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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:to="label_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_2" xlink:title="label: IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets to label_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets"/>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="IncreaseDecreaseInAccountsPayable" xlink:title="IncreaseDecreaseInAccountsPayable"/>
    <label xlink:type="resource" xlink:label="label_IncreaseDecreaseInAccountsPayable_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncreaseDecreaseInAccountsPayable" xml:lang="en-US" id="label_IncreaseDecreaseInAccountsPayable_2">Increase (Decrease) in Accounts Payable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInAccountsPayable" xlink:to="label_IncreaseDecreaseInAccountsPayable_2" xlink:title="label: IncreaseDecreaseInAccountsPayable to label_IncreaseDecreaseInAccountsPayable"/>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:label="CommitmentsAndContingenciesDisclosureTextBlock" xlink:title="CommitmentsAndContingenciesDisclosureTextBlock"/>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockSharesAuthorized" xlink:to="label_CommonStockSharesAuthorized_3" xlink:title="label: CommonStockSharesAuthorized to label_CommonStockSharesAuthorized"/>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockSharesIssued" xlink:to="label_CommonStockSharesIssued_2" xlink:title="label: CommonStockSharesIssued to label_CommonStockSharesIssued"/>
    <label xlink:type="resource" xlink:label="label_CommonStockSharesIssued" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CommonStockSharesIssued" xml:lang="en-US" id="label_CommonStockSharesIssued">Common stock, shares issued</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockSharesIssued" xlink:to="label_CommonStockSharesIssued" xlink:title="label: CommonStockSharesIssued to label_CommonStockSharesIssued"/>
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    <label xlink:type="resource" xlink:label="label_CommonStockSharesOutstanding_4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CommonStockSharesOutstanding" xml:lang="en-US" id="label_CommonStockSharesOutstanding_4">Common Stock, Shares, Outstanding</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockSharesOutstanding" xlink:to="label_CommonStockSharesOutstanding_4" xlink:title="label: CommonStockSharesOutstanding to label_CommonStockSharesOutstanding"/>
    <label xlink:type="resource" xlink:label="label_CommonStockSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CommonStockSharesOutstanding" xml:lang="en-US" id="label_CommonStockSharesOutstanding">Common stock, shares outstanding</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockSharesOutstanding" xlink:to="label_CommonStockSharesOutstanding" xlink:title="label: CommonStockSharesOutstanding to label_CommonStockSharesOutstanding"/>
    <label xlink:type="resource" xlink:label="label_CommonStockSharesOutstanding_3" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:title="label_CommonStockSharesOutstanding" xml:lang="en-US" id="label_CommonStockSharesOutstanding_3">Balance (in shares)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockSharesOutstanding" xlink:to="label_CommonStockSharesOutstanding_3" xlink:title="label: CommonStockSharesOutstanding to label_CommonStockSharesOutstanding"/>
    <label xlink:type="resource" xlink:label="label_CommonStockSharesOutstanding_2" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:title="label_CommonStockSharesOutstanding" xml:lang="en-US" id="label_CommonStockSharesOutstanding_2">Balance (in shares)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockSharesOutstanding" xlink:to="label_CommonStockSharesOutstanding_2" xlink:title="label: CommonStockSharesOutstanding to label_CommonStockSharesOutstanding"/>
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    <label xlink:type="resource" xlink:label="label_CommonStockValue_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CommonStockValue" xml:lang="en-US" id="label_CommonStockValue">Common Stock, Value, Issued</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockValue" xlink:to="label_CommonStockValue_2" xlink:title="label: CommonStockValue to label_CommonStockValue"/>
    <label xlink:type="resource" xlink:label="label_CommonStockValue" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_CommonStockValue" xml:lang="en-US" id="label_CommonStockValue_2">Common stock, $0.01 par value; 300,000,000 shares authorized at March 31, 2011 and December 31, 2010; 205,458,006 and 203,522,976 shares issued and outstanding at March 31, 2011 and December 31, 2010, respectively</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockValue" xlink:to="label_CommonStockValue" xlink:title="label: CommonStockValue to label_CommonStockValue"/>
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    <label xlink:type="resource" xlink:label="label_ConvertibleSubordinatedDebtCurrent_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ConvertibleSubordinatedDebtCurrent" xml:lang="en-US" id="label_ConvertibleSubordinatedDebtCurrent_2">Convertible senior subordinated notes (due 2013), current portion</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DirectOperatingCostRoyaltyExpense" xlink:to="label_DirectOperatingCostRoyaltyExpense_2" xlink:title="label: DirectOperatingCostRoyaltyExpense to label_DirectOperatingCostRoyaltyExpense"/>
    <label xlink:type="resource" xlink:label="label_DirectOperatingCostRoyaltyExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DirectOperatingCostRoyaltyExpense" xml:lang="en-US" id="label_DirectOperatingCostRoyaltyExpense">Royalty expenses</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DirectOperatingCostRoyaltyExpense" xlink:to="label_DirectOperatingCostRoyaltyExpense" xlink:title="label: DirectOperatingCostRoyaltyExpense to label_DirectOperatingCostRoyaltyExpense"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_CostsAssociatedWithExitOrDisposalActivitiesOrRestructuringsPolicyTextBlock" xlink:label="CostsAssociatedWithExitOrDisposalActivitiesOrRestructuringsPolicyTextBlock" xlink:title="CostsAssociatedWithExitOrDisposalActivitiesOrRestructuringsPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_CostsAssociatedWithExitOrDisposalActivitiesOrRestructuringsPolicyTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CostsAssociatedWithExitOrDisposalActivitiesOrRestructuringsPolicyTextBlock" xml:lang="en-US" id="label_CostsAssociatedWithExitOrDisposalActivitiesOrRestructuringsPolicyTextBlock_2">Costs Associated with Exit or Disposal Activities or Restructurings, Policy [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CostsAssociatedWithExitOrDisposalActivitiesOrRestructuringsPolicyTextBlock" xlink:to="label_CostsAssociatedWithExitOrDisposalActivitiesOrRestructuringsPolicyTextBlock_2" xlink:title="label: CostsAssociatedWithExitOrDisposalActivitiesOrRestructuringsPolicyTextBlock to label_CostsAssociatedWithExitOrDisposalActivitiesOrRestructuringsPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_CostsAssociatedWithExitOrDisposalActivitiesOrRestructuringsPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CostsAssociatedWithExitOrDisposalActivitiesOrRestructuringsPolicyTextBlock" xml:lang="en-US" id="label_CostsAssociatedWithExitOrDisposalActivitiesOrRestructuringsPolicyTextBlock">Restructuring Expense</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CostsAssociatedWithExitOrDisposalActivitiesOrRestructuringsPolicyTextBlock" xlink:to="label_CostsAssociatedWithExitOrDisposalActivitiesOrRestructuringsPolicyTextBlock" xlink:title="label: CostsAssociatedWithExitOrDisposalActivitiesOrRestructuringsPolicyTextBlock to label_CostsAssociatedWithExitOrDisposalActivitiesOrRestructuringsPolicyTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax" xlink:label="AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax" xlink:title="AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax"/>
    <label xlink:type="resource" xlink:label="label_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax" xml:lang="en-US" id="label_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_2">Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax" xlink:to="label_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_2" xlink:title="label: AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax to label_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax"/>
    <label xlink:type="resource" xlink:label="label_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax" xml:lang="en-US" id="label_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax">Net unrealized gain (loss) related to foreign currency translation included in accumulated other comprehensive income (loss)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax" xlink:to="label_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax" xlink:title="label: AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax to label_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="LiabilitiesCurrent" xlink:title="LiabilitiesCurrent"/>
    <label xlink:type="resource" xlink:label="label_LiabilitiesCurrent_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LiabilitiesCurrent" xml:lang="en-US" id="label_LiabilitiesCurrent_2">Liabilities, Current</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesCurrent" xlink:to="label_LiabilitiesCurrent_2" xlink:title="label: LiabilitiesCurrent to label_LiabilitiesCurrent"/>
    <label xlink:type="resource" xlink:label="label_LiabilitiesCurrent" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_LiabilitiesCurrent" xml:lang="en-US" id="label_LiabilitiesCurrent">Total current liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesCurrent" xlink:to="label_LiabilitiesCurrent" xlink:title="label: LiabilitiesCurrent to label_LiabilitiesCurrent"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DebtConversionOriginalDebtAmount" xlink:label="DebtConversionOriginalDebtAmount" xlink:title="DebtConversionOriginalDebtAmount"/>
    <label xlink:type="resource" xlink:label="label_DebtConversionOriginalDebtAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtConversionOriginalDebtAmount" xml:lang="en-US" id="label_DebtConversionOriginalDebtAmount">Debt Conversion, Original Debt, Amount</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtConversionOriginalDebtAmount" xlink:to="label_DebtConversionOriginalDebtAmount" xlink:title="label: DebtConversionOriginalDebtAmount to label_DebtConversionOriginalDebtAmount"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DebtDisclosureTextBlock" xlink:label="DebtDisclosureTextBlock" xlink:title="DebtDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_DebtDisclosureTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtDisclosureTextBlock" xml:lang="en-US" id="label_DebtDisclosureTextBlock">Debt Disclosure [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtDisclosureTextBlock" xlink:to="label_DebtDisclosureTextBlock_2" xlink:title="label: DebtDisclosureTextBlock to label_DebtDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_DebtDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtDisclosureTextBlock" xml:lang="en-US" id="label_DebtDisclosureTextBlock_2">Convertible Senior Subordinated Notes due 2015</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtDisclosureTextBlock" xlink:to="label_DebtDisclosureTextBlock" xlink:title="label: DebtDisclosureTextBlock to label_DebtDisclosureTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DebtInstrumentConvertibleConversionRatio" xlink:label="DebtInstrumentConvertibleConversionRatio" xlink:title="DebtInstrumentConvertibleConversionRatio"/>
    <label xlink:type="resource" xlink:label="label_DebtInstrumentConvertibleConversionRatio_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentConvertibleConversionRatio" xml:lang="en-US" id="label_DebtInstrumentConvertibleConversionRatio_2">Debt Instrument, Convertible, Conversion Ratio</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentConvertibleConversionRatio" xlink:to="label_DebtInstrumentConvertibleConversionRatio_2" xlink:title="label: DebtInstrumentConvertibleConversionRatio to label_DebtInstrumentConvertibleConversionRatio"/>
    <label xlink:type="resource" xlink:label="label_DebtInstrumentConvertibleConversionRatio" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentConvertibleConversionRatio" xml:lang="en-US" id="label_DebtInstrumentConvertibleConversionRatio">Original conversion rate, number of shares to be issued per $1000 of principal (in shares)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentConvertibleConversionRatio" xlink:to="label_DebtInstrumentConvertibleConversionRatio" xlink:title="label: DebtInstrumentConvertibleConversionRatio to label_DebtInstrumentConvertibleConversionRatio"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="DebtInstrumentFaceAmount" xlink:title="DebtInstrumentFaceAmount"/>
    <label xlink:type="resource" xlink:label="label_DebtInstrumentFaceAmount_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentFaceAmount" xml:lang="en-US" id="label_DebtInstrumentFaceAmount_2">Debt Instrument, Face Amount</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentFaceAmount" xlink:to="label_DebtInstrumentFaceAmount_2" xlink:title="label: DebtInstrumentFaceAmount to label_DebtInstrumentFaceAmount"/>
    <label xlink:type="resource" xlink:label="label_DebtInstrumentFaceAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentFaceAmount" xml:lang="en-US" id="label_DebtInstrumentFaceAmount">Face amount of 2012 Notes</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentFaceAmount" xlink:to="label_DebtInstrumentFaceAmount" xlink:title="label: DebtInstrumentFaceAmount to label_DebtInstrumentFaceAmount"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DebtInstrumentFairValue" xlink:label="DebtInstrumentFairValue" xlink:title="DebtInstrumentFairValue"/>
    <label xlink:type="resource" xlink:label="label_DebtInstrumentFairValue_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentFairValue" xml:lang="en-US" id="label_DebtInstrumentFairValue_2">Debt Instrument, Fair Value</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentFairValue" xlink:to="label_DebtInstrumentFairValue_2" xlink:title="label: DebtInstrumentFairValue to label_DebtInstrumentFairValue"/>
    <label xlink:type="resource" xlink:label="label_DebtInstrumentFairValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentFairValue" xml:lang="en-US" id="label_DebtInstrumentFairValue">Fair value of convertible senior subordinated notes</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentFairValue" xlink:to="label_DebtInstrumentFairValue" xlink:title="label: DebtInstrumentFairValue to label_DebtInstrumentFairValue"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PaymentsOfDebtIssuanceCosts" xlink:label="PaymentsOfDebtIssuanceCosts" xlink:title="PaymentsOfDebtIssuanceCosts"/>
    <label xlink:type="resource" xlink:label="label_PaymentsOfDebtIssuanceCosts_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PaymentsOfDebtIssuanceCosts" xml:lang="en-US" id="label_PaymentsOfDebtIssuanceCosts_2">Payments of Debt Issuance Costs</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsOfDebtIssuanceCosts" xlink:to="label_PaymentsOfDebtIssuanceCosts_2" xlink:title="label: PaymentsOfDebtIssuanceCosts to label_PaymentsOfDebtIssuanceCosts"/>
    <label xlink:type="resource" xlink:label="label_PaymentsOfDebtIssuanceCosts" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PaymentsOfDebtIssuanceCosts" xml:lang="en-US" id="label_PaymentsOfDebtIssuanceCosts">Underwriting discount</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsOfDebtIssuanceCosts" xlink:to="label_PaymentsOfDebtIssuanceCosts" xlink:title="label: PaymentsOfDebtIssuanceCosts to label_PaymentsOfDebtIssuanceCosts"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PaymentsOfDebtRestructuringCosts" xlink:label="PaymentsOfDebtRestructuringCosts" xlink:title="PaymentsOfDebtRestructuringCosts"/>
    <label xlink:type="resource" xlink:label="label_PaymentsOfDebtRestructuringCosts_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PaymentsOfDebtRestructuringCosts" xml:lang="en-US" id="label_PaymentsOfDebtRestructuringCosts">Payments of Debt Restructuring Costs</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsOfDebtRestructuringCosts" xlink:to="label_PaymentsOfDebtRestructuringCosts_2" xlink:title="label: PaymentsOfDebtRestructuringCosts to label_PaymentsOfDebtRestructuringCosts"/>
    <label xlink:type="resource" xlink:label="label_PaymentsOfDebtRestructuringCosts" xlink:role="http://xbrl.us/us-gaap/role/label/negated" xlink:title="label_PaymentsOfDebtRestructuringCosts" xml:lang="en-US" id="label_PaymentsOfDebtRestructuringCosts_2">Debt conversion costs</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsOfDebtRestructuringCosts" xlink:to="label_PaymentsOfDebtRestructuringCosts" xlink:title="label: PaymentsOfDebtRestructuringCosts to label_PaymentsOfDebtRestructuringCosts"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredTaxAssetsDeferredIncome" xlink:label="DeferredTaxAssetsDeferredIncome" xlink:title="DeferredTaxAssetsDeferredIncome"/>
    <label xlink:type="resource" xlink:label="label_DeferredTaxAssetsDeferredIncome_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DeferredTaxAssetsDeferredIncome" xml:lang="en-US" id="label_DeferredTaxAssetsDeferredIncome_2">Deferred Tax Assets, Deferred Income</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredTaxAssetsDeferredIncome" xlink:to="label_DeferredTaxAssetsDeferredIncome_2" xlink:title="label: DeferredTaxAssetsDeferredIncome to label_DeferredTaxAssetsDeferredIncome"/>
    <label xlink:type="resource" xlink:label="label_DeferredTaxAssetsDeferredIncome" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DeferredTaxAssetsDeferredIncome" xml:lang="en-US" id="label_DeferredTaxAssetsDeferredIncome">Deferred revenues</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredTaxAssetsDeferredIncome" xlink:to="label_DeferredTaxAssetsDeferredIncome" xlink:title="label: DeferredTaxAssetsDeferredIncome to label_DeferredTaxAssetsDeferredIncome"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredTaxAssetsGross" xlink:label="DeferredTaxAssetsGross" xlink:title="DeferredTaxAssetsGross"/>
    <label xlink:type="resource" xlink:label="label_DeferredTaxAssetsGross_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DeferredTaxAssetsGross" xml:lang="en-US" id="label_DeferredTaxAssetsGross_2">Deferred Tax Assets, Gross</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredTaxAssetsGross" xlink:to="label_DeferredTaxAssetsGross_2" xlink:title="label: DeferredTaxAssetsGross to label_DeferredTaxAssetsGross"/>
    <label xlink:type="resource" xlink:label="label_DeferredTaxAssetsGross" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_DeferredTaxAssetsGross" xml:lang="en-US" id="label_DeferredTaxAssetsGross">Gross deferred tax assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredTaxAssetsGross" xlink:to="label_DeferredTaxAssetsGross" xlink:title="label: DeferredTaxAssetsGross to label_DeferredTaxAssetsGross"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredTaxAssetsInventory" xlink:label="DeferredTaxAssetsInventory" xlink:title="DeferredTaxAssetsInventory"/>
    <label xlink:type="resource" xlink:label="label_DeferredTaxAssetsInventory_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DeferredTaxAssetsInventory" xml:lang="en-US" id="label_DeferredTaxAssetsInventory_2">Deferred Tax Assets, Inventory</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredTaxAssetsInventory" xlink:to="label_DeferredTaxAssetsInventory_2" xlink:title="label: DeferredTaxAssetsInventory to label_DeferredTaxAssetsInventory"/>
    <label xlink:type="resource" xlink:label="label_DeferredTaxAssetsInventory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DeferredTaxAssetsInventory" xml:lang="en-US" id="label_DeferredTaxAssetsInventory">Inventory</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredTaxAssetsInventory" xlink:to="label_DeferredTaxAssetsInventory" xlink:title="label: DeferredTaxAssetsInventory to label_DeferredTaxAssetsInventory"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredTaxAssetsNet" xlink:label="DeferredTaxAssetsNet" xlink:title="DeferredTaxAssetsNet"/>
    <label xlink:type="resource" xlink:label="label_DeferredTaxAssetsNet_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DeferredTaxAssetsNet" xml:lang="en-US" id="label_DeferredTaxAssetsNet_2">Deferred Tax Assets, Net</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredTaxAssetsNet" xlink:to="label_DeferredTaxAssetsNet_2" xlink:title="label: DeferredTaxAssetsNet to label_DeferredTaxAssetsNet"/>
    <label xlink:type="resource" xlink:label="label_DeferredTaxAssetsNet" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_DeferredTaxAssetsNet" xml:lang="en-US" id="label_DeferredTaxAssetsNet">Total deferred tax assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredTaxAssetsNet" xlink:to="label_DeferredTaxAssetsNet" xlink:title="label: DeferredTaxAssetsNet to label_DeferredTaxAssetsNet"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" xlink:label="DeferredTaxAssetsOperatingLossCarryforwards" xlink:title="DeferredTaxAssetsOperatingLossCarryforwards"/>
    <label xlink:type="resource" xlink:label="label_DeferredTaxAssetsOperatingLossCarryforwards_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DeferredTaxAssetsOperatingLossCarryforwards" xml:lang="en-US" id="label_DeferredTaxAssetsOperatingLossCarryforwards_2">Deferred Tax Assets, Operating Loss Carryforwards</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredTaxAssetsOperatingLossCarryforwards" xlink:to="label_DeferredTaxAssetsOperatingLossCarryforwards_2" xlink:title="label: DeferredTaxAssetsOperatingLossCarryforwards to label_DeferredTaxAssetsOperatingLossCarryforwards"/>
    <label xlink:type="resource" xlink:label="label_DeferredTaxAssetsOperatingLossCarryforwards" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DeferredTaxAssetsOperatingLossCarryforwards" xml:lang="en-US" id="label_DeferredTaxAssetsOperatingLossCarryforwards">Net operating loss</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredTaxAssetsOperatingLossCarryforwards" xlink:to="label_DeferredTaxAssetsOperatingLossCarryforwards" xlink:title="label: DeferredTaxAssetsOperatingLossCarryforwards to label_DeferredTaxAssetsOperatingLossCarryforwards"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredTaxAssetsTaxCreditCarryforwards" xlink:label="DeferredTaxAssetsTaxCreditCarryforwards" xlink:title="DeferredTaxAssetsTaxCreditCarryforwards"/>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OtherIndefiniteLivedIntangibleAssets" xlink:label="OtherIndefiniteLivedIntangibleAssets" xlink:title="OtherIndefiniteLivedIntangibleAssets"/>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_InterestExpense" xlink:label="InterestExpense" xlink:title="InterestExpense"/>
    <label xlink:type="resource" xlink:label="label_InterestExpense_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InterestExpense" xml:lang="en-US" id="label_InterestExpense">Interest Expense</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InterestExpense" xlink:to="label_InterestExpense_2" xlink:title="label: InterestExpense to label_InterestExpense"/>
    <label xlink:type="resource" xlink:label="label_InterestExpense" xlink:role="http://xbrl.us/us-gaap/role/label/negated" xlink:title="label_InterestExpense" xml:lang="en-US" id="label_InterestExpense_2">Interest expense</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_InvestmentPolicyTextBlock" xlink:label="InvestmentPolicyTextBlock" xlink:title="InvestmentPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_InvestmentPolicyTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InvestmentPolicyTextBlock" xml:lang="en-US" id="label_InvestmentPolicyTextBlock_2">Investment, Policy [Text Block]</label>
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    <label xlink:type="resource" xlink:label="label_InvestmentPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_InvestmentPolicyTextBlock" xml:lang="en-US" id="label_InvestmentPolicyTextBlock">Marketable Securities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InvestmentPolicyTextBlock" xlink:to="label_InvestmentPolicyTextBlock" xlink:title="label: InvestmentPolicyTextBlock to label_InvestmentPolicyTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_IssuanceOfDebtMember" xlink:label="IssuanceOfDebtMember" xlink:title="IssuanceOfDebtMember"/>
    <label xlink:type="resource" xlink:label="label_IssuanceOfDebtMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IssuanceOfDebtMember" xml:lang="en-US" id="label_IssuanceOfDebtMember">Credit agreement with Bank of America</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IssuanceOfDebtMember" xlink:to="label_IssuanceOfDebtMember" xlink:title="label: IssuanceOfDebtMember to label_IssuanceOfDebtMember"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_LeaseAndRentalExpense" xlink:label="LeaseAndRentalExpense" xlink:title="LeaseAndRentalExpense"/>
    <label xlink:type="resource" xlink:label="label_LeaseAndRentalExpense_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LeaseAndRentalExpense" xml:lang="en-US" id="label_LeaseAndRentalExpense_2">Operating Leases, Rent Expense</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeaseAndRentalExpense" xlink:to="label_LeaseAndRentalExpense_2" xlink:title="label: LeaseAndRentalExpense to label_LeaseAndRentalExpense"/>
    <label xlink:type="resource" xlink:label="label_LeaseAndRentalExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LeaseAndRentalExpense" xml:lang="en-US" id="label_LeaseAndRentalExpense">Rental expense</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_LeaseholdImprovementsGross" xlink:label="LeaseholdImprovementsGross" xlink:title="LeaseholdImprovementsGross"/>
    <label xlink:type="resource" xlink:label="label_LeaseholdImprovementsGross_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LeaseholdImprovementsGross" xml:lang="en-US" id="label_LeaseholdImprovementsGross_2">Leasehold Improvements, Gross</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeaseholdImprovementsGross" xlink:to="label_LeaseholdImprovementsGross_2" xlink:title="label: LeaseholdImprovementsGross to label_LeaseholdImprovementsGross"/>
    <label xlink:type="resource" xlink:label="label_LeaseholdImprovementsGross" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LeaseholdImprovementsGross" xml:lang="en-US" id="label_LeaseholdImprovementsGross">Leasehold improvements</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeaseholdImprovementsGross" xlink:to="label_LeaseholdImprovementsGross" xlink:title="label: LeaseholdImprovementsGross to label_LeaseholdImprovementsGross"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_Liabilities" xlink:label="Liabilities" xlink:title="Liabilities"/>
    <label xlink:type="resource" xlink:label="label_Liabilities_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_Liabilities" xml:lang="en-US" id="label_Liabilities_2">Liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Liabilities" xlink:to="label_Liabilities_2" xlink:title="label: Liabilities to label_Liabilities"/>
    <label xlink:type="resource" xlink:label="label_Liabilities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_Liabilities" xml:lang="en-US" id="label_Liabilities">Total liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Liabilities" xlink:to="label_Liabilities" xlink:title="label: Liabilities to label_Liabilities"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="LiabilitiesAndStockholdersEquity" xlink:title="LiabilitiesAndStockholdersEquity"/>
    <label xlink:type="resource" xlink:label="label_LiabilitiesAndStockholdersEquity_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LiabilitiesAndStockholdersEquity" xml:lang="en-US" id="label_LiabilitiesAndStockholdersEquity_2">Liabilities and Stockholders' Equity</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesAndStockholdersEquity" xlink:to="label_LiabilitiesAndStockholdersEquity_2" xlink:title="label: LiabilitiesAndStockholdersEquity to label_LiabilitiesAndStockholdersEquity"/>
    <label xlink:type="resource" xlink:label="label_LiabilitiesAndStockholdersEquity" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_LiabilitiesAndStockholdersEquity" xml:lang="en-US" id="label_LiabilitiesAndStockholdersEquity">Total liabilities and stockholders' equity</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesAndStockholdersEquity" xlink:to="label_LiabilitiesAndStockholdersEquity" xlink:title="label: LiabilitiesAndStockholdersEquity to label_LiabilitiesAndStockholdersEquity"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AvailableForSaleSecuritiesNoncurrent" xlink:label="AvailableForSaleSecuritiesNoncurrent" xlink:title="AvailableForSaleSecuritiesNoncurrent"/>
    <label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesNoncurrent_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AvailableForSaleSecuritiesNoncurrent" xml:lang="en-US" id="label_AvailableForSaleSecuritiesNoncurrent">Available-for-sale Securities, Noncurrent</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecuritiesNoncurrent" xlink:to="label_AvailableForSaleSecuritiesNoncurrent_2" xlink:title="label: AvailableForSaleSecuritiesNoncurrent to label_AvailableForSaleSecuritiesNoncurrent"/>
    <label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesNoncurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AvailableForSaleSecuritiesNoncurrent" xml:lang="en-US" id="label_AvailableForSaleSecuritiesNoncurrent_2">Marketable securities, available for sale, excluding current portion</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecuritiesNoncurrent" xlink:to="label_AvailableForSaleSecuritiesNoncurrent" xlink:title="label: AvailableForSaleSecuritiesNoncurrent to label_AvailableForSaleSecuritiesNoncurrent"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AvailableForSaleSecuritiesCurrent" xlink:label="AvailableForSaleSecuritiesCurrent" xlink:title="AvailableForSaleSecuritiesCurrent"/>
    <label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesCurrent_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AvailableForSaleSecuritiesCurrent" xml:lang="en-US" id="label_AvailableForSaleSecuritiesCurrent_2">Available-for-sale Securities, Current</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecuritiesCurrent" xlink:to="label_AvailableForSaleSecuritiesCurrent_2" xlink:title="label: AvailableForSaleSecuritiesCurrent to label_AvailableForSaleSecuritiesCurrent"/>
    <label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesCurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AvailableForSaleSecuritiesCurrent" xml:lang="en-US" id="label_AvailableForSaleSecuritiesCurrent">Marketable securities, available for sale</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecuritiesCurrent" xlink:to="label_AvailableForSaleSecuritiesCurrent" xlink:title="label: AvailableForSaleSecuritiesCurrent to label_AvailableForSaleSecuritiesCurrent"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_MoneyMarketFundsAtCarryingValue" xlink:label="MoneyMarketFundsAtCarryingValue" xlink:title="MoneyMarketFundsAtCarryingValue"/>
    <label xlink:type="resource" xlink:label="label_MoneyMarketFundsAtCarryingValue_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MoneyMarketFundsAtCarryingValue" xml:lang="en-US" id="label_MoneyMarketFundsAtCarryingValue_2">Money Market Funds, at Carrying Value</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MoneyMarketFundsAtCarryingValue" xlink:to="label_MoneyMarketFundsAtCarryingValue_2" xlink:title="label: MoneyMarketFundsAtCarryingValue to label_MoneyMarketFundsAtCarryingValue"/>
    <label xlink:type="resource" xlink:label="label_MoneyMarketFundsAtCarryingValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_MoneyMarketFundsAtCarryingValue" xml:lang="en-US" id="label_MoneyMarketFundsAtCarryingValue">Money market funds</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MoneyMarketFundsAtCarryingValue" xlink:to="label_MoneyMarketFundsAtCarryingValue" xlink:title="label: MoneyMarketFundsAtCarryingValue to label_MoneyMarketFundsAtCarryingValue"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="NetCashProvidedByUsedInFinancingActivities" xlink:title="NetCashProvidedByUsedInFinancingActivities"/>
    <label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInFinancingActivities_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NetCashProvidedByUsedInFinancingActivities" xml:lang="en-US" id="label_NetCashProvidedByUsedInFinancingActivities_2">Net Cash Provided by (Used in) Financing Activities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInFinancingActivities" xlink:to="label_NetCashProvidedByUsedInFinancingActivities_2" xlink:title="label: NetCashProvidedByUsedInFinancingActivities to label_NetCashProvidedByUsedInFinancingActivities"/>
    <label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_NetCashProvidedByUsedInFinancingActivities" xml:lang="en-US" id="label_NetCashProvidedByUsedInFinancingActivities">Net cash (used in) provided by financing activities</label>
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    <label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInInvestingActivities_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NetCashProvidedByUsedInInvestingActivities" xml:lang="en-US" id="label_NetCashProvidedByUsedInInvestingActivities_2">Net Cash Provided by (Used in) Investing Activities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInInvestingActivities" xlink:to="label_NetCashProvidedByUsedInInvestingActivities_2" xlink:title="label: NetCashProvidedByUsedInInvestingActivities to label_NetCashProvidedByUsedInInvestingActivities"/>
    <label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_NetCashProvidedByUsedInInvestingActivities" xml:lang="en-US" id="label_NetCashProvidedByUsedInInvestingActivities">Net cash provided by investing activities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInInvestingActivities" xlink:to="label_NetCashProvidedByUsedInInvestingActivities" xlink:title="label: NetCashProvidedByUsedInInvestingActivities to label_NetCashProvidedByUsedInInvestingActivities"/>
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    <label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInOperatingActivities_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NetCashProvidedByUsedInOperatingActivities" xml:lang="en-US" id="label_NetCashProvidedByUsedInOperatingActivities_2">Net Cash Provided by (Used in) Operating Activities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInOperatingActivities" xlink:to="label_NetCashProvidedByUsedInOperatingActivities_2" xlink:title="label: NetCashProvidedByUsedInOperatingActivities to label_NetCashProvidedByUsedInOperatingActivities"/>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:title="NetCashProvidedByUsedInOperatingActivitiesAbstract"/>
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    <label xlink:type="resource" xlink:label="label_OtherNoncashExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OtherNoncashExpense" xml:lang="en-US" id="label_OtherNoncashExpense">Other non-cash based compensation expense</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:label="OperatingLeasesFutureMinimumPaymentsDue" xlink:title="OperatingLeasesFutureMinimumPaymentsDue"/>
    <label xlink:type="resource" xlink:label="label_OperatingLeasesFutureMinimumPaymentsDue_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLeasesFutureMinimumPaymentsDue" xml:lang="en-US" id="label_OperatingLeasesFutureMinimumPaymentsDue_2">Operating Leases, Future Minimum Payments Due</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeasesFutureMinimumPaymentsDue" xlink:to="label_OperatingLeasesFutureMinimumPaymentsDue_2" xlink:title="label: OperatingLeasesFutureMinimumPaymentsDue to label_OperatingLeasesFutureMinimumPaymentsDue"/>
    <label xlink:type="resource" xlink:label="label_OperatingLeasesFutureMinimumPaymentsDue" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_OperatingLeasesFutureMinimumPaymentsDue" xml:lang="en-US" id="label_OperatingLeasesFutureMinimumPaymentsDue">Total minimum lease payments</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeasesFutureMinimumPaymentsDue" xlink:to="label_OperatingLeasesFutureMinimumPaymentsDue" xlink:title="label: OperatingLeasesFutureMinimumPaymentsDue to label_OperatingLeasesFutureMinimumPaymentsDue"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" xlink:label="OperatingLeasesFutureMinimumPaymentsDueCurrent" xlink:title="OperatingLeasesFutureMinimumPaymentsDueCurrent"/>
    <label xlink:type="resource" xlink:label="label_OperatingLeasesFutureMinimumPaymentsDueCurrent_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLeasesFutureMinimumPaymentsDueCurrent" xml:lang="en-US" id="label_OperatingLeasesFutureMinimumPaymentsDueCurrent_2">Operating Leases, Future Minimum Payments Due, Current</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeasesFutureMinimumPaymentsDueCurrent" xlink:to="label_OperatingLeasesFutureMinimumPaymentsDueCurrent_2" xlink:title="label: OperatingLeasesFutureMinimumPaymentsDueCurrent to label_OperatingLeasesFutureMinimumPaymentsDueCurrent"/>
    <label xlink:type="resource" xlink:label="label_OperatingLeasesFutureMinimumPaymentsDueCurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OperatingLeasesFutureMinimumPaymentsDueCurrent" xml:lang="en-US" id="label_OperatingLeasesFutureMinimumPaymentsDueCurrent">2011</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" xlink:label="OperatingLeasesFutureMinimumPaymentsDueInFiveYears" xlink:title="OperatingLeasesFutureMinimumPaymentsDueInFiveYears"/>
    <label xlink:type="resource" xlink:label="label_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" xml:lang="en-US" id="label_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_2">Operating Leases, Future Minimum Payments, Due in Five Years</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeasesFutureMinimumPaymentsDueInFiveYears" xlink:to="label_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_2" xlink:title="label: OperatingLeasesFutureMinimumPaymentsDueInFiveYears to label_OperatingLeasesFutureMinimumPaymentsDueInFiveYears"/>
    <label xlink:type="resource" xlink:label="label_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" xml:lang="en-US" id="label_OperatingLeasesFutureMinimumPaymentsDueInFiveYears">2015</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xlink:label="OperatingLeasesFutureMinimumPaymentsDueInFourYears" xlink:title="OperatingLeasesFutureMinimumPaymentsDueInFourYears"/>
    <label xlink:type="resource" xlink:label="label_OperatingLeasesFutureMinimumPaymentsDueInFourYears_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xml:lang="en-US" id="label_OperatingLeasesFutureMinimumPaymentsDueInFourYears_2">Operating Leases, Future Minimum Payments, Due in Four Years</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeasesFutureMinimumPaymentsDueInFourYears" xlink:to="label_OperatingLeasesFutureMinimumPaymentsDueInFourYears_2" xlink:title="label: OperatingLeasesFutureMinimumPaymentsDueInFourYears to label_OperatingLeasesFutureMinimumPaymentsDueInFourYears"/>
    <label xlink:type="resource" xlink:label="label_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xml:lang="en-US" id="label_OperatingLeasesFutureMinimumPaymentsDueInFourYears">2014</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:label="OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:title="OperatingLeasesFutureMinimumPaymentsDueInThreeYears"/>
    <label xlink:type="resource" xlink:label="label_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xml:lang="en-US" id="label_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_2">Operating Leases, Future Minimum Payments, Due in Three Years</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:to="label_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_2" xlink:title="label: OperatingLeasesFutureMinimumPaymentsDueInThreeYears to label_OperatingLeasesFutureMinimumPaymentsDueInThreeYears"/>
    <label xlink:type="resource" xlink:label="label_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xml:lang="en-US" id="label_OperatingLeasesFutureMinimumPaymentsDueInThreeYears">2013</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:label="OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:title="OperatingLeasesFutureMinimumPaymentsDueInTwoYears"/>
    <label xlink:type="resource" xlink:label="label_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xml:lang="en-US" id="label_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_2">Operating Leases, Future Minimum Payments, Due in Two Years</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:to="label_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_2" xlink:title="label: OperatingLeasesFutureMinimumPaymentsDueInTwoYears to label_OperatingLeasesFutureMinimumPaymentsDueInTwoYears"/>
    <label xlink:type="resource" xlink:label="label_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xml:lang="en-US" id="label_OperatingLeasesFutureMinimumPaymentsDueInTwoYears">2012</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" xlink:label="OperatingLeasesFutureMinimumPaymentsDueThereafter" xlink:title="OperatingLeasesFutureMinimumPaymentsDueThereafter"/>
    <label xlink:type="resource" xlink:label="label_OperatingLeasesFutureMinimumPaymentsDueThereafter_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLeasesFutureMinimumPaymentsDueThereafter" xml:lang="en-US" id="label_OperatingLeasesFutureMinimumPaymentsDueThereafter_2">Operating Leases, Future Minimum Payments, Due Thereafter</label>
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    <label xlink:type="resource" xlink:label="label_OperatingLeasesFutureMinimumPaymentsDueThereafter" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OperatingLeasesFutureMinimumPaymentsDueThereafter" xml:lang="en-US" id="label_OperatingLeasesFutureMinimumPaymentsDueThereafter">Thereafter</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OperatingLossCarryforwards" xlink:label="OperatingLossCarryforwards" xlink:title="OperatingLossCarryforwards"/>
    <label xlink:type="resource" xlink:label="label_OperatingLossCarryforwards" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OperatingLossCarryforwards" xml:lang="en-US" id="label_OperatingLossCarryforwards">Operating Loss</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLossCarryforwards" xlink:to="label_OperatingLossCarryforwards" xlink:title="label: OperatingLossCarryforwards to label_OperatingLossCarryforwards"/>
    <label xlink:type="resource" xlink:label="label_OperatingLossCarryforwards_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLossCarryforwards" xml:lang="en-US" id="label_OperatingLossCarryforwards_2">Operating Loss Carryforwards</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="OperatingIncomeLoss" xlink:title="OperatingIncomeLoss"/>
    <label xlink:type="resource" xlink:label="label_OperatingIncomeLoss_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingIncomeLoss" xml:lang="en-US" id="label_OperatingIncomeLoss_2">Operating Income (Loss)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingIncomeLoss" xlink:to="label_OperatingIncomeLoss_2" xlink:title="label: OperatingIncomeLoss to label_OperatingIncomeLoss"/>
    <label xlink:type="resource" xlink:label="label_OperatingIncomeLoss" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_OperatingIncomeLoss" xml:lang="en-US" id="label_OperatingIncomeLoss">Loss from operations</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_Revenues" xlink:label="Revenues" xlink:title="Revenues"/>
    <label xlink:type="resource" xlink:label="label_Revenues_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_Revenues" xml:lang="en-US" id="label_Revenues_2">Revenues</label>
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    <label xlink:type="resource" xlink:label="label_Revenues" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_Revenues" xml:lang="en-US" id="label_Revenues">Total revenues</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:label="OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:title="OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease"/>
    <label xlink:type="resource" xlink:label="label_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease" xml:lang="en-US" id="label_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease">Foreign currency translation adjustment</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:label="OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:title="OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax"/>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities" xlink:label="PaymentsForProceedsFromOtherInvestingActivities" xlink:title="PaymentsForProceedsFromOtherInvestingActivities"/>
    <label xlink:type="resource" xlink:label="label_PaymentsForProceedsFromOtherInvestingActivities_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PaymentsForProceedsFromOtherInvestingActivities" xml:lang="en-US" id="label_PaymentsForProceedsFromOtherInvestingActivities_2">Payments for (Proceeds from) Other Investing Activities</label>
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    <label xlink:type="resource" xlink:label="label_PreferredStockSharesOutstanding_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PreferredStockSharesOutstanding" xml:lang="en-US" id="label_PreferredStockSharesOutstanding_2">Preferred Stock, Shares Outstanding</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PreferredStockSharesOutstanding" xlink:to="label_PreferredStockSharesOutstanding_2" xlink:title="label: PreferredStockSharesOutstanding to label_PreferredStockSharesOutstanding"/>
    <label xlink:type="resource" xlink:label="label_PreferredStockSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PreferredStockSharesOutstanding" xml:lang="en-US" id="label_PreferredStockSharesOutstanding">Preferred stock, shares outstanding</label>
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    <label xlink:type="resource" xlink:label="label_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities" xml:lang="en-US" id="label_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities_2">Proceeds from Sale and Maturity of Available-for-sale Securities</label>
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    <label xlink:type="resource" xlink:label="label_ProceedsFromIssuanceOfLongTermDebt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ProceedsFromIssuanceOfLongTermDebt" xml:lang="en-US" id="label_ProceedsFromIssuanceOfLongTermDebt">Issuances of convertible senior subordinated notes, net</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="PropertyPlantAndEquipmentGross" xlink:title="PropertyPlantAndEquipmentGross"/>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PaymentsToAcquireAvailableForSaleSecurities" xlink:label="PaymentsToAcquireAvailableForSaleSecurities" xlink:title="PaymentsToAcquireAvailableForSaleSecurities"/>
    <label xlink:type="resource" xlink:label="label_PaymentsToAcquireAvailableForSaleSecurities" xlink:role="http://xbrl.us/us-gaap/role/label/negated" xlink:title="label_PaymentsToAcquireAvailableForSaleSecurities" xml:lang="en-US" id="label_PaymentsToAcquireAvailableForSaleSecurities">Purchases of marketable securities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsToAcquireAvailableForSaleSecurities" xlink:to="label_PaymentsToAcquireAvailableForSaleSecurities" xlink:title="label: PaymentsToAcquireAvailableForSaleSecurities to label_PaymentsToAcquireAvailableForSaleSecurities"/>
    <label xlink:type="resource" xlink:label="label_PaymentsToAcquireAvailableForSaleSecurities_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PaymentsToAcquireAvailableForSaleSecurities" xml:lang="en-US" id="label_PaymentsToAcquireAvailableForSaleSecurities_2">Payments to Acquire Available-for-sale Securities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsToAcquireAvailableForSaleSecurities" xlink:to="label_PaymentsToAcquireAvailableForSaleSecurities_2" xlink:title="label: PaymentsToAcquireAvailableForSaleSecurities to label_PaymentsToAcquireAvailableForSaleSecurities"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PaymentsToAcquireMarketableSecurities" xlink:label="PaymentsToAcquireMarketableSecurities" xlink:title="PaymentsToAcquireMarketableSecurities"/>
    <label xlink:type="resource" xlink:label="label_PaymentsToAcquireMarketableSecurities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PaymentsToAcquireMarketableSecurities" xml:lang="en-US" id="label_PaymentsToAcquireMarketableSecurities">Payments to Acquire Marketable Securities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsToAcquireMarketableSecurities" xlink:to="label_PaymentsToAcquireMarketableSecurities" xlink:title="label: PaymentsToAcquireMarketableSecurities to label_PaymentsToAcquireMarketableSecurities"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="PaymentsToAcquirePropertyPlantAndEquipment" xlink:title="PaymentsToAcquirePropertyPlantAndEquipment"/>
    <label xlink:type="resource" xlink:label="label_PaymentsToAcquirePropertyPlantAndEquipment_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PaymentsToAcquirePropertyPlantAndEquipment" xml:lang="en-US" id="label_PaymentsToAcquirePropertyPlantAndEquipment">Payments to Acquire Property, Plant, and Equipment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsToAcquirePropertyPlantAndEquipment" xlink:to="label_PaymentsToAcquirePropertyPlantAndEquipment_2" xlink:title="label: PaymentsToAcquirePropertyPlantAndEquipment to label_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <label xlink:type="resource" xlink:label="label_PaymentsToAcquirePropertyPlantAndEquipment" xlink:role="http://xbrl.us/us-gaap/role/label/negated" xlink:title="label_PaymentsToAcquirePropertyPlantAndEquipment" xml:lang="en-US" id="label_PaymentsToAcquirePropertyPlantAndEquipment_2">Expenditures for property and equipment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsToAcquirePropertyPlantAndEquipment" xlink:to="label_PaymentsToAcquirePropertyPlantAndEquipment" xlink:title="label: PaymentsToAcquirePropertyPlantAndEquipment to label_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt" xlink:label="RepaymentsOfLongTermDebt" xlink:title="RepaymentsOfLongTermDebt"/>
    <label xlink:type="resource" xlink:label="label_RepaymentsOfLongTermDebt_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RepaymentsOfLongTermDebt" xml:lang="en-US" id="label_RepaymentsOfLongTermDebt_2">Repayments of Long-term Debt</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RepaymentsOfLongTermDebt" xlink:to="label_RepaymentsOfLongTermDebt_2" xlink:title="label: RepaymentsOfLongTermDebt to label_RepaymentsOfLongTermDebt"/>
    <label xlink:type="resource" xlink:label="label_RepaymentsOfLongTermDebt" xlink:role="http://xbrl.us/us-gaap/role/label/negated" xlink:title="label_RepaymentsOfLongTermDebt" xml:lang="en-US" id="label_RepaymentsOfLongTermDebt">Repayment of collaborator development loan (due 2008)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RepaymentsOfLongTermDebt" xlink:to="label_RepaymentsOfLongTermDebt" xlink:title="label: RepaymentsOfLongTermDebt to label_RepaymentsOfLongTermDebt"/>
    <label xlink:type="resource" xlink:label="label_RepaymentsOfLongTermDebt_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RepaymentsOfLongTermDebt" xml:lang="en-US" id="label_RepaymentsOfLongTermDebt_3">Repayment of outstanding loans</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RepaymentsOfLongTermDebt" xlink:to="label_RepaymentsOfLongTermDebt_3" xlink:title="label: RepaymentsOfLongTermDebt to label_RepaymentsOfLongTermDebt"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_RepaymentsOfConvertibleDebt" xlink:label="RepaymentsOfConvertibleDebt" xlink:title="RepaymentsOfConvertibleDebt"/>
    <label xlink:type="resource" xlink:label="label_RepaymentsOfConvertibleDebt_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RepaymentsOfConvertibleDebt" xml:lang="en-US" id="label_RepaymentsOfConvertibleDebt_2">Repayments of Convertible Debt</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RepaymentsOfConvertibleDebt" xlink:to="label_RepaymentsOfConvertibleDebt_2" xlink:title="label: RepaymentsOfConvertibleDebt to label_RepaymentsOfConvertibleDebt"/>
    <label xlink:type="resource" xlink:label="label_RepaymentsOfConvertibleDebt" xlink:role="http://xbrl.us/us-gaap/role/label/negated" xlink:title="label_RepaymentsOfConvertibleDebt" xml:lang="en-US" id="label_RepaymentsOfConvertibleDebt">Principal payments on convertible subordinated notes (due September 2007)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RepaymentsOfConvertibleDebt" xlink:to="label_RepaymentsOfConvertibleDebt" xlink:title="label: RepaymentsOfConvertibleDebt to label_RepaymentsOfConvertibleDebt"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock" xlink:label="ResearchDevelopmentAndComputerSoftwarePolicyTextBlock" xlink:title="ResearchDevelopmentAndComputerSoftwarePolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock" xml:lang="en-US" id="label_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock_2">Research, Development, and Computer Software, Policy [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ResearchDevelopmentAndComputerSoftwarePolicyTextBlock" xlink:to="label_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock_2" xlink:title="label: ResearchDevelopmentAndComputerSoftwarePolicyTextBlock to label_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock" xml:lang="en-US" id="label_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock">Research and Development Expenses</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ResearchDevelopmentAndComputerSoftwarePolicyTextBlock" xlink:to="label_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock" xlink:title="label: ResearchDevelopmentAndComputerSoftwarePolicyTextBlock to label_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTextBlock" xlink:label="ScheduleOfRestrictedCashAndCashEquivalentsTextBlock" xlink:title="ScheduleOfRestrictedCashAndCashEquivalentsTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfRestrictedCashAndCashEquivalentsTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfRestrictedCashAndCashEquivalentsTextBlock" xml:lang="en-US" id="label_ScheduleOfRestrictedCashAndCashEquivalentsTextBlock">Schedule of Restricted Cash and Cash Equivalents [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfRestrictedCashAndCashEquivalentsTextBlock" xlink:to="label_ScheduleOfRestrictedCashAndCashEquivalentsTextBlock_2" xlink:title="label: ScheduleOfRestrictedCashAndCashEquivalentsTextBlock to label_ScheduleOfRestrictedCashAndCashEquivalentsTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfRestrictedCashAndCashEquivalentsTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfRestrictedCashAndCashEquivalentsTextBlock" xml:lang="en-US" id="label_ScheduleOfRestrictedCashAndCashEquivalentsTextBlock_2">Restricted Cash</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfRestrictedCashAndCashEquivalentsTextBlock" xlink:to="label_ScheduleOfRestrictedCashAndCashEquivalentsTextBlock" xlink:title="label: ScheduleOfRestrictedCashAndCashEquivalentsTextBlock to label_ScheduleOfRestrictedCashAndCashEquivalentsTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_RestructuringCharges" xlink:label="RestructuringCharges" xlink:title="RestructuringCharges"/>
    <label xlink:type="resource" xlink:label="label_RestructuringCharges_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RestructuringCharges" xml:lang="en-US" id="label_RestructuringCharges_2">Restructuring Charges</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestructuringCharges" xlink:to="label_RestructuringCharges_2" xlink:title="label: RestructuringCharges to label_RestructuringCharges"/>
    <label xlink:type="resource" xlink:label="label_RestructuringCharges" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RestructuringCharges" xml:lang="en-US" id="label_RestructuringCharges">Restructuring expense</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestructuringCharges" xlink:to="label_RestructuringCharges" xlink:title="label: RestructuringCharges to label_RestructuringCharges"/>
    <label xlink:type="resource" xlink:label="label_RestructuringCharges_3" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_RestructuringCharges" xml:lang="en-US" id="label_RestructuringCharges_3">Additional charge</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestructuringCharges" xlink:to="label_RestructuringCharges_3" xlink:title="label: RestructuringCharges to label_RestructuringCharges"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock" xlink:label="RestructuringAndRelatedActivitiesDisclosureTextBlock" xlink:title="RestructuringAndRelatedActivitiesDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_RestructuringAndRelatedActivitiesDisclosureTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RestructuringAndRelatedActivitiesDisclosureTextBlock" xml:lang="en-US" id="label_RestructuringAndRelatedActivitiesDisclosureTextBlock_2">Restructuring and Related Activities Disclosure [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestructuringAndRelatedActivitiesDisclosureTextBlock" xlink:to="label_RestructuringAndRelatedActivitiesDisclosureTextBlock_2" xlink:title="label: RestructuringAndRelatedActivitiesDisclosureTextBlock to label_RestructuringAndRelatedActivitiesDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_RestructuringAndRelatedActivitiesDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RestructuringAndRelatedActivitiesDisclosureTextBlock" xml:lang="en-US" id="label_RestructuringAndRelatedActivitiesDisclosureTextBlock">Restructuring Expense</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestructuringAndRelatedActivitiesDisclosureTextBlock" xlink:to="label_RestructuringAndRelatedActivitiesDisclosureTextBlock" xlink:title="label: RestructuringAndRelatedActivitiesDisclosureTextBlock to label_RestructuringAndRelatedActivitiesDisclosureTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_RestructuringReserve" xlink:label="RestructuringReserve" xlink:title="RestructuringReserve"/>
    <label xlink:type="resource" xlink:label="label_RestructuringReserve_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RestructuringReserve" xml:lang="en-US" id="label_RestructuringReserve_3">Restructuring Reserve</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestructuringReserve" xlink:to="label_RestructuringReserve_3" xlink:title="label: RestructuringReserve to label_RestructuringReserve"/>
    <label xlink:type="resource" xlink:label="label_RestructuringReserve" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:title="label_RestructuringReserve" xml:lang="en-US" id="label_RestructuringReserve">Liability at the beginning of the period</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestructuringReserve" xlink:to="label_RestructuringReserve" xlink:title="label: RestructuringReserve to label_RestructuringReserve"/>
    <label xlink:type="resource" xlink:label="label_RestructuringReserve_2" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:title="label_RestructuringReserve" xml:lang="en-US" id="label_RestructuringReserve_2">Liability at the end of the period</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestructuringReserve" xlink:to="label_RestructuringReserve_2" xlink:title="label: RestructuringReserve to label_RestructuringReserve"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_RestructuringReserveAccrualAdjustment" xlink:label="RestructuringReserveAccrualAdjustment" xlink:title="RestructuringReserveAccrualAdjustment"/>
    <label xlink:type="resource" xlink:label="label_RestructuringReserveAccrualAdjustment_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RestructuringReserveAccrualAdjustment" xml:lang="en-US" id="label_RestructuringReserveAccrualAdjustment_2">Restructuring Reserve, Accrual Adjustment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestructuringReserveAccrualAdjustment" xlink:to="label_RestructuringReserveAccrualAdjustment_2" xlink:title="label: RestructuringReserveAccrualAdjustment to label_RestructuringReserveAccrualAdjustment"/>
    <label xlink:type="resource" xlink:label="label_RestructuringReserveAccrualAdjustment" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RestructuringReserveAccrualAdjustment" xml:lang="en-US" id="label_RestructuringReserveAccrualAdjustment">Credit for portion of facility the entity decided to occupy in 2005</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestructuringReserveAccrualAdjustment" xlink:to="label_RestructuringReserveAccrualAdjustment" xlink:title="label: RestructuringReserveAccrualAdjustment to label_RestructuringReserveAccrualAdjustment"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_RestructuringReservePeriodIncreaseDecrease" xlink:label="RestructuringReservePeriodIncreaseDecrease" xlink:title="RestructuringReservePeriodIncreaseDecrease"/>
    <label xlink:type="resource" xlink:label="label_RestructuringReservePeriodIncreaseDecrease_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RestructuringReservePeriodIncreaseDecrease" xml:lang="en-US" id="label_RestructuringReservePeriodIncreaseDecrease_2">Restructuring Reserve, Period Increase (Decrease)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestructuringReservePeriodIncreaseDecrease" xlink:to="label_RestructuringReservePeriodIncreaseDecrease_2" xlink:title="label: RestructuringReservePeriodIncreaseDecrease to label_RestructuringReservePeriodIncreaseDecrease"/>
    <label xlink:type="resource" xlink:label="label_RestructuringReservePeriodIncreaseDecrease" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RestructuringReservePeriodIncreaseDecrease" xml:lang="en-US" id="label_RestructuringReservePeriodIncreaseDecrease">Accrued restructuring expense</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestructuringReservePeriodIncreaseDecrease" xlink:to="label_RestructuringReservePeriodIncreaseDecrease" xlink:title="label: RestructuringReservePeriodIncreaseDecrease to label_RestructuringReservePeriodIncreaseDecrease"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_RestructuringReserveSettledWithCash" xlink:label="RestructuringReserveSettledWithCash" xlink:title="RestructuringReserveSettledWithCash"/>
    <label xlink:type="resource" xlink:label="label_RestructuringReserveSettledWithCash_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RestructuringReserveSettledWithCash" xml:lang="en-US" id="label_RestructuringReserveSettledWithCash_2">Restructuring Reserve, Settled with Cash</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestructuringReserveSettledWithCash" xlink:to="label_RestructuringReserveSettledWithCash_2" xlink:title="label: RestructuringReserveSettledWithCash to label_RestructuringReserveSettledWithCash"/>
    <label xlink:type="resource" xlink:label="label_RestructuringReserveSettledWithCash" xlink:role="http://xbrl.us/us-gaap/role/label/negated" xlink:title="label_RestructuringReserveSettledWithCash" xml:lang="en-US" id="label_RestructuringReserveSettledWithCash">Cash payments</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestructuringReserveSettledWithCash" xlink:to="label_RestructuringReserveSettledWithCash" xlink:title="label: RestructuringReserveSettledWithCash to label_RestructuringReserveSettledWithCash"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_RestructuringReserveNoncurrent" xlink:label="RestructuringReserveNoncurrent" xlink:title="RestructuringReserveNoncurrent"/>
    <label xlink:type="resource" xlink:label="label_RestructuringReserveNoncurrent_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RestructuringReserveNoncurrent" xml:lang="en-US" id="label_RestructuringReserveNoncurrent_2">Restructuring Reserve, Noncurrent</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestructuringReserveNoncurrent" xlink:to="label_RestructuringReserveNoncurrent_2" xlink:title="label: RestructuringReserveNoncurrent to label_RestructuringReserveNoncurrent"/>
    <label xlink:type="resource" xlink:label="label_RestructuringReserveNoncurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RestructuringReserveNoncurrent" xml:lang="en-US" id="label_RestructuringReserveNoncurrent">Accrued restructuring expense, excluding current portion</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestructuringReserveNoncurrent" xlink:to="label_RestructuringReserveNoncurrent" xlink:title="label: RestructuringReserveNoncurrent to label_RestructuringReserveNoncurrent"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_RestructuringReserveCurrent" xlink:label="RestructuringReserveCurrent" xlink:title="RestructuringReserveCurrent"/>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestructuringReserveCurrent" xlink:to="label_RestructuringReserveCurrent_2" xlink:title="label: RestructuringReserveCurrent to label_RestructuringReserveCurrent"/>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="RetainedEarningsAccumulatedDeficit" xlink:title="RetainedEarningsAccumulatedDeficit"/>
    <label xlink:type="resource" xlink:label="label_RetainedEarningsAccumulatedDeficit_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RetainedEarningsAccumulatedDeficit" xml:lang="en-US" id="label_RetainedEarningsAccumulatedDeficit_2">Retained Earnings (Accumulated Deficit)</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_RevenueRecognitionPolicyTextBlock" xlink:label="RevenueRecognitionPolicyTextBlock" xlink:title="RevenueRecognitionPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_RevenueRecognitionPolicyTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RevenueRecognitionPolicyTextBlock" xml:lang="en-US" id="label_RevenueRecognitionPolicyTextBlock_2">Revenue Recognition, Policy [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevenueRecognitionPolicyTextBlock" xlink:to="label_RevenueRecognitionPolicyTextBlock_2" xlink:title="label: RevenueRecognitionPolicyTextBlock to label_RevenueRecognitionPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_RevenueRecognitionPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RevenueRecognitionPolicyTextBlock" xml:lang="en-US" id="label_RevenueRecognitionPolicyTextBlock">Revenue Recognition</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevenueRecognitionPolicyTextBlock" xlink:to="label_RevenueRecognitionPolicyTextBlock" xlink:title="label: RevenueRecognitionPolicyTextBlock to label_RevenueRecognitionPolicyTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_RoyaltyRevenue" xlink:label="RoyaltyRevenue" xlink:title="RoyaltyRevenue"/>
    <label xlink:type="resource" xlink:label="label_RoyaltyRevenue_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RoyaltyRevenue" xml:lang="en-US" id="label_RoyaltyRevenue_2">Royalty Revenue</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RoyaltyRevenue" xlink:to="label_RoyaltyRevenue_2" xlink:title="label: RoyaltyRevenue to label_RoyaltyRevenue"/>
    <label xlink:type="resource" xlink:label="label_RoyaltyRevenue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RoyaltyRevenue" xml:lang="en-US" id="label_RoyaltyRevenue">Royalty revenues</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RoyaltyRevenue" xlink:to="label_RoyaltyRevenue" xlink:title="label: RoyaltyRevenue to label_RoyaltyRevenue"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_SaleOfStockNameOfTransactionDomain" xlink:label="SaleOfStockNameOfTransactionDomain" xlink:title="SaleOfStockNameOfTransactionDomain"/>
    <label xlink:type="resource" xlink:label="label_SaleOfStockNameOfTransactionDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SaleOfStockNameOfTransactionDomain" xml:lang="en-US" id="label_SaleOfStockNameOfTransactionDomain">Sale of Stock, Name of Transaction</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SaleOfStockNameOfTransactionDomain" xlink:to="label_SaleOfStockNameOfTransactionDomain" xlink:title="label: SaleOfStockNameOfTransactionDomain to label_SaleOfStockNameOfTransactionDomain"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ScheduleOfGuaranteeObligationsTextBlock" xlink:label="ScheduleOfGuaranteeObligationsTextBlock" xlink:title="ScheduleOfGuaranteeObligationsTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfGuaranteeObligationsTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfGuaranteeObligationsTextBlock" xml:lang="en-US" id="label_ScheduleOfGuaranteeObligationsTextBlock_2">Schedule of Guarantor Obligations [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfGuaranteeObligationsTextBlock" xlink:to="label_ScheduleOfGuaranteeObligationsTextBlock_2" xlink:title="label: ScheduleOfGuaranteeObligationsTextBlock to label_ScheduleOfGuaranteeObligationsTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfGuaranteeObligationsTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfGuaranteeObligationsTextBlock" xml:lang="en-US" id="label_ScheduleOfGuaranteeObligationsTextBlock">Guarantees</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfGuaranteeObligationsTextBlock" xlink:to="label_ScheduleOfGuaranteeObligationsTextBlock" xlink:title="label: ScheduleOfGuaranteeObligationsTextBlock to label_ScheduleOfGuaranteeObligationsTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock" xlink:label="ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock" xlink:title="ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock" xml:lang="en-US" id="label_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock_2">Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock" xlink:to="label_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock_2" xlink:title="label: ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock to label_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock" xml:lang="en-US" id="label_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock">Stock-based compensation expense by line item</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock" xlink:to="label_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock" xlink:title="label: ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock to label_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ScheduleOfLossContingenciesByContingencyTextBlock" xlink:label="ScheduleOfLossContingenciesByContingencyTextBlock" xlink:title="ScheduleOfLossContingenciesByContingencyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfLossContingenciesByContingencyTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfLossContingenciesByContingencyTextBlock" xml:lang="en-US" id="label_ScheduleOfLossContingenciesByContingencyTextBlock">Schedule of Loss Contingencies by Contingency [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfLossContingenciesByContingencyTextBlock" xlink:to="label_ScheduleOfLossContingenciesByContingencyTextBlock_2" xlink:title="label: ScheduleOfLossContingenciesByContingencyTextBlock to label_ScheduleOfLossContingenciesByContingencyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfLossContingenciesByContingencyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfLossContingenciesByContingencyTextBlock" xml:lang="en-US" id="label_ScheduleOfLossContingenciesByContingencyTextBlock_2">Contingencies</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfLossContingenciesByContingencyTextBlock" xlink:to="label_ScheduleOfLossContingenciesByContingencyTextBlock" xlink:title="label: ScheduleOfLossContingenciesByContingencyTextBlock to label_ScheduleOfLossContingenciesByContingencyTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock" xlink:label="DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock" xlink:title="DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock"/>
    <label xlink:type="resource" xlink:label="label_DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock" xml:lang="en-US" id="label_DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock_2">Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock" xlink:to="label_DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock_2" xlink:title="label: DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock to label_DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock"/>
    <label xlink:type="resource" xlink:label="label_DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock" xml:lang="en-US" id="label_DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock">Stock-based compensation expense by type of award</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTextBlock" xlink:label="PropertyPlantAndEquipmentTextBlock" xlink:title="PropertyPlantAndEquipmentTextBlock"/>
    <label xlink:type="resource" xlink:label="label_PropertyPlantAndEquipmentTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PropertyPlantAndEquipmentTextBlock" xml:lang="en-US" id="label_PropertyPlantAndEquipmentTextBlock_2">Property, Plant and Equipment [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentTextBlock" xlink:to="label_PropertyPlantAndEquipmentTextBlock_2" xlink:title="label: PropertyPlantAndEquipmentTextBlock to label_PropertyPlantAndEquipmentTextBlock"/>
    <label xlink:type="resource" xlink:label="label_PropertyPlantAndEquipmentTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PropertyPlantAndEquipmentTextBlock" xml:lang="en-US" id="label_PropertyPlantAndEquipmentTextBlock">Schedule of Property and equipment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentTextBlock" xlink:to="label_PropertyPlantAndEquipmentTextBlock" xlink:title="label: PropertyPlantAndEquipmentTextBlock to label_PropertyPlantAndEquipmentTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ScheduleOfSubsequentEventsTextBlock" xlink:label="ScheduleOfSubsequentEventsTextBlock" xlink:title="ScheduleOfSubsequentEventsTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfSubsequentEventsTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfSubsequentEventsTextBlock" xml:lang="en-US" id="label_ScheduleOfSubsequentEventsTextBlock_2">Schedule of Subsequent Events [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfSubsequentEventsTextBlock" xlink:to="label_ScheduleOfSubsequentEventsTextBlock_2" xlink:title="label: ScheduleOfSubsequentEventsTextBlock to label_ScheduleOfSubsequentEventsTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfSubsequentEventsTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfSubsequentEventsTextBlock" xml:lang="en-US" id="label_ScheduleOfSubsequentEventsTextBlock">Subsequent Event</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfSubsequentEventsTextBlock" xlink:to="label_ScheduleOfSubsequentEventsTextBlock" xlink:title="label: ScheduleOfSubsequentEventsTextBlock to label_ScheduleOfSubsequentEventsTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_SecuredDebt" xlink:label="SecuredDebt" xlink:title="SecuredDebt"/>
    <label xlink:type="resource" xlink:label="label_SecuredDebt_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SecuredDebt" xml:lang="en-US" id="label_SecuredDebt_2">Secured Debt</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SecuredDebt" xlink:to="label_SecuredDebt_2" xlink:title="label: SecuredDebt to label_SecuredDebt"/>
    <label xlink:type="resource" xlink:label="label_SecuredDebt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SecuredDebt" xml:lang="en-US" id="label_SecuredDebt">2012 Notes, excluding fair value of embedded derivative</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SecuredDebt" xlink:to="label_SecuredDebt" xlink:title="label: SecuredDebt to label_SecuredDebt"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_SecuredLongTermDebt" xlink:label="SecuredLongTermDebt" xlink:title="SecuredLongTermDebt"/>
    <label xlink:type="resource" xlink:label="label_SecuredLongTermDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SecuredLongTermDebt" xml:lang="en-US" id="label_SecuredLongTermDebt">Secured Long-term Debt, Noncurrent</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SecuredLongTermDebt" xlink:to="label_SecuredLongTermDebt" xlink:title="label: SecuredLongTermDebt to label_SecuredLongTermDebt"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_SellingGeneralAndAdministrativeExpense" xlink:label="SellingGeneralAndAdministrativeExpense" xlink:title="SellingGeneralAndAdministrativeExpense"/>
    <label xlink:type="resource" xlink:label="label_SellingGeneralAndAdministrativeExpense_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SellingGeneralAndAdministrativeExpense" xml:lang="en-US" id="label_SellingGeneralAndAdministrativeExpense_2">Selling, General and Administrative Expense</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SellingGeneralAndAdministrativeExpense" xlink:to="label_SellingGeneralAndAdministrativeExpense_2" xlink:title="label: SellingGeneralAndAdministrativeExpense to label_SellingGeneralAndAdministrativeExpense"/>
    <label xlink:type="resource" xlink:label="label_SellingGeneralAndAdministrativeExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SellingGeneralAndAdministrativeExpense" xml:lang="en-US" id="label_SellingGeneralAndAdministrativeExpense">Sales, general and administrative expenses</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SellingGeneralAndAdministrativeExpense" xlink:to="label_SellingGeneralAndAdministrativeExpense" xlink:title="label: SellingGeneralAndAdministrativeExpense to label_SellingGeneralAndAdministrativeExpense"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_2">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period</label>
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    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:role="http://xbrl.us/us-gaap/role/label/negated" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod">Restricted stock, cancelled (in shares)</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue_2">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period, Weighted Average Grant Date Fair Value</label>
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    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice_2">Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price</label>
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    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_2">Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price</label>
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    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm">Weighted-average Remaining Contractual Life, outstanding (in years)</label>
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    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_4">Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_4" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
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    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_2">Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number</label>
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    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableIntrinsicValue_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableIntrinsicValue" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableIntrinsicValue_2">Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value</label>
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    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_2">Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm_2">Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term</label>
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    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate">Expected stock price volatility (as a percent)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_2">Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_2" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate">Risk-free interest rate (as a percent)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxis" xlink:label="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxis" xlink:title="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxis"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxis" xml:lang="en-US" id="label_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxis">Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Award Type and Plan Name</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxis" xlink:to="label_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxis" xlink:title="label: ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxis to label_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAndPlanNameAxis"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions" xlink:label="EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions" xlink:title="EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions"/>
    <label xlink:type="resource" xlink:label="label_EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions" xml:lang="en-US" id="label_EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions_2">Employee Service Share-based Compensation, Cash Received from Exercise of Stock Options</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions" xlink:to="label_EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions_2" xlink:title="label: EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions to label_EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions"/>
    <label xlink:type="resource" xlink:label="label_EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions" xml:lang="en-US" id="label_EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions">Total cash received from employees as a result of employee stock option exercises</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions" xlink:to="label_EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions" xlink:title="label: EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions to label_EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:title="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xml:lang="en-US" id="label_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain">Share-based Compensation Arrangements by Share-based Payment Award, Award Type and Plan Name</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="label_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:title="label: ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain to label_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems">Share-based Compensation Arrangement by Share-based Payment Award</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2">Share-based Compensation Arrangement by Share-based Payment Award [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock" xlink:label="ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock" xlink:title="ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock" xml:lang="en-US" id="label_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock_2">Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock" xlink:to="label_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock_2" xlink:title="label: ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock to label_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock" xml:lang="en-US" id="label_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock">Stock options outstanding and exercisable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock" xlink:to="label_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock" xlink:title="label: ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock to label_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:title="ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xml:lang="en-US" id="label_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable">Schedule of Share-based Compensation Arrangements by Share-based Payment Award</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="label_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:title="label: ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable to label_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ShortTermBorrowings" xlink:label="ShortTermBorrowings" xlink:title="ShortTermBorrowings"/>
    <label xlink:type="resource" xlink:label="label_ShortTermBorrowings_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShortTermBorrowings" xml:lang="en-US" id="label_ShortTermBorrowings">Short-term Borrowings</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShortTermBorrowings" xlink:to="label_ShortTermBorrowings_2" xlink:title="label: ShortTermBorrowings to label_ShortTermBorrowings"/>
    <label xlink:type="resource" xlink:label="label_ShortTermBorrowings" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShortTermBorrowings" xml:lang="en-US" id="label_ShortTermBorrowings_2">Collaborator development loan (due May 2008)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShortTermBorrowings" xlink:to="label_ShortTermBorrowings" xlink:title="label: ShortTermBorrowings to label_ShortTermBorrowings"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_SignificantAccountingPoliciesTextBlock" xlink:label="SignificantAccountingPoliciesTextBlock" xlink:title="SignificantAccountingPoliciesTextBlock"/>
    <label xlink:type="resource" xlink:label="label_SignificantAccountingPoliciesTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SignificantAccountingPoliciesTextBlock" xml:lang="en-US" id="label_SignificantAccountingPoliciesTextBlock_2">Significant Accounting Policies [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SignificantAccountingPoliciesTextBlock" xlink:to="label_SignificantAccountingPoliciesTextBlock_2" xlink:title="label: SignificantAccountingPoliciesTextBlock to label_SignificantAccountingPoliciesTextBlock"/>
    <label xlink:type="resource" xlink:label="label_SignificantAccountingPoliciesTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SignificantAccountingPoliciesTextBlock" xml:lang="en-US" id="label_SignificantAccountingPoliciesTextBlock">Accounting Policies</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SignificantAccountingPoliciesTextBlock" xlink:to="label_SignificantAccountingPoliciesTextBlock" xlink:title="label: SignificantAccountingPoliciesTextBlock to label_SignificantAccountingPoliciesTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_StateAndLocalJurisdictionMember" xlink:label="StateAndLocalJurisdictionMember" xlink:title="StateAndLocalJurisdictionMember"/>
    <label xlink:type="resource" xlink:label="label_StateAndLocalJurisdictionMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StateAndLocalJurisdictionMember" xml:lang="en-US" id="label_StateAndLocalJurisdictionMember">State</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StateAndLocalJurisdictionMember" xlink:to="label_StateAndLocalJurisdictionMember" xlink:title="label: StateAndLocalJurisdictionMember to label_StateAndLocalJurisdictionMember"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_StockIssued" xlink:label="StockIssued" xlink:title="StockIssued"/>
    <label xlink:type="resource" xlink:label="label_StockIssued" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StockIssued" xml:lang="en-US" id="label_StockIssued">Fair value of common stock issued to acquire ViroChem</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssued" xlink:to="label_StockIssued" xlink:title="label: StockIssued to label_StockIssued"/>
    <label xlink:type="resource" xlink:label="label_StockIssued_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockIssued" xml:lang="en-US" id="label_StockIssued_2">Stock Issued</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssued" xlink:to="label_StockIssued_2" xlink:title="label: StockIssued to label_StockIssued"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_StockOptionMember" xlink:label="StockOptionMember" xlink:title="StockOptionMember"/>
    <label xlink:type="resource" xlink:label="label_StockOptionMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockOptionMember" xml:lang="en-US" id="label_StockOptionMember">Stock Options:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockOptionMember" xlink:to="label_StockOptionMember" xlink:title="label: StockOptionMember to label_StockOptionMember"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_SubordinatedBorrowingInterestRate" xlink:label="SubordinatedBorrowingInterestRate" xlink:title="SubordinatedBorrowingInterestRate"/>
    <label xlink:type="resource" xlink:label="label_SubordinatedBorrowingInterestRate_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SubordinatedBorrowingInterestRate" xml:lang="en-US" id="label_SubordinatedBorrowingInterestRate_2">Subordinated Borrowing, Interest Rate</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubordinatedBorrowingInterestRate" xlink:to="label_SubordinatedBorrowingInterestRate_2" xlink:title="label: SubordinatedBorrowingInterestRate to label_SubordinatedBorrowingInterestRate"/>
    <label xlink:type="resource" xlink:label="label_SubordinatedBorrowingInterestRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SubordinatedBorrowingInterestRate" xml:lang="en-US" id="label_SubordinatedBorrowingInterestRate">Interest rate (as a percent)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubordinatedBorrowingInterestRate" xlink:to="label_SubordinatedBorrowingInterestRate" xlink:title="label: SubordinatedBorrowingInterestRate to label_SubordinatedBorrowingInterestRate"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="SubsequentEventTypeAxis" xlink:title="SubsequentEventTypeAxis"/>
    <label xlink:type="resource" xlink:label="label_SubsequentEventTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SubsequentEventTypeAxis" xml:lang="en-US" id="label_SubsequentEventTypeAxis">Subsequent Event Type [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubsequentEventTypeAxis" xlink:to="label_SubsequentEventTypeAxis" xlink:title="label: SubsequentEventTypeAxis to label_SubsequentEventTypeAxis"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_SubsequentEventLineItems" xlink:label="SubsequentEventLineItems" xlink:title="SubsequentEventLineItems"/>
    <label xlink:type="resource" xlink:label="label_SubsequentEventLineItems_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SubsequentEventLineItems" xml:lang="en-US" id="label_SubsequentEventLineItems_2">Subsequent Event [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubsequentEventLineItems" xlink:to="label_SubsequentEventLineItems_2" xlink:title="label: SubsequentEventLineItems to label_SubsequentEventLineItems"/>
    <label xlink:type="resource" xlink:label="label_SubsequentEventLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SubsequentEventLineItems" xml:lang="en-US" id="label_SubsequentEventLineItems">Credit agreements</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubsequentEventLineItems" xlink:to="label_SubsequentEventLineItems" xlink:title="label: SubsequentEventLineItems to label_SubsequentEventLineItems"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_SubsequentEventTable" xlink:label="SubsequentEventTable" xlink:title="SubsequentEventTable"/>
    <label xlink:type="resource" xlink:label="label_SubsequentEventTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SubsequentEventTable" xml:lang="en-US" id="label_SubsequentEventTable">Subsequent Event [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubsequentEventTable" xlink:to="label_SubsequentEventTable" xlink:title="label: SubsequentEventTable to label_SubsequentEventTable"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="SubsequentEventTypeDomain" xlink:title="SubsequentEventTypeDomain"/>
    <label xlink:type="resource" xlink:label="label_SubsequentEventTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SubsequentEventTypeDomain" xml:lang="en-US" id="label_SubsequentEventTypeDomain">Subsequent Event Type [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubsequentEventTypeDomain" xlink:to="label_SubsequentEventTypeDomain" xlink:title="label: SubsequentEventTypeDomain to label_SubsequentEventTypeDomain"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_TaxCreditCarryforwardAmount" xlink:label="TaxCreditCarryforwardAmount" xlink:title="TaxCreditCarryforwardAmount"/>
    <label xlink:type="resource" xlink:label="label_TaxCreditCarryforwardAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_TaxCreditCarryforwardAmount" xml:lang="en-US" id="label_TaxCreditCarryforwardAmount">Tax Credit</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="AssetsCurrent" xlink:title="AssetsCurrent"/>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_USTreasurySecuritiesMember" xlink:label="USTreasurySecuritiesMember" xlink:title="USTreasurySecuritiesMember"/>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_USGovernmentSecuritiesAtCarryingValue" xlink:label="USGovernmentSecuritiesAtCarryingValue" xlink:title="USGovernmentSecuritiesAtCarryingValue"/>
    <label xlink:type="resource" xlink:label="label_USGovernmentSecuritiesAtCarryingValue_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_USGovernmentSecuritiesAtCarryingValue" xml:lang="en-US" id="label_USGovernmentSecuritiesAtCarryingValue_2">US Government Securities, at Carrying Value</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="WeightedAverageNumberOfDilutedSharesOutstanding" xlink:title="WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <label xlink:type="resource" xlink:label="label_WeightedAverageNumberOfDilutedSharesOutstanding_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WeightedAverageNumberOfDilutedSharesOutstanding" xml:lang="en-US" id="label_WeightedAverageNumberOfDilutedSharesOutstanding_2">Weighted Average Number of Shares Outstanding, Diluted</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="label_WeightedAverageNumberOfDilutedSharesOutstanding_2" xlink:title="label: WeightedAverageNumberOfDilutedSharesOutstanding to label_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <label xlink:type="resource" xlink:label="label_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_WeightedAverageNumberOfDilutedSharesOutstanding" xml:lang="en-US" id="label_WeightedAverageNumberOfDilutedSharesOutstanding">Diluted weighted-average number of common shares outstanding (in shares)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="label_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:title="label: WeightedAverageNumberOfDilutedSharesOutstanding to label_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="WeightedAverageNumberOfSharesOutstandingBasic" xlink:title="WeightedAverageNumberOfSharesOutstandingBasic"/>
    <label xlink:type="resource" xlink:label="label_WeightedAverageNumberOfSharesOutstandingBasic_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WeightedAverageNumberOfSharesOutstandingBasic" xml:lang="en-US" id="label_WeightedAverageNumberOfSharesOutstandingBasic_2">Weighted Average Number of Shares Outstanding, Basic</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberOfSharesOutstandingBasic" xlink:to="label_WeightedAverageNumberOfSharesOutstandingBasic_2" xlink:title="label: WeightedAverageNumberOfSharesOutstandingBasic to label_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <label xlink:type="resource" xlink:label="label_WeightedAverageNumberOfSharesOutstandingBasic" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_WeightedAverageNumberOfSharesOutstandingBasic" xml:lang="en-US" id="label_WeightedAverageNumberOfSharesOutstandingBasic">Basic weighted-average number of common shares outstanding (in shares)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberOfSharesOutstandingBasic" xlink:to="label_WeightedAverageNumberOfSharesOutstandingBasic" xlink:title="label: WeightedAverageNumberOfSharesOutstandingBasic to label_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_WriteOffOfDeferredDebtIssuanceCost" xlink:label="WriteOffOfDeferredDebtIssuanceCost" xlink:title="WriteOffOfDeferredDebtIssuanceCost"/>
    <label xlink:type="resource" xlink:label="label_WriteOffOfDeferredDebtIssuanceCost_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WriteOffOfDeferredDebtIssuanceCost" xml:lang="en-US" id="label_WriteOffOfDeferredDebtIssuanceCost_2">Write off of Deferred Debt Issuance Cost</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WriteOffOfDeferredDebtIssuanceCost" xlink:to="label_WriteOffOfDeferredDebtIssuanceCost_2" xlink:title="label: WriteOffOfDeferredDebtIssuanceCost to label_WriteOffOfDeferredDebtIssuanceCost"/>
    <label xlink:type="resource" xlink:label="label_WriteOffOfDeferredDebtIssuanceCost" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_WriteOffOfDeferredDebtIssuanceCost" xml:lang="en-US" id="label_WriteOffOfDeferredDebtIssuanceCost">Unamortized debt issuance costs of converted convertible senior subordinated notes (due 2013) offset to additional paid-in capital</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WriteOffOfDeferredDebtIssuanceCost" xlink:to="label_WriteOffOfDeferredDebtIssuanceCost" xlink:title="label: WriteOffOfDeferredDebtIssuanceCost to label_WriteOffOfDeferredDebtIssuanceCost"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsNoncurrent" xlink:label="RestrictedCashAndCashEquivalentsNoncurrent" xlink:title="RestrictedCashAndCashEquivalentsNoncurrent"/>
    <label xlink:type="resource" xlink:label="label_RestrictedCashAndCashEquivalentsNoncurrent_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RestrictedCashAndCashEquivalentsNoncurrent" xml:lang="en-US" id="label_RestrictedCashAndCashEquivalentsNoncurrent_2">Restricted Cash and Cash Equivalents, Noncurrent</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestrictedCashAndCashEquivalentsNoncurrent" xlink:to="label_RestrictedCashAndCashEquivalentsNoncurrent_2" xlink:title="label: RestrictedCashAndCashEquivalentsNoncurrent to label_RestrictedCashAndCashEquivalentsNoncurrent"/>
    <label xlink:type="resource" xlink:label="label_RestrictedCashAndCashEquivalentsNoncurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RestrictedCashAndCashEquivalentsNoncurrent" xml:lang="en-US" id="label_RestrictedCashAndCashEquivalentsNoncurrent">Restricted cash</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestrictedCashAndCashEquivalentsNoncurrent" xlink:to="label_RestrictedCashAndCashEquivalentsNoncurrent" xlink:title="label: RestrictedCashAndCashEquivalentsNoncurrent to label_RestrictedCashAndCashEquivalentsNoncurrent"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_CommonStockMember" xlink:label="CommonStockMember" xlink:title="CommonStockMember"/>
    <label xlink:type="resource" xlink:label="label_CommonStockMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CommonStockMember" xml:lang="en-US" id="label_CommonStockMember">Common Stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockMember" xlink:to="label_CommonStockMember" xlink:title="label: CommonStockMember to label_CommonStockMember"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock" xlink:label="PropertyPlantAndEquipmentDisclosureTextBlock" xlink:title="PropertyPlantAndEquipmentDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_PropertyPlantAndEquipmentDisclosureTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PropertyPlantAndEquipmentDisclosureTextBlock" xml:lang="en-US" id="label_PropertyPlantAndEquipmentDisclosureTextBlock">Property, Plant and Equipment Disclosure [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentDisclosureTextBlock" xlink:to="label_PropertyPlantAndEquipmentDisclosureTextBlock_2" xlink:title="label: PropertyPlantAndEquipmentDisclosureTextBlock to label_PropertyPlantAndEquipmentDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_PropertyPlantAndEquipmentDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PropertyPlantAndEquipmentDisclosureTextBlock" xml:lang="en-US" id="label_PropertyPlantAndEquipmentDisclosureTextBlock_2">Property and Equipment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentDisclosureTextBlock" xlink:to="label_PropertyPlantAndEquipmentDisclosureTextBlock" xlink:title="label: PropertyPlantAndEquipmentDisclosureTextBlock to label_PropertyPlantAndEquipmentDisclosureTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="PropertyPlantAndEquipmentTypeDomain" xlink:title="PropertyPlantAndEquipmentTypeDomain"/>
    <label xlink:type="resource" xlink:label="label_PropertyPlantAndEquipmentTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PropertyPlantAndEquipmentTypeDomain" xml:lang="en-US" id="label_PropertyPlantAndEquipmentTypeDomain">Property, Plant and Equipment, Type [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentTypeDomain" xlink:to="label_PropertyPlantAndEquipmentTypeDomain" xlink:title="label: PropertyPlantAndEquipmentTypeDomain to label_PropertyPlantAndEquipmentTypeDomain"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLifeMaximum" xlink:label="PropertyPlantAndEquipmentUsefulLifeMaximum" xlink:title="PropertyPlantAndEquipmentUsefulLifeMaximum"/>
    <label xlink:type="resource" xlink:label="label_PropertyPlantAndEquipmentUsefulLifeMaximum_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PropertyPlantAndEquipmentUsefulLifeMaximum" xml:lang="en-US" id="label_PropertyPlantAndEquipmentUsefulLifeMaximum_2">Property, Plant and Equipment, Useful Life, Maximum</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentUsefulLifeMaximum" xlink:to="label_PropertyPlantAndEquipmentUsefulLifeMaximum_2" xlink:title="label: PropertyPlantAndEquipmentUsefulLifeMaximum to label_PropertyPlantAndEquipmentUsefulLifeMaximum"/>
    <label xlink:type="resource" xlink:label="label_PropertyPlantAndEquipmentUsefulLifeMaximum" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PropertyPlantAndEquipmentUsefulLifeMaximum" xml:lang="en-US" id="label_PropertyPlantAndEquipmentUsefulLifeMaximum">Property and equipment useful life, maximum (in years)</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLifeMinimum" xlink:label="PropertyPlantAndEquipmentUsefulLifeMinimum" xlink:title="PropertyPlantAndEquipmentUsefulLifeMinimum"/>
    <label xlink:type="resource" xlink:label="label_PropertyPlantAndEquipmentUsefulLifeMinimum_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PropertyPlantAndEquipmentUsefulLifeMinimum" xml:lang="en-US" id="label_PropertyPlantAndEquipmentUsefulLifeMinimum_2">Property, Plant and Equipment, Useful Life, Minimum</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentUsefulLifeMinimum" xlink:to="label_PropertyPlantAndEquipmentUsefulLifeMinimum_2" xlink:title="label: PropertyPlantAndEquipmentUsefulLifeMinimum to label_PropertyPlantAndEquipmentUsefulLifeMinimum"/>
    <label xlink:type="resource" xlink:label="label_PropertyPlantAndEquipmentUsefulLifeMinimum" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PropertyPlantAndEquipmentUsefulLifeMinimum" xml:lang="en-US" id="label_PropertyPlantAndEquipmentUsefulLifeMinimum">Property and equipment useful life, minimum (in years)</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="ResearchAndDevelopmentExpense" xlink:title="ResearchAndDevelopmentExpense"/>
    <label xlink:type="resource" xlink:label="label_ResearchAndDevelopmentExpense_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ResearchAndDevelopmentExpense" xml:lang="en-US" id="label_ResearchAndDevelopmentExpense_2">Research and Development Expense</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ResearchAndDevelopmentExpense" xlink:to="label_ResearchAndDevelopmentExpense_2" xlink:title="label: ResearchAndDevelopmentExpense to label_ResearchAndDevelopmentExpense"/>
    <label xlink:type="resource" xlink:label="label_ResearchAndDevelopmentExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ResearchAndDevelopmentExpense" xml:lang="en-US" id="label_ResearchAndDevelopmentExpense">Research and development expenses</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ResearchAndDevelopmentExpense" xlink:to="label_ResearchAndDevelopmentExpense" xlink:title="label: ResearchAndDevelopmentExpense to label_ResearchAndDevelopmentExpense"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AvailableForSaleSecuritiesTextBlock" xlink:label="AvailableForSaleSecuritiesTextBlock" xlink:title="AvailableForSaleSecuritiesTextBlock"/>
    <label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AvailableForSaleSecuritiesTextBlock" xml:lang="en-US" id="label_AvailableForSaleSecuritiesTextBlock">Marketable Securities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecuritiesTextBlock" xlink:to="label_AvailableForSaleSecuritiesTextBlock" xlink:title="label: AvailableForSaleSecuritiesTextBlock to label_AvailableForSaleSecuritiesTextBlock"/>
    <label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AvailableForSaleSecuritiesTextBlock" xml:lang="en-US" id="label_AvailableForSaleSecuritiesTextBlock_2">Available-for-sale Securities [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecuritiesTextBlock" xlink:to="label_AvailableForSaleSecuritiesTextBlock_2" xlink:title="label: AvailableForSaleSecuritiesTextBlock to label_AvailableForSaleSecuritiesTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" xlink:label="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" xlink:title="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue"/>
    <label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" xml:lang="en-US" id="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue_2">Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" xlink:to="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue_2" xlink:title="label: AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue to label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue"/>
    <label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" xml:lang="en-US" id="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue">Fair Value, Less than 12 months</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" xlink:to="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" xlink:title="label: AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue to label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue" xlink:label="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue" xlink:title="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue"/>
    <label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue" xml:lang="en-US" id="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue_2">Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PropertySubjectToOrAvailableForOperatingLeaseDomain" xlink:label="PropertySubjectToOrAvailableForOperatingLeaseDomain" xlink:title="PropertySubjectToOrAvailableForOperatingLeaseDomain"/>
    <label xlink:type="resource" xlink:label="label_PropertySubjectToOrAvailableForOperatingLeaseDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PropertySubjectToOrAvailableForOperatingLeaseDomain" xml:lang="en-US" id="label_PropertySubjectToOrAvailableForOperatingLeaseDomain">Property Subject to or Available for Operating Lease [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertySubjectToOrAvailableForOperatingLeaseDomain" xlink:to="label_PropertySubjectToOrAvailableForOperatingLeaseDomain" xlink:title="label: PropertySubjectToOrAvailableForOperatingLeaseDomain to label_PropertySubjectToOrAvailableForOperatingLeaseDomain"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems" xlink:label="PropertySubjectToOrAvailableForOperatingLeaseLineItems" xlink:title="PropertySubjectToOrAvailableForOperatingLeaseLineItems"/>
    <label xlink:type="resource" xlink:label="label_PropertySubjectToOrAvailableForOperatingLeaseLineItems_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PropertySubjectToOrAvailableForOperatingLeaseLineItems" xml:lang="en-US" id="label_PropertySubjectToOrAvailableForOperatingLeaseLineItems_2">Property Subject to or Available for Operating Lease [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertySubjectToOrAvailableForOperatingLeaseLineItems" xlink:to="label_PropertySubjectToOrAvailableForOperatingLeaseLineItems_2" xlink:title="label: PropertySubjectToOrAvailableForOperatingLeaseLineItems to label_PropertySubjectToOrAvailableForOperatingLeaseLineItems"/>
    <label xlink:type="resource" xlink:label="label_PropertySubjectToOrAvailableForOperatingLeaseLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PropertySubjectToOrAvailableForOperatingLeaseLineItems" xml:lang="en-US" id="label_PropertySubjectToOrAvailableForOperatingLeaseLineItems">Operating lease</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertySubjectToOrAvailableForOperatingLeaseLineItems" xlink:to="label_PropertySubjectToOrAvailableForOperatingLeaseLineItems" xlink:title="label: PropertySubjectToOrAvailableForOperatingLeaseLineItems to label_PropertySubjectToOrAvailableForOperatingLeaseLineItems"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PropertySubjectToOperatingLeaseMember" xlink:label="PropertySubjectToOperatingLeaseMember" xlink:title="PropertySubjectToOperatingLeaseMember"/>
    <label xlink:type="resource" xlink:label="label_PropertySubjectToOperatingLeaseMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PropertySubjectToOperatingLeaseMember" xml:lang="en-US" id="label_PropertySubjectToOperatingLeaseMember">Kendall Square Lease</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertySubjectToOperatingLeaseMember" xlink:to="label_PropertySubjectToOperatingLeaseMember" xlink:title="label: PropertySubjectToOperatingLeaseMember to label_PropertySubjectToOperatingLeaseMember"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember" xlink:label="EstimateOfFairValueFairValueDisclosureMember" xlink:title="EstimateOfFairValueFairValueDisclosureMember"/>
    <label xlink:type="resource" xlink:label="label_EstimateOfFairValueFairValueDisclosureMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EstimateOfFairValueFairValueDisclosureMember" xml:lang="en-US" id="label_EstimateOfFairValueFairValueDisclosureMember">Fair Value Measurements Total</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EstimateOfFairValueFairValueDisclosureMember" xlink:to="label_EstimateOfFairValueFairValueDisclosureMember" xlink:title="label: EstimateOfFairValueFairValueDisclosureMember to label_EstimateOfFairValueFairValueDisclosureMember"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="ScenarioUnspecifiedDomain" xlink:title="ScenarioUnspecifiedDomain"/>
    <label xlink:type="resource" xlink:label="label_ScenarioUnspecifiedDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScenarioUnspecifiedDomain" xml:lang="en-US" id="label_ScenarioUnspecifiedDomain">Scenario, Unspecified [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScenarioUnspecifiedDomain" xlink:to="label_ScenarioUnspecifiedDomain" xlink:title="label: ScenarioUnspecifiedDomain to label_ScenarioUnspecifiedDomain"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <label xlink:type="resource" xlink:label="label_StatementTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StatementTable" xml:lang="en-US" id="label_StatementTable">Statement [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementTable" xlink:to="label_StatementTable" xlink:title="label: StatementTable to label_StatementTable"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="StatementScenarioAxis" xlink:title="StatementScenarioAxis"/>
    <label xlink:type="resource" xlink:label="label_StatementScenarioAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StatementScenarioAxis" xml:lang="en-US" id="label_StatementScenarioAxis">Statement, Scenario [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementScenarioAxis" xlink:to="label_StatementScenarioAxis" xlink:title="label: StatementScenarioAxis to label_StatementScenarioAxis"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain" xlink:label="AntidilutiveSecuritiesNameDomain" xlink:title="AntidilutiveSecuritiesNameDomain"/>
    <label xlink:type="resource" xlink:label="label_AntidilutiveSecuritiesNameDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AntidilutiveSecuritiesNameDomain" xml:lang="en-US" id="label_AntidilutiveSecuritiesNameDomain">Antidilutive Securities, Name</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AntidilutiveSecuritiesNameDomain" xlink:to="label_AntidilutiveSecuritiesNameDomain" xlink:title="label: AntidilutiveSecuritiesNameDomain to label_AntidilutiveSecuritiesNameDomain"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_RestructuringReserveRollForward" xlink:label="RestructuringReserveRollForward" xlink:title="RestructuringReserveRollForward"/>
    <label xlink:type="resource" xlink:label="label_RestructuringReserveRollForward" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RestructuringReserveRollForward" xml:lang="en-US" id="label_RestructuringReserveRollForward">Reserve activities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestructuringReserveRollForward" xlink:to="label_RestructuringReserveRollForward" xlink:title="label: RestructuringReserveRollForward to label_RestructuringReserveRollForward"/>
    <label xlink:type="resource" xlink:label="label_RestructuringReserveRollForward_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RestructuringReserveRollForward" xml:lang="en-US" id="label_RestructuringReserveRollForward_2">Restructuring Reserve [Roll Forward]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestructuringReserveRollForward" xlink:to="label_RestructuringReserveRollForward_2" xlink:title="label: RestructuringReserveRollForward to label_RestructuringReserveRollForward"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <label xlink:type="resource" xlink:label="label_StatementLineItems_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StatementLineItems" xml:lang="en-US" id="label_StatementLineItems_2">Statement [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementLineItems" xlink:to="label_StatementLineItems_2" xlink:title="label: StatementLineItems to label_StatementLineItems"/>
    <label xlink:type="resource" xlink:label="label_StatementLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StatementLineItems" xml:lang="en-US" id="label_StatementLineItems">Statement</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementLineItems" xlink:to="label_StatementLineItems" xlink:title="label: StatementLineItems to label_StatementLineItems"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:label="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:title="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock"/>
    <label xlink:type="resource" xlink:label="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xml:lang="en-US" id="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_2">Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:to="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_2" xlink:title="label: FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock to label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock"/>
    <label xlink:type="resource" xlink:label="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xml:lang="en-US" id="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock">Reconciliation of financial liabilities measured at fair value using significant unobservable inputs</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:to="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:title="label: FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock to label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:label="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:title="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable"/>
    <label xlink:type="resource" xlink:label="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xml:lang="en-US" id="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable">Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:to="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:title="label: FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable to label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLiabilityTypesDomain" xlink:label="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLiabilityTypesDomain" xlink:title="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLiabilityTypesDomain"/>
    <label xlink:type="resource" xlink:label="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLiabilityTypesDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLiabilityTypesDomain" xml:lang="en-US" id="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLiabilityTypesDomain">Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Liability Types</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLiabilityTypesDomain" xlink:to="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLiabilityTypesDomain" xlink:title="label: FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLiabilityTypesDomain to label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLiabilityTypesDomain"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityTypeAxis" xlink:label="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityTypeAxis" xlink:title="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityTypeAxis"/>
    <label xlink:type="resource" xlink:label="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityTypeAxis" xml:lang="en-US" id="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityTypeAxis">Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, by Liability Type</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityTypeAxis" xlink:to="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityTypeAxis" xlink:title="label: FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityTypeAxis to label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityTypeAxis"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:label="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:title="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems"/>
    <label xlink:type="resource" xlink:label="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xml:lang="en-US" id="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_2">Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:to="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_2" xlink:title="label: FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems to label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems"/>
    <label xlink:type="resource" xlink:label="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xml:lang="en-US" id="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems">Fair Value, Financial Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:to="label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:title="label: FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems to label_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityValue" xlink:label="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityValue" xlink:title="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityValue"/>
    <label xlink:type="resource" xlink:label="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityValue_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityValue" xml:lang="en-US" id="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityValue_3">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityValue" xlink:to="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityValue_3" xlink:title="label: FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityValue to label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityValue"/>
    <label xlink:type="resource" xlink:label="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityValue" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:title="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityValue" xml:lang="en-US" id="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityValue">Balance, at beginning of period</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityValue" xlink:to="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityValue" xlink:title="label: FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityValue to label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityValue"/>
    <label xlink:type="resource" xlink:label="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityValue_2" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:title="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityValue" xml:lang="en-US" id="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityValue_2">Balance, at ending of period</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityValue" xlink:to="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityValue_2" xlink:title="label: FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityValue to label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityValue"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="FairValueInputsLevel1Member" xlink:title="FairValueInputsLevel1Member"/>
    <label xlink:type="resource" xlink:label="label_FairValueInputsLevel1Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueInputsLevel1Member" xml:lang="en-US" id="label_FairValueInputsLevel1Member">Fair Value Hierarchy Level 1</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueInputsLevel1Member" xlink:to="label_FairValueInputsLevel1Member" xlink:title="label: FairValueInputsLevel1Member to label_FairValueInputsLevel1Member"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="FairValueInputsLevel2Member" xlink:title="FairValueInputsLevel2Member"/>
    <label xlink:type="resource" xlink:label="label_FairValueInputsLevel2Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueInputsLevel2Member" xml:lang="en-US" id="label_FairValueInputsLevel2Member">Fair Value Hierarchy Level 2</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueInputsLevel2Member" xlink:to="label_FairValueInputsLevel2Member" xlink:title="label: FairValueInputsLevel2Member to label_FairValueInputsLevel2Member"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="FairValueInputsLevel3Member" xlink:title="FairValueInputsLevel3Member"/>
    <label xlink:type="resource" xlink:label="label_FairValueInputsLevel3Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueInputsLevel3Member" xml:lang="en-US" id="label_FairValueInputsLevel3Member">Fair Value Hierarchy Level 3</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_FairValueDisclosuresTextBlock" xlink:label="FairValueDisclosuresTextBlock" xlink:title="FairValueDisclosuresTextBlock"/>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueDisclosuresTextBlock" xlink:to="label_FairValueDisclosuresTextBlock" xlink:title="label: FairValueDisclosuresTextBlock to label_FairValueDisclosuresTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_QuarterlyFinancialInformationTextBlock" xlink:label="QuarterlyFinancialInformationTextBlock" xlink:title="QuarterlyFinancialInformationTextBlock"/>
    <label xlink:type="resource" xlink:label="label_QuarterlyFinancialInformationTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_QuarterlyFinancialInformationTextBlock" xml:lang="en-US" id="label_QuarterlyFinancialInformationTextBlock">Quarterly Financial Information [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="QuarterlyFinancialInformationTextBlock" xlink:to="label_QuarterlyFinancialInformationTextBlock" xlink:title="label: QuarterlyFinancialInformationTextBlock to label_QuarterlyFinancialInformationTextBlock"/>
    <label xlink:type="resource" xlink:label="label_QuarterlyFinancialInformationTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_QuarterlyFinancialInformationTextBlock" xml:lang="en-US" id="label_QuarterlyFinancialInformationTextBlock_2">Quarterly Financial Data (unaudited)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="QuarterlyFinancialInformationTextBlock" xlink:to="label_QuarterlyFinancialInformationTextBlock_2" xlink:title="label: QuarterlyFinancialInformationTextBlock to label_QuarterlyFinancialInformationTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_CashAndCashEquivalentsMember" xlink:label="CashAndCashEquivalentsMember" xlink:title="CashAndCashEquivalentsMember"/>
    <label xlink:type="resource" xlink:label="label_CashAndCashEquivalentsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CashAndCashEquivalentsMember" xml:lang="en-US" id="label_CashAndCashEquivalentsMember">Total cash and cash equivalents</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_InternalRevenueServiceIRSMember" xlink:label="InternalRevenueServiceIRSMember" xlink:title="InternalRevenueServiceIRSMember"/>
    <label xlink:type="resource" xlink:label="label_InternalRevenueServiceIRSMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InternalRevenueServiceIRSMember" xml:lang="en-US" id="label_InternalRevenueServiceIRSMember">Federal</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InternalRevenueServiceIRSMember" xlink:to="label_InternalRevenueServiceIRSMember" xlink:title="label: InternalRevenueServiceIRSMember to label_InternalRevenueServiceIRSMember"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:label="IncreaseDecreaseInStockholdersEquityRollForward" xlink:title="IncreaseDecreaseInStockholdersEquityRollForward"/>
    <label xlink:type="resource" xlink:label="label_IncreaseDecreaseInStockholdersEquityRollForward" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncreaseDecreaseInStockholdersEquityRollForward" xml:lang="en-US" id="label_IncreaseDecreaseInStockholdersEquityRollForward">Stockholders' Equity and Comprehensive Loss</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="label_IncreaseDecreaseInStockholdersEquityRollForward" xlink:title="label: IncreaseDecreaseInStockholdersEquityRollForward to label_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <label xlink:type="resource" xlink:label="label_IncreaseDecreaseInStockholdersEquityRollForward_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncreaseDecreaseInStockholdersEquityRollForward" xml:lang="en-US" id="label_IncreaseDecreaseInStockholdersEquityRollForward_2">Increase (Decrease) in Stockholders' Equity</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="label_IncreaseDecreaseInStockholdersEquityRollForward_2" xlink:title="label: IncreaseDecreaseInStockholdersEquityRollForward to label_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_StockholdersEquityPeriodIncreaseDecrease" xlink:label="StockholdersEquityPeriodIncreaseDecrease" xlink:title="StockholdersEquityPeriodIncreaseDecrease"/>
    <label xlink:type="resource" xlink:label="label_StockholdersEquityPeriodIncreaseDecrease" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockholdersEquityPeriodIncreaseDecrease" xml:lang="en-US" id="label_StockholdersEquityPeriodIncreaseDecrease">Stockholders' Equity, Period Increase (Decrease)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquityPeriodIncreaseDecrease" xlink:to="label_StockholdersEquityPeriodIncreaseDecrease" xlink:title="label: StockholdersEquityPeriodIncreaseDecrease to label_StockholdersEquityPeriodIncreaseDecrease"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear" xlink:label="FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear" xlink:title="FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear"/>
    <label xlink:type="resource" xlink:label="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear" xml:lang="en-US" id="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear_2">Future Minimum Sublease Rentals, Sale Leaseback Transactions, within One Year</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear" xlink:to="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear_2" xlink:title="label: FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear to label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear"/>
    <label xlink:type="resource" xlink:label="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear" xml:lang="en-US" id="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear">2011</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear" xlink:to="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear" xlink:title="label: FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear to label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinTwoYears" xlink:label="FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinTwoYears" xlink:title="FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinTwoYears"/>
    <label xlink:type="resource" xlink:label="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinTwoYears_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinTwoYears" xml:lang="en-US" id="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinTwoYears_2">Future Minimum Sublease Rentals, Sale Leaseback Transactions, within Two Years</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinTwoYears" xlink:to="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinTwoYears_2" xlink:title="label: FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinTwoYears to label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinTwoYears"/>
    <label xlink:type="resource" xlink:label="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinTwoYears" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinTwoYears" xml:lang="en-US" id="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinTwoYears">2012</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinTwoYears" xlink:to="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinTwoYears" xlink:title="label: FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinTwoYears to label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinTwoYears"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinThreeYears" xlink:label="FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinThreeYears" xlink:title="FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinThreeYears"/>
    <label xlink:type="resource" xlink:label="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinThreeYears_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinThreeYears" xml:lang="en-US" id="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinThreeYears_2">Future Minimum Sublease Rentals, Sale Leaseback Transactions, within Three Years</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinThreeYears" xlink:to="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinThreeYears_2" xlink:title="label: FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinThreeYears to label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinThreeYears"/>
    <label xlink:type="resource" xlink:label="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinThreeYears" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinThreeYears" xml:lang="en-US" id="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinThreeYears">2013</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinThreeYears" xlink:to="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinThreeYears" xlink:title="label: FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinThreeYears to label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinThreeYears"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears" xlink:label="FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears" xlink:title="FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears"/>
    <label xlink:type="resource" xlink:label="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears" xml:lang="en-US" id="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears_2">Future Minimum Sublease Rentals, Sale Leaseback Transactions, within Four Years</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears" xlink:to="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears_2" xlink:title="label: FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears to label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears"/>
    <label xlink:type="resource" xlink:label="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears" xml:lang="en-US" id="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears">2014</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears" xlink:to="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears" xlink:title="label: FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears to label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears" xlink:label="FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears" xlink:title="FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears"/>
    <label xlink:type="resource" xlink:label="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears" xml:lang="en-US" id="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears_2">Future Minimum Sublease Rentals, Sale Leaseback Transactions, within Five Years</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears" xlink:to="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears_2" xlink:title="label: FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears to label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears"/>
    <label xlink:type="resource" xlink:label="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears" xml:lang="en-US" id="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears">2015</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears" xlink:to="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears" xlink:title="label: FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears to label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsThereafter" xlink:label="FutureMinimumSubleaseRentalsSaleLeasebackTransactionsThereafter" xlink:title="FutureMinimumSubleaseRentalsSaleLeasebackTransactionsThereafter"/>
    <label xlink:type="resource" xlink:label="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsThereafter_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsThereafter" xml:lang="en-US" id="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsThereafter_2">Future Minimum Sublease Rentals, Sale Leaseback Transactions, Thereafter</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FutureMinimumSubleaseRentalsSaleLeasebackTransactionsThereafter" xlink:to="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsThereafter_2" xlink:title="label: FutureMinimumSubleaseRentalsSaleLeasebackTransactionsThereafter to label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsThereafter"/>
    <label xlink:type="resource" xlink:label="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsThereafter" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsThereafter" xml:lang="en-US" id="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsThereafter">Thereafter</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactions" xlink:label="FutureMinimumSubleaseRentalsSaleLeasebackTransactions" xlink:title="FutureMinimumSubleaseRentalsSaleLeasebackTransactions"/>
    <label xlink:type="resource" xlink:label="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactions_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactions" xml:lang="en-US" id="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactions_2">Future Minimum Sublease Rentals, Sale Leaseback Transactions</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FutureMinimumSubleaseRentalsSaleLeasebackTransactions" xlink:to="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactions_2" xlink:title="label: FutureMinimumSubleaseRentalsSaleLeasebackTransactions to label_FutureMinimumSubleaseRentalsSaleLeasebackTransactions"/>
    <label xlink:type="resource" xlink:label="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactions" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactions" xml:lang="en-US" id="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactions">Total minimum sublease income</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_IncreaseDecreaseInDeferredIncomeTaxes" xlink:label="IncreaseDecreaseInDeferredIncomeTaxes" xlink:title="IncreaseDecreaseInDeferredIncomeTaxes"/>
    <label xlink:type="resource" xlink:label="label_IncreaseDecreaseInDeferredIncomeTaxes_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncreaseDecreaseInDeferredIncomeTaxes" xml:lang="en-US" id="label_IncreaseDecreaseInDeferredIncomeTaxes_2">Increase (Decrease) in Deferred Income Taxes</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInDeferredIncomeTaxes" xlink:to="label_IncreaseDecreaseInDeferredIncomeTaxes_2" xlink:title="label: IncreaseDecreaseInDeferredIncomeTaxes to label_IncreaseDecreaseInDeferredIncomeTaxes"/>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityComponentDomain" xlink:to="label_EquityComponentDomain" xlink:title="label: EquityComponentDomain to label_EquityComponentDomain"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit" xlink:label="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit" xlink:title="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit" xml:lang="en-US" id="label_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit_2">Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredCompensationShareBasedPaymentsMember" xlink:label="DeferredCompensationShareBasedPaymentsMember" xlink:title="DeferredCompensationShareBasedPaymentsMember"/>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="EmployeeStockOptionMember" xlink:title="EmployeeStockOptionMember"/>
    <label xlink:type="resource" xlink:label="label_EmployeeStockOptionMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EmployeeStockOptionMember" xml:lang="en-US" id="label_EmployeeStockOptionMember">Stock options.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EmployeeStockOptionMember" xlink:to="label_EmployeeStockOptionMember" xlink:title="label: EmployeeStockOptionMember to label_EmployeeStockOptionMember"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciple" xlink:label="IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciple" xlink:title="IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciple"/>
    <label xlink:type="resource" xlink:label="label_IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciple_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciple" xml:lang="en-US" id="label_IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciple">Income (Loss) before Cumulative Effect of Change in Accounting Principle</label>
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    <label xlink:type="resource" xlink:label="label_IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciple" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciple" xml:lang="en-US" id="label_IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciple_2">Loss before cumulative effect of a change in accounting principle</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciplePerBasicShare" xlink:label="IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciplePerBasicShare" xlink:title="IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciplePerBasicShare"/>
    <label xlink:type="resource" xlink:label="label_IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciplePerBasicShare_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciplePerBasicShare" xml:lang="en-US" id="label_IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciplePerBasicShare">Income (Loss) before Cumulative Effect of Change in Accounting Principle, Per Basic Share</label>
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    <label xlink:type="resource" xlink:label="label_IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciplePerBasicShare" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciplePerBasicShare" xml:lang="en-US" id="label_IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciplePerBasicShare_2">Basic loss per common share before cumulative effect of a change in accounting principle (in dollars per share)</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciplePerDilutedShare" xlink:label="IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciplePerDilutedShare" xlink:title="IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciplePerDilutedShare"/>
    <label xlink:type="resource" xlink:label="label_IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciplePerDilutedShare_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciplePerDilutedShare" xml:lang="en-US" id="label_IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciplePerDilutedShare">Income (Loss) before Cumulative Effect of Change in Accounting Principle, Per Diluted Share</label>
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    <label xlink:type="resource" xlink:label="label_IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciplePerDilutedShare" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciplePerDilutedShare" xml:lang="en-US" id="label_IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciplePerDilutedShare_2">Diluted loss per common share before cumulative effect of a change in accounting principle (in dollars per share)</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:label="StockIssuedDuringPeriodValueNewIssues" xlink:title="StockIssuedDuringPeriodValueNewIssues"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodValueNewIssues_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockIssuedDuringPeriodValueNewIssues" xml:lang="en-US" id="label_StockIssuedDuringPeriodValueNewIssues">Stock Issued During Period, Value, New Issues</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodValueNewIssues" xlink:to="label_StockIssuedDuringPeriodValueNewIssues_2" xlink:title="label: StockIssuedDuringPeriodValueNewIssues to label_StockIssuedDuringPeriodValueNewIssues"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodValueNewIssues" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StockIssuedDuringPeriodValueNewIssues" xml:lang="en-US" id="label_StockIssuedDuringPeriodValueNewIssues_2">Equity offerings</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodValueNewIssues" xlink:to="label_StockIssuedDuringPeriodValueNewIssues" xlink:title="label: StockIssuedDuringPeriodValueNewIssues to label_StockIssuedDuringPeriodValueNewIssues"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation" xlink:label="StockIssuedDuringPeriodValueShareBasedCompensation" xlink:title="StockIssuedDuringPeriodValueShareBasedCompensation"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodValueShareBasedCompensation_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockIssuedDuringPeriodValueShareBasedCompensation" xml:lang="en-US" id="label_StockIssuedDuringPeriodValueShareBasedCompensation">Stock Issued During Period, Value, Share-based Compensation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodValueShareBasedCompensation" xlink:to="label_StockIssuedDuringPeriodValueShareBasedCompensation_2" xlink:title="label: StockIssuedDuringPeriodValueShareBasedCompensation to label_StockIssuedDuringPeriodValueShareBasedCompensation"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodValueShareBasedCompensation" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StockIssuedDuringPeriodValueShareBasedCompensation" xml:lang="en-US" id="label_StockIssuedDuringPeriodValueShareBasedCompensation_2">Stock-based compensation expense</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodValueShareBasedCompensation" xlink:to="label_StockIssuedDuringPeriodValueShareBasedCompensation" xlink:title="label: StockIssuedDuringPeriodValueShareBasedCompensation to label_StockIssuedDuringPeriodValueShareBasedCompensation"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueAcquisitions" xlink:label="StockIssuedDuringPeriodValueAcquisitions" xlink:title="StockIssuedDuringPeriodValueAcquisitions"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodValueAcquisitions" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StockIssuedDuringPeriodValueAcquisitions" xml:lang="en-US" id="label_StockIssuedDuringPeriodValueAcquisitions">Acquisition of ViroChem</label>
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    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodValueAcquisitions_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockIssuedDuringPeriodValueAcquisitions" xml:lang="en-US" id="label_StockIssuedDuringPeriodValueAcquisitions_2">Stock Issued During Period, Value, Acquisitions</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised" xlink:label="StockIssuedDuringPeriodValueStockOptionsExercised" xlink:title="StockIssuedDuringPeriodValueStockOptionsExercised"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodValueStockOptionsExercised_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockIssuedDuringPeriodValueStockOptionsExercised" xml:lang="en-US" id="label_StockIssuedDuringPeriodValueStockOptionsExercised">Stock Issued During Period, Value, Stock Options Exercised</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodValueStockOptionsExercised" xlink:to="label_StockIssuedDuringPeriodValueStockOptionsExercised_2" xlink:title="label: StockIssuedDuringPeriodValueStockOptionsExercised to label_StockIssuedDuringPeriodValueStockOptionsExercised"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodValueStockOptionsExercised" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StockIssuedDuringPeriodValueStockOptionsExercised" xml:lang="en-US" id="label_StockIssuedDuringPeriodValueStockOptionsExercised_2">Benefit plans</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodValueStockOptionsExercised" xlink:to="label_StockIssuedDuringPeriodValueStockOptionsExercised" xlink:title="label: StockIssuedDuringPeriodValueStockOptionsExercised to label_StockIssuedDuringPeriodValueStockOptionsExercised"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities" xlink:label="StockIssuedDuringPeriodValueConversionOfConvertibleSecurities" xlink:title="StockIssuedDuringPeriodValueConversionOfConvertibleSecurities"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities" xml:lang="en-US" id="label_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities_2">Stock Issued During Period, Value, Conversion of Convertible Securities</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="IncreaseDecreaseInOperatingCapitalAbstract" xlink:title="IncreaseDecreaseInOperatingCapitalAbstract"/>
    <label xlink:type="resource" xlink:label="label_IncreaseDecreaseInOperatingCapitalAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncreaseDecreaseInOperatingCapitalAbstract" xml:lang="en-US" id="label_IncreaseDecreaseInOperatingCapitalAbstract_2">Increase (Decrease) in Operating Capital [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="label_IncreaseDecreaseInOperatingCapitalAbstract_2" xlink:title="label: IncreaseDecreaseInOperatingCapitalAbstract to label_IncreaseDecreaseInOperatingCapitalAbstract"/>
    <label xlink:type="resource" xlink:label="label_IncreaseDecreaseInOperatingCapitalAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncreaseDecreaseInOperatingCapitalAbstract" xml:lang="en-US" id="label_IncreaseDecreaseInOperatingCapitalAbstract">Changes in operating assets and liabilities:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="label_IncreaseDecreaseInOperatingCapitalAbstract" xlink:title="label: IncreaseDecreaseInOperatingCapitalAbstract to label_IncreaseDecreaseInOperatingCapitalAbstract"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="LiabilitiesCurrentAbstract" xlink:title="LiabilitiesCurrentAbstract"/>
    <label xlink:type="resource" xlink:label="label_LiabilitiesCurrentAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LiabilitiesCurrentAbstract" xml:lang="en-US" id="label_LiabilitiesCurrentAbstract_2">Liabilities, Current [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesCurrentAbstract" xlink:to="label_LiabilitiesCurrentAbstract_2" xlink:title="label: LiabilitiesCurrentAbstract to label_LiabilitiesCurrentAbstract"/>
    <label xlink:type="resource" xlink:label="label_LiabilitiesCurrentAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LiabilitiesCurrentAbstract" xml:lang="en-US" id="label_LiabilitiesCurrentAbstract">Current liabilities:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesCurrentAbstract" xlink:to="label_LiabilitiesCurrentAbstract" xlink:title="label: LiabilitiesCurrentAbstract to label_LiabilitiesCurrentAbstract"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="LiabilitiesAndStockholdersEquityAbstract" xlink:title="LiabilitiesAndStockholdersEquityAbstract"/>
    <label xlink:type="resource" xlink:label="label_LiabilitiesAndStockholdersEquityAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LiabilitiesAndStockholdersEquityAbstract" xml:lang="en-US" id="label_LiabilitiesAndStockholdersEquityAbstract_2">Liabilities and Stockholders' Equity [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesAndStockholdersEquityAbstract" xlink:to="label_LiabilitiesAndStockholdersEquityAbstract_2" xlink:title="label: LiabilitiesAndStockholdersEquityAbstract to label_LiabilitiesAndStockholdersEquityAbstract"/>
    <label xlink:type="resource" xlink:label="label_LiabilitiesAndStockholdersEquityAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LiabilitiesAndStockholdersEquityAbstract" xml:lang="en-US" id="label_LiabilitiesAndStockholdersEquityAbstract">Liabilities and Stockholders' Equity</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesAndStockholdersEquityAbstract" xlink:to="label_LiabilitiesAndStockholdersEquityAbstract" xlink:title="label: LiabilitiesAndStockholdersEquityAbstract to label_LiabilitiesAndStockholdersEquityAbstract"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:title="NetCashProvidedByUsedInFinancingActivitiesAbstract"/>
    <label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInFinancingActivitiesAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NetCashProvidedByUsedInFinancingActivitiesAbstract" xml:lang="en-US" id="label_NetCashProvidedByUsedInFinancingActivitiesAbstract_2">Net Cash Provided by (Used in) Financing Activities [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="label_NetCashProvidedByUsedInFinancingActivitiesAbstract_2" xlink:title="label: NetCashProvidedByUsedInFinancingActivitiesAbstract to label_NetCashProvidedByUsedInFinancingActivitiesAbstract"/>
    <label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NetCashProvidedByUsedInFinancingActivitiesAbstract" xml:lang="en-US" id="label_NetCashProvidedByUsedInFinancingActivitiesAbstract">Cash flows from financing activities:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="label_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:title="label: NetCashProvidedByUsedInFinancingActivitiesAbstract to label_NetCashProvidedByUsedInFinancingActivitiesAbstract"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:title="NetCashProvidedByUsedInInvestingActivitiesAbstract"/>
    <label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInInvestingActivitiesAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NetCashProvidedByUsedInInvestingActivitiesAbstract" xml:lang="en-US" id="label_NetCashProvidedByUsedInInvestingActivitiesAbstract_2">Net Cash Provided by (Used in) Investing Activities [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="label_NetCashProvidedByUsedInInvestingActivitiesAbstract_2" xlink:title="label: NetCashProvidedByUsedInInvestingActivitiesAbstract to label_NetCashProvidedByUsedInInvestingActivitiesAbstract"/>
    <label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NetCashProvidedByUsedInInvestingActivitiesAbstract" xml:lang="en-US" id="label_NetCashProvidedByUsedInInvestingActivitiesAbstract">Cash flows from investing activities:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="label_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:title="label: NetCashProvidedByUsedInInvestingActivitiesAbstract to label_NetCashProvidedByUsedInInvestingActivitiesAbstract"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_RevenuesAbstract" xlink:label="RevenuesAbstract" xlink:title="RevenuesAbstract"/>
    <label xlink:type="resource" xlink:label="label_RevenuesAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RevenuesAbstract" xml:lang="en-US" id="label_RevenuesAbstract_2">Revenues [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevenuesAbstract" xlink:to="label_RevenuesAbstract_2" xlink:title="label: RevenuesAbstract to label_RevenuesAbstract"/>
    <label xlink:type="resource" xlink:label="label_RevenuesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RevenuesAbstract" xml:lang="en-US" id="label_RevenuesAbstract">Revenues:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevenuesAbstract" xlink:to="label_RevenuesAbstract" xlink:title="label: RevenuesAbstract to label_RevenuesAbstract"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:label="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:title="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract"/>
    <label xlink:type="resource" xlink:label="label_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xml:lang="en-US" id="label_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_2">Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:to="label_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_2" xlink:title="label: StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract to label_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract"/>
    <label xlink:type="resource" xlink:label="label_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xml:lang="en-US" id="label_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract">Stockholders' equity:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:to="label_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:title="label: StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract to label_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_SupplementalCashFlowInformationAbstract" xlink:label="SupplementalCashFlowInformationAbstract" xlink:title="SupplementalCashFlowInformationAbstract"/>
    <label xlink:type="resource" xlink:label="label_SupplementalCashFlowInformationAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SupplementalCashFlowInformationAbstract" xml:lang="en-US" id="label_SupplementalCashFlowInformationAbstract_2">Supplemental Cash Flow Information [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SupplementalCashFlowInformationAbstract" xlink:to="label_SupplementalCashFlowInformationAbstract_2" xlink:title="label: SupplementalCashFlowInformationAbstract to label_SupplementalCashFlowInformationAbstract"/>
    <label xlink:type="resource" xlink:label="label_SupplementalCashFlowInformationAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SupplementalCashFlowInformationAbstract" xml:lang="en-US" id="label_SupplementalCashFlowInformationAbstract">Supplemental disclosure of cash flow information:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SupplementalCashFlowInformationAbstract" xlink:to="label_SupplementalCashFlowInformationAbstract" xlink:title="label: SupplementalCashFlowInformationAbstract to label_SupplementalCashFlowInformationAbstract"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:label="AssetsCurrentAbstract" xlink:title="AssetsCurrentAbstract"/>
    <label xlink:type="resource" xlink:label="label_AssetsCurrentAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AssetsCurrentAbstract" xml:lang="en-US" id="label_AssetsCurrentAbstract_2">Assets, Current [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsCurrentAbstract" xlink:to="label_AssetsCurrentAbstract_2" xlink:title="label: AssetsCurrentAbstract to label_AssetsCurrentAbstract"/>
    <label xlink:type="resource" xlink:label="label_AssetsCurrentAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AssetsCurrentAbstract" xml:lang="en-US" id="label_AssetsCurrentAbstract">Current assets:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsCurrentAbstract" xlink:to="label_AssetsCurrentAbstract" xlink:title="label: AssetsCurrentAbstract to label_AssetsCurrentAbstract"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="AssetsAbstract" xlink:title="AssetsAbstract"/>
    <label xlink:type="resource" xlink:label="label_AssetsAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AssetsAbstract" xml:lang="en-US" id="label_AssetsAbstract_2">Assets [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsAbstract" xlink:to="label_AssetsAbstract_2" xlink:title="label: AssetsAbstract to label_AssetsAbstract"/>
    <label xlink:type="resource" xlink:label="label_AssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AssetsAbstract" xml:lang="en-US" id="label_AssetsAbstract">Assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsAbstract" xlink:to="label_AssetsAbstract" xlink:title="label: AssetsAbstract to label_AssetsAbstract"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_CostsAndExpensesAbstract" xlink:label="CostsAndExpensesAbstract" xlink:title="CostsAndExpensesAbstract"/>
    <label xlink:type="resource" xlink:label="label_CostsAndExpensesAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CostsAndExpensesAbstract" xml:lang="en-US" id="label_CostsAndExpensesAbstract_2">Costs and Expenses [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CostsAndExpensesAbstract" xlink:to="label_CostsAndExpensesAbstract_2" xlink:title="label: CostsAndExpensesAbstract to label_CostsAndExpensesAbstract"/>
    <label xlink:type="resource" xlink:label="label_CostsAndExpensesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CostsAndExpensesAbstract" xml:lang="en-US" id="label_CostsAndExpensesAbstract">Costs and expenses:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CostsAndExpensesAbstract" xlink:to="label_CostsAndExpensesAbstract" xlink:title="label: CostsAndExpensesAbstract to label_CostsAndExpensesAbstract"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:title="AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract"/>
    <label xlink:type="resource" xlink:label="label_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xml:lang="en-US" id="label_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_2">Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="label_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_2" xlink:title="label: AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract to label_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract"/>
    <label xlink:type="resource" xlink:label="label_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xml:lang="en-US" id="label_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract">Adjustments to reconcile net loss to net cash used in operating activities:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="label_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:title="label: AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract to label_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_PrepaidExpenseAndOtherAssetsCurrent" xlink:label="PrepaidExpenseAndOtherAssetsCurrent" xlink:title="PrepaidExpenseAndOtherAssetsCurrent"/>
    <label xlink:type="resource" xlink:label="label_PrepaidExpenseAndOtherAssetsCurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PrepaidExpenseAndOtherAssetsCurrent" xml:lang="en-US" id="label_PrepaidExpenseAndOtherAssetsCurrent">Prepaid expenses and other current assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PrepaidExpenseAndOtherAssetsCurrent" xlink:to="label_PrepaidExpenseAndOtherAssetsCurrent" xlink:title="label: PrepaidExpenseAndOtherAssetsCurrent to label_PrepaidExpenseAndOtherAssetsCurrent"/>
    <label xlink:type="resource" xlink:label="label_PrepaidExpenseAndOtherAssetsCurrent_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PrepaidExpenseAndOtherAssetsCurrent" xml:lang="en-US" id="label_PrepaidExpenseAndOtherAssetsCurrent_2">Prepaid Expense and Other Assets, Current</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PrepaidExpenseAndOtherAssetsCurrent" xlink:to="label_PrepaidExpenseAndOtherAssetsCurrent_2" xlink:title="label: PrepaidExpenseAndOtherAssetsCurrent to label_PrepaidExpenseAndOtherAssetsCurrent"/>
    <label xlink:type="resource" xlink:label="label_PrepaidExpenseAndOtherAssetsCurrent_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_PrepaidExpenseAndOtherAssetsCurrent" xml:lang="en-US" id="label_PrepaidExpenseAndOtherAssetsCurrent_3">Sum of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer and it includes other current assets.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PrepaidExpenseAndOtherAssetsCurrent" xlink:to="label_PrepaidExpenseAndOtherAssetsCurrent_3" xlink:title="label: PrepaidExpenseAndOtherAssetsCurrent to label_PrepaidExpenseAndOtherAssetsCurrent"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeRevenues" xlink:label="CollaborativeRevenues" xlink:title="CollaborativeRevenues"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeRevenues" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeRevenues" xml:lang="en-US" id="label_CollaborativeRevenues">Collaborative Revenues</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeRevenues" xlink:to="label_CollaborativeRevenues" xlink:title="label: CollaborativeRevenues to label_CollaborativeRevenues"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeRevenues_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CollaborativeRevenues" xml:lang="en-US" id="label_CollaborativeRevenues_2">Collaborative revenues</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeRevenues" xlink:to="label_CollaborativeRevenues_2" xlink:title="label: CollaborativeRevenues to label_CollaborativeRevenues"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeRevenues_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaborativeRevenues" xml:lang="en-US" id="label_CollaborativeRevenues_3">The aggregate revenue from collaborative revenues. It includes the revenues earned by the entity from nonrefundable, up-front license fees; net reimbursements of research and/or development efforts, including manufacturing services; and milestone payments.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeRevenues" xlink:to="label_CollaborativeRevenues_3" xlink:title="label: CollaborativeRevenues to label_CollaborativeRevenues"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeRevenues_4" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_CollaborativeRevenues" xml:lang="en-US" id="label_CollaborativeRevenues_4">Total collaborative revenues attributable to the collaboration</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeRevenues" xlink:to="label_CollaborativeRevenues_4" xlink:title="label: CollaborativeRevenues to label_CollaborativeRevenues"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_DocumentAndEntityInformationAbstract" xlink:label="DocumentAndEntityInformationAbstract" xlink:title="DocumentAndEntityInformationAbstract"/>
    <label xlink:type="resource" xlink:label="label_DocumentAndEntityInformationAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DocumentAndEntityInformationAbstract" xml:lang="en-US" id="label_DocumentAndEntityInformationAbstract">Document and Entity Information</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DocumentAndEntityInformationAbstract" xlink:to="label_DocumentAndEntityInformationAbstract" xlink:title="label: DocumentAndEntityInformationAbstract to label_DocumentAndEntityInformationAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_SignificantRevenueByArrangementDisclosureTextBlock" xlink:label="SignificantRevenueByArrangementDisclosureTextBlock" xlink:title="SignificantRevenueByArrangementDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_SignificantRevenueByArrangementDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SignificantRevenueByArrangementDisclosureTextBlock" xml:lang="en-US" id="label_SignificantRevenueByArrangementDisclosureTextBlock">Significant Revenue by Arrangement Disclosure [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SignificantRevenueByArrangementDisclosureTextBlock" xlink:to="label_SignificantRevenueByArrangementDisclosureTextBlock" xlink:title="label: SignificantRevenueByArrangementDisclosureTextBlock to label_SignificantRevenueByArrangementDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_SignificantRevenueByArrangementDisclosureTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SignificantRevenueByArrangementDisclosureTextBlock" xml:lang="en-US" id="label_SignificantRevenueByArrangementDisclosureTextBlock_2">Significant Revenue Arrangements</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SignificantRevenueByArrangementDisclosureTextBlock" xlink:to="label_SignificantRevenueByArrangementDisclosureTextBlock_2" xlink:title="label: SignificantRevenueByArrangementDisclosureTextBlock to label_SignificantRevenueByArrangementDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_SignificantRevenueByArrangementDisclosureTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_SignificantRevenueByArrangementDisclosureTextBlock" xml:lang="en-US" id="label_SignificantRevenueByArrangementDisclosureTextBlock_3">Description of type of arrangements of Revenue. It includes n amortized portion of the up-front payment and net reimbursements from the client.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SignificantRevenueByArrangementDisclosureTextBlock" xlink:to="label_SignificantRevenueByArrangementDisclosureTextBlock_3" xlink:title="label: SignificantRevenueByArrangementDisclosureTextBlock to label_SignificantRevenueByArrangementDisclosureTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CommonStockOfferingsDisclosureTextBlock" xlink:label="CommonStockOfferingsDisclosureTextBlock" xlink:title="CommonStockOfferingsDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_CommonStockOfferingsDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CommonStockOfferingsDisclosureTextBlock" xml:lang="en-US" id="label_CommonStockOfferingsDisclosureTextBlock">Common Stock Offerings Disclosure [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockOfferingsDisclosureTextBlock" xlink:to="label_CommonStockOfferingsDisclosureTextBlock" xlink:title="label: CommonStockOfferingsDisclosureTextBlock to label_CommonStockOfferingsDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_CommonStockOfferingsDisclosureTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CommonStockOfferingsDisclosureTextBlock" xml:lang="en-US" id="label_CommonStockOfferingsDisclosureTextBlock_2">Common Stock Offerings</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockOfferingsDisclosureTextBlock" xlink:to="label_CommonStockOfferingsDisclosureTextBlock_2" xlink:title="label: CommonStockOfferingsDisclosureTextBlock to label_CommonStockOfferingsDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_CommonStockOfferingsDisclosureTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CommonStockOfferingsDisclosureTextBlock" xml:lang="en-US" id="label_CommonStockOfferingsDisclosureTextBlock_3">Disclosure related to common stock offerings, including proceeds net of the underwriting discount and other expenses.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockOfferingsDisclosureTextBlock" xlink:to="label_CommonStockOfferingsDisclosureTextBlock_3" xlink:title="label: CommonStockOfferingsDisclosureTextBlock to label_CommonStockOfferingsDisclosureTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_IncreaseDecreaseInAccruedExpensesAndOtherLiabilities" xlink:label="IncreaseDecreaseInAccruedExpensesAndOtherLiabilities" xlink:title="IncreaseDecreaseInAccruedExpensesAndOtherLiabilities"/>
    <label xlink:type="resource" xlink:label="label_IncreaseDecreaseInAccruedExpensesAndOtherLiabilities_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncreaseDecreaseInAccruedExpensesAndOtherLiabilities" xml:lang="en-US" id="label_IncreaseDecreaseInAccruedExpensesAndOtherLiabilities_2">Increase (Decrease) in Accrued Expenses and Other Liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInAccruedExpensesAndOtherLiabilities" xlink:to="label_IncreaseDecreaseInAccruedExpensesAndOtherLiabilities_2" xlink:title="label: IncreaseDecreaseInAccruedExpensesAndOtherLiabilities to label_IncreaseDecreaseInAccruedExpensesAndOtherLiabilities"/>
    <label xlink:type="resource" xlink:label="label_IncreaseDecreaseInAccruedExpensesAndOtherLiabilities_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncreaseDecreaseInAccruedExpensesAndOtherLiabilities" xml:lang="en-US" id="label_IncreaseDecreaseInAccruedExpensesAndOtherLiabilities_3">Accrued expenses and other liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInAccruedExpensesAndOtherLiabilities" xlink:to="label_IncreaseDecreaseInAccruedExpensesAndOtherLiabilities_3" xlink:title="label: IncreaseDecreaseInAccruedExpensesAndOtherLiabilities to label_IncreaseDecreaseInAccruedExpensesAndOtherLiabilities"/>
    <label xlink:type="resource" xlink:label="label_IncreaseDecreaseInAccruedExpensesAndOtherLiabilities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_IncreaseDecreaseInAccruedExpensesAndOtherLiabilities" xml:lang="en-US" id="label_IncreaseDecreaseInAccruedExpensesAndOtherLiabilities">The net change during the reporting period in the aggregate amount of other liabilities and expenses incurred but not yet paid.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInAccruedExpensesAndOtherLiabilities" xlink:to="label_IncreaseDecreaseInAccruedExpensesAndOtherLiabilities" xlink:title="label: IncreaseDecreaseInAccruedExpensesAndOtherLiabilities to label_IncreaseDecreaseInAccruedExpensesAndOtherLiabilities"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_RealizedGainLossOnSaleWarrants" xlink:label="RealizedGainLossOnSaleWarrants" xlink:title="RealizedGainLossOnSaleWarrants"/>
    <label xlink:type="resource" xlink:label="label_RealizedGainLossOnSaleWarrants" xlink:role="http://xbrl.us/us-gaap/role/label/negated" xlink:title="label_RealizedGainLossOnSaleWarrants" xml:lang="en-US" id="label_RealizedGainLossOnSaleWarrants">Realized gain on warrants</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RealizedGainLossOnSaleWarrants" xlink:to="label_RealizedGainLossOnSaleWarrants" xlink:title="label: RealizedGainLossOnSaleWarrants to label_RealizedGainLossOnSaleWarrants"/>
    <label xlink:type="resource" xlink:label="label_RealizedGainLossOnSaleWarrants_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RealizedGainLossOnSaleWarrants" xml:lang="en-US" id="label_RealizedGainLossOnSaleWarrants_2">Realized Gain (Loss) on Sale Warrants</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RealizedGainLossOnSaleWarrants" xlink:to="label_RealizedGainLossOnSaleWarrants_2" xlink:title="label: RealizedGainLossOnSaleWarrants to label_RealizedGainLossOnSaleWarrants"/>
    <label xlink:type="resource" xlink:label="label_RealizedGainLossOnSaleWarrants_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_RealizedGainLossOnSaleWarrants" xml:lang="en-US" id="label_RealizedGainLossOnSaleWarrants_3">This element represents the realized gain (loss) on sale warrants during the period.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RealizedGainLossOnSaleWarrants" xlink:to="label_RealizedGainLossOnSaleWarrants_3" xlink:title="label: RealizedGainLossOnSaleWarrants to label_RealizedGainLossOnSaleWarrants"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ProceedsFromSaleOfWarrants" xlink:label="ProceedsFromSaleOfWarrants" xlink:title="ProceedsFromSaleOfWarrants"/>
    <label xlink:type="resource" xlink:label="label_ProceedsFromSaleOfWarrants" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ProceedsFromSaleOfWarrants" xml:lang="en-US" id="label_ProceedsFromSaleOfWarrants">Proceeds from Sale of Warrants</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromSaleOfWarrants" xlink:to="label_ProceedsFromSaleOfWarrants" xlink:title="label: ProceedsFromSaleOfWarrants to label_ProceedsFromSaleOfWarrants"/>
    <label xlink:type="resource" xlink:label="label_ProceedsFromSaleOfWarrants_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ProceedsFromSaleOfWarrants" xml:lang="en-US" id="label_ProceedsFromSaleOfWarrants_2">Sale of warrants</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromSaleOfWarrants" xlink:to="label_ProceedsFromSaleOfWarrants_2" xlink:title="label: ProceedsFromSaleOfWarrants to label_ProceedsFromSaleOfWarrants"/>
    <label xlink:type="resource" xlink:label="label_ProceedsFromSaleOfWarrants_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ProceedsFromSaleOfWarrants" xml:lang="en-US" id="label_ProceedsFromSaleOfWarrants_3">This element represents the sale of warrants during the period.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromSaleOfWarrants" xlink:to="label_ProceedsFromSaleOfWarrants_3" xlink:title="label: ProceedsFromSaleOfWarrants to label_ProceedsFromSaleOfWarrants"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_IssuancesOfCommonStockAbstract" xlink:label="IssuancesOfCommonStockAbstract" xlink:title="IssuancesOfCommonStockAbstract"/>
    <label xlink:type="resource" xlink:label="label_IssuancesOfCommonStockAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IssuancesOfCommonStockAbstract" xml:lang="en-US" id="label_IssuancesOfCommonStockAbstract">Issuances of common stock:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IssuancesOfCommonStockAbstract" xlink:to="label_IssuancesOfCommonStockAbstract" xlink:title="label: IssuancesOfCommonStockAbstract to label_IssuancesOfCommonStockAbstract"/>
    <label xlink:type="resource" xlink:label="label_IssuancesOfCommonStockAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IssuancesOfCommonStockAbstract" xml:lang="en-US" id="label_IssuancesOfCommonStockAbstract_2">Issuances of Common Stock [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IssuancesOfCommonStockAbstract" xlink:to="label_IssuancesOfCommonStockAbstract_2" xlink:title="label: IssuancesOfCommonStockAbstract to label_IssuancesOfCommonStockAbstract"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="StatementOfFinancialPositionAbstract" xlink:title="StatementOfFinancialPositionAbstract"/>
    <label xlink:type="resource" xlink:label="label_StatementOfFinancialPositionAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StatementOfFinancialPositionAbstract" xml:lang="en-US" id="label_StatementOfFinancialPositionAbstract">Condensed Consolidated Balance Sheets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementOfFinancialPositionAbstract" xlink:to="label_StatementOfFinancialPositionAbstract" xlink:title="label: StatementOfFinancialPositionAbstract to label_StatementOfFinancialPositionAbstract"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="StatementOfCashFlowsAbstract" xlink:title="StatementOfCashFlowsAbstract"/>
    <label xlink:type="resource" xlink:label="label_StatementOfCashFlowsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StatementOfCashFlowsAbstract" xml:lang="en-US" id="label_StatementOfCashFlowsAbstract">Condensed Consolidated Statements of Cash Flows</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementOfCashFlowsAbstract" xlink:to="label_StatementOfCashFlowsAbstract" xlink:title="label: StatementOfCashFlowsAbstract to label_StatementOfCashFlowsAbstract"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="IncomeStatementAbstract" xlink:title="IncomeStatementAbstract"/>
    <label xlink:type="resource" xlink:label="label_IncomeStatementAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncomeStatementAbstract" xml:lang="en-US" id="label_IncomeStatementAbstract">Condensed Consolidated Statements of Operations</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeStatementAbstract" xlink:to="label_IncomeStatementAbstract" xlink:title="label: IncomeStatementAbstract to label_IncomeStatementAbstract"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_StatementOfStockholdersEquityAbstract" xlink:label="StatementOfStockholdersEquityAbstract" xlink:title="StatementOfStockholdersEquityAbstract"/>
    <label xlink:type="resource" xlink:label="label_StatementOfStockholdersEquityAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StatementOfStockholdersEquityAbstract" xml:lang="en-US" id="label_StatementOfStockholdersEquityAbstract">Consolidated Statements of Stockholders' Equity and Comprehensive Loss</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementOfStockholdersEquityAbstract" xlink:to="label_StatementOfStockholdersEquityAbstract" xlink:title="label: StatementOfStockholdersEquityAbstract to label_StatementOfStockholdersEquityAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_StockIssuedDuringPeriodExchangeForConvertibleSubordinatedNotes" xlink:label="StockIssuedDuringPeriodExchangeForConvertibleSubordinatedNotes" xlink:title="StockIssuedDuringPeriodExchangeForConvertibleSubordinatedNotes"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodExchangeForConvertibleSubordinatedNotes" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StockIssuedDuringPeriodExchangeForConvertibleSubordinatedNotes" xml:lang="en-US" id="label_StockIssuedDuringPeriodExchangeForConvertibleSubordinatedNotes">Convertible senior subordinated notes (due 2013) exchanges</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodExchangeForConvertibleSubordinatedNotes" xlink:to="label_StockIssuedDuringPeriodExchangeForConvertibleSubordinatedNotes" xlink:title="label: StockIssuedDuringPeriodExchangeForConvertibleSubordinatedNotes to label_StockIssuedDuringPeriodExchangeForConvertibleSubordinatedNotes"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodExchangeForConvertibleSubordinatedNotes_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockIssuedDuringPeriodExchangeForConvertibleSubordinatedNotes" xml:lang="en-US" id="label_StockIssuedDuringPeriodExchangeForConvertibleSubordinatedNotes_2">Stock Issued during Period Exchange for Convertible Subordinated Notes</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodExchangeForConvertibleSubordinatedNotes" xlink:to="label_StockIssuedDuringPeriodExchangeForConvertibleSubordinatedNotes_2" xlink:title="label: StockIssuedDuringPeriodExchangeForConvertibleSubordinatedNotes to label_StockIssuedDuringPeriodExchangeForConvertibleSubordinatedNotes"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodExchangeForConvertibleSubordinatedNotes_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_StockIssuedDuringPeriodExchangeForConvertibleSubordinatedNotes" xml:lang="en-US" id="label_StockIssuedDuringPeriodExchangeForConvertibleSubordinatedNotes_3">Value of stock issued during the period in exchange for convertible subordinated notes.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodExchangeForConvertibleSubordinatedNotes" xlink:to="label_StockIssuedDuringPeriodExchangeForConvertibleSubordinatedNotes_3" xlink:title="label: StockIssuedDuringPeriodExchangeForConvertibleSubordinatedNotes to label_StockIssuedDuringPeriodExchangeForConvertibleSubordinatedNotes"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_StockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes" xlink:label="StockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes" xlink:title="StockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes" xml:lang="en-US" id="label_StockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes">Convertible senior subordinated notes (due 2013) exchanges (in shares)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes" xlink:to="label_StockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes" xlink:title="label: StockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes to label_StockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes" xml:lang="en-US" id="label_StockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes_2">Stock Issued During Period Shares Exchange for Convertible Subordinated Notes</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes" xlink:to="label_StockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes_2" xlink:title="label: StockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes to label_StockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_StockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes" xml:lang="en-US" id="label_StockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes_3">The number of shares of stock issued during the period in exchange for convertible subordinated notes.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes" xlink:to="label_StockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes_3" xlink:title="label: StockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes to label_StockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureTextBlock" xlink:label="SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureTextBlock" xlink:title="SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureTextBlock" xml:lang="en-US" id="label_SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureTextBlock">Sale of HIV Protease Inhibitor Royalty Stream Disclosure [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureTextBlock" xlink:to="label_SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureTextBlock" xlink:title="label: SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureTextBlock to label_SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureTextBlock" xml:lang="en-US" id="label_SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureTextBlock_2">Sale of HIV Protease Inhibitor Royalty Stream</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureTextBlock" xlink:to="label_SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureTextBlock_2" xlink:title="label: SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureTextBlock to label_SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureTextBlock" xml:lang="en-US" id="label_SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureTextBlock_3">Disclosure related to the sale of the HIV protease inhibitor royalty stream.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureTextBlock" xlink:to="label_SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureTextBlock_3" xlink:title="label: SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureTextBlock to label_SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_DebtConversionOrExchangeConvertedOrExchangedInstrumentAmount" xlink:label="DebtConversionOrExchangeConvertedOrExchangedInstrumentAmount" xlink:title="DebtConversionOrExchangeConvertedOrExchangedInstrumentAmount"/>
    <label xlink:type="resource" xlink:label="label_DebtConversionOrExchangeConvertedOrExchangedInstrumentAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtConversionOrExchangeConvertedOrExchangedInstrumentAmount" xml:lang="en-US" id="label_DebtConversionOrExchangeConvertedOrExchangedInstrumentAmount">Conversion of convertible senior subordinated notes (due 2013) for common stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtConversionOrExchangeConvertedOrExchangedInstrumentAmount" xlink:to="label_DebtConversionOrExchangeConvertedOrExchangedInstrumentAmount" xlink:title="label: DebtConversionOrExchangeConvertedOrExchangedInstrumentAmount to label_DebtConversionOrExchangeConvertedOrExchangedInstrumentAmount"/>
    <label xlink:type="resource" xlink:label="label_DebtConversionOrExchangeConvertedOrExchangedInstrumentAmount_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DebtConversionOrExchangeConvertedOrExchangedInstrumentAmount" xml:lang="en-US" id="label_DebtConversionOrExchangeConvertedOrExchangedInstrumentAmount_2">The value of the financial instrument(s) that the original debt is being converted or exchanged into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtConversionOrExchangeConvertedOrExchangedInstrumentAmount" xlink:to="label_DebtConversionOrExchangeConvertedOrExchangedInstrumentAmount_2" xlink:title="label: DebtConversionOrExchangeConvertedOrExchangedInstrumentAmount to label_DebtConversionOrExchangeConvertedOrExchangedInstrumentAmount"/>
    <label xlink:type="resource" xlink:label="label_DebtConversionOrExchangeConvertedOrExchangedInstrumentAmount_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtConversionOrExchangeConvertedOrExchangedInstrumentAmount" xml:lang="en-US" id="label_DebtConversionOrExchangeConvertedOrExchangedInstrumentAmount_3">Debt Conversion or Exchange, Converted or Exchanged Instrument Amount</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtConversionOrExchangeConvertedOrExchangedInstrumentAmount" xlink:to="label_DebtConversionOrExchangeConvertedOrExchangedInstrumentAmount_3" xlink:title="label: DebtConversionOrExchangeConvertedOrExchangedInstrumentAmount to label_DebtConversionOrExchangeConvertedOrExchangedInstrumentAmount"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_DebtConversionOrExchangeAccruedInterestAmount" xlink:label="DebtConversionOrExchangeAccruedInterestAmount" xlink:title="DebtConversionOrExchangeAccruedInterestAmount"/>
    <label xlink:type="resource" xlink:label="label_DebtConversionOrExchangeAccruedInterestAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtConversionOrExchangeAccruedInterestAmount" xml:lang="en-US" id="label_DebtConversionOrExchangeAccruedInterestAmount">Accrued interest offset to additional paid-in capital on conversion of convertible senior subordinated notes (due 2013)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtConversionOrExchangeAccruedInterestAmount" xlink:to="label_DebtConversionOrExchangeAccruedInterestAmount" xlink:title="label: DebtConversionOrExchangeAccruedInterestAmount to label_DebtConversionOrExchangeAccruedInterestAmount"/>
    <label xlink:type="resource" xlink:label="label_DebtConversionOrExchangeAccruedInterestAmount_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DebtConversionOrExchangeAccruedInterestAmount" xml:lang="en-US" id="label_DebtConversionOrExchangeAccruedInterestAmount_2">Accrued interest offset to additional paid-in capital on conversion/exchange of convertible notes.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtConversionOrExchangeAccruedInterestAmount" xlink:to="label_DebtConversionOrExchangeAccruedInterestAmount_2" xlink:title="label: DebtConversionOrExchangeAccruedInterestAmount to label_DebtConversionOrExchangeAccruedInterestAmount"/>
    <label xlink:type="resource" xlink:label="label_DebtConversionOrExchangeAccruedInterestAmount_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtConversionOrExchangeAccruedInterestAmount" xml:lang="en-US" id="label_DebtConversionOrExchangeAccruedInterestAmount_3">Debt Conversion or Exchange, Accrued Interest Amount</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtConversionOrExchangeAccruedInterestAmount" xlink:to="label_DebtConversionOrExchangeAccruedInterestAmount_3" xlink:title="label: DebtConversionOrExchangeAccruedInterestAmount to label_DebtConversionOrExchangeAccruedInterestAmount"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfEquityAndDebtIssuedAndDebtConversionsAndExchangesTextBlock" xlink:label="ScheduleOfEquityAndDebtIssuedAndDebtConversionsAndExchangesTextBlock" xlink:title="ScheduleOfEquityAndDebtIssuedAndDebtConversionsAndExchangesTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfEquityAndDebtIssuedAndDebtConversionsAndExchangesTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfEquityAndDebtIssuedAndDebtConversionsAndExchangesTextBlock" xml:lang="en-US" id="label_ScheduleOfEquityAndDebtIssuedAndDebtConversionsAndExchangesTextBlock">Schedule of Equity and Debt Issued, and Debt Conversions and Exchanges [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfEquityAndDebtIssuedAndDebtConversionsAndExchangesTextBlock" xlink:to="label_ScheduleOfEquityAndDebtIssuedAndDebtConversionsAndExchangesTextBlock" xlink:title="label: ScheduleOfEquityAndDebtIssuedAndDebtConversionsAndExchangesTextBlock to label_ScheduleOfEquityAndDebtIssuedAndDebtConversionsAndExchangesTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfEquityAndDebtIssuedAndDebtConversionsAndExchangesTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfEquityAndDebtIssuedAndDebtConversionsAndExchangesTextBlock" xml:lang="en-US" id="label_ScheduleOfEquityAndDebtIssuedAndDebtConversionsAndExchangesTextBlock_2">This block of text may include all information related to the issuance of equity and debt securities, including certain information on an original debt issue that has been converted or exchanged in a noncash (or part noncash) transaction during the accounting period.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfEquityAndDebtIssuedAndDebtConversionsAndExchangesTextBlock" xlink:to="label_ScheduleOfEquityAndDebtIssuedAndDebtConversionsAndExchangesTextBlock_2" xlink:title="label: ScheduleOfEquityAndDebtIssuedAndDebtConversionsAndExchangesTextBlock to label_ScheduleOfEquityAndDebtIssuedAndDebtConversionsAndExchangesTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfEquityAndDebtIssuedAndDebtConversionsAndExchangesTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfEquityAndDebtIssuedAndDebtConversionsAndExchangesTextBlock" xml:lang="en-US" id="label_ScheduleOfEquityAndDebtIssuedAndDebtConversionsAndExchangesTextBlock_3">Equity and Debt Offerings and Debt Exchanges and Conversions</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfEquityAndDebtIssuedAndDebtConversionsAndExchangesTextBlock" xlink:to="label_ScheduleOfEquityAndDebtIssuedAndDebtConversionsAndExchangesTextBlock_3" xlink:title="label: ScheduleOfEquityAndDebtIssuedAndDebtConversionsAndExchangesTextBlock to label_ScheduleOfEquityAndDebtIssuedAndDebtConversionsAndExchangesTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_FinancingTransactionDisclosureTextBlock" xlink:label="FinancingTransactionDisclosureTextBlock" xlink:title="FinancingTransactionDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_FinancingTransactionDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FinancingTransactionDisclosureTextBlock" xml:lang="en-US" id="label_FinancingTransactionDisclosureTextBlock">September 2009 Financial Transactions</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FinancingTransactionDisclosureTextBlock" xlink:to="label_FinancingTransactionDisclosureTextBlock" xlink:title="label: FinancingTransactionDisclosureTextBlock to label_FinancingTransactionDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_FinancingTransactionDisclosureTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_FinancingTransactionDisclosureTextBlock" xml:lang="en-US" id="label_FinancingTransactionDisclosureTextBlock_2">Disclosure of significant financing transactions, including issuance of debt and sale of potential future revenue stream.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FinancingTransactionDisclosureTextBlock" xlink:to="label_FinancingTransactionDisclosureTextBlock_2" xlink:title="label: FinancingTransactionDisclosureTextBlock to label_FinancingTransactionDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_FinancingTransactionDisclosureTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FinancingTransactionDisclosureTextBlock" xml:lang="en-US" id="label_FinancingTransactionDisclosureTextBlock_3">Financing Transaction Disclosure [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FinancingTransactionDisclosureTextBlock" xlink:to="label_FinancingTransactionDisclosureTextBlock_3" xlink:title="label: FinancingTransactionDisclosureTextBlock to label_FinancingTransactionDisclosureTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_BusinessCombinationAcquisitionRelatedCostsAndSeveranceCosts" xlink:label="BusinessCombinationAcquisitionRelatedCostsAndSeveranceCosts" xlink:title="BusinessCombinationAcquisitionRelatedCostsAndSeveranceCosts"/>
    <label xlink:type="resource" xlink:label="label_BusinessCombinationAcquisitionRelatedCostsAndSeveranceCosts" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BusinessCombinationAcquisitionRelatedCostsAndSeveranceCosts" xml:lang="en-US" id="label_BusinessCombinationAcquisitionRelatedCostsAndSeveranceCosts">Business Combination Acquisition Related Costs and Severance Costs</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessCombinationAcquisitionRelatedCostsAndSeveranceCosts" xlink:to="label_BusinessCombinationAcquisitionRelatedCostsAndSeveranceCosts" xlink:title="label: BusinessCombinationAcquisitionRelatedCostsAndSeveranceCosts to label_BusinessCombinationAcquisitionRelatedCostsAndSeveranceCosts"/>
    <label xlink:type="resource" xlink:label="label_BusinessCombinationAcquisitionRelatedCostsAndSeveranceCosts_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_BusinessCombinationAcquisitionRelatedCostsAndSeveranceCosts" xml:lang="en-US" id="label_BusinessCombinationAcquisitionRelatedCostsAndSeveranceCosts_2">Acquisition-related expenses</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessCombinationAcquisitionRelatedCostsAndSeveranceCosts" xlink:to="label_BusinessCombinationAcquisitionRelatedCostsAndSeveranceCosts_2" xlink:title="label: BusinessCombinationAcquisitionRelatedCostsAndSeveranceCosts to label_BusinessCombinationAcquisitionRelatedCostsAndSeveranceCosts"/>
    <label xlink:type="resource" xlink:label="label_BusinessCombinationAcquisitionRelatedCostsAndSeveranceCosts_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_BusinessCombinationAcquisitionRelatedCostsAndSeveranceCosts" xml:lang="en-US" id="label_BusinessCombinationAcquisitionRelatedCostsAndSeveranceCosts_3">This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. This element also includes the charge against earnings in the period for known and estimated costs of termination benefits provided to current employees that are involuntarily terminated under a benefit arrangement associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding costs or losses pertaining to an entity newly acquired in a business combination or a discontinued operation as defined by generally accepted accounting principles and costs associated with one-time termination benefits.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessCombinationAcquisitionRelatedCostsAndSeveranceCosts" xlink:to="label_BusinessCombinationAcquisitionRelatedCostsAndSeveranceCosts_3" xlink:title="label: BusinessCombinationAcquisitionRelatedCostsAndSeveranceCosts to label_BusinessCombinationAcquisitionRelatedCostsAndSeveranceCosts"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_BasisOfPresentationDisclosureAbstract" xlink:label="BasisOfPresentationDisclosureAbstract" xlink:title="BasisOfPresentationDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_BasisOfPresentationDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BasisOfPresentationDisclosureAbstract" xml:lang="en-US" id="label_BasisOfPresentationDisclosureAbstract">Basis of Presentation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BasisOfPresentationDisclosureAbstract" xlink:to="label_BasisOfPresentationDisclosureAbstract" xlink:title="label: BasisOfPresentationDisclosureAbstract to label_BasisOfPresentationDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_AccountingPoliciesDisclosureAbstract" xlink:label="AccountingPoliciesDisclosureAbstract" xlink:title="AccountingPoliciesDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_AccountingPoliciesDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AccountingPoliciesDisclosureAbstract" xml:lang="en-US" id="label_AccountingPoliciesDisclosureAbstract">Accounting Policies</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccountingPoliciesDisclosureAbstract" xlink:to="label_AccountingPoliciesDisclosureAbstract" xlink:title="label: AccountingPoliciesDisclosureAbstract to label_AccountingPoliciesDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_StockBasedCompensationExpenseDisclosureAbstract" xlink:label="StockBasedCompensationExpenseDisclosureAbstract" xlink:title="StockBasedCompensationExpenseDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_StockBasedCompensationExpenseDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockBasedCompensationExpenseDisclosureAbstract" xml:lang="en-US" id="label_StockBasedCompensationExpenseDisclosureAbstract">Stock-based Compensation Expense</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockBasedCompensationExpenseDisclosureAbstract" xlink:to="label_StockBasedCompensationExpenseDisclosureAbstract" xlink:title="label: StockBasedCompensationExpenseDisclosureAbstract to label_StockBasedCompensationExpenseDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_MarketableSecuritiesDisclosureAbstract" xlink:label="MarketableSecuritiesDisclosureAbstract" xlink:title="MarketableSecuritiesDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_MarketableSecuritiesDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MarketableSecuritiesDisclosureAbstract" xml:lang="en-US" id="label_MarketableSecuritiesDisclosureAbstract">Marketable Securities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MarketableSecuritiesDisclosureAbstract" xlink:to="label_MarketableSecuritiesDisclosureAbstract" xlink:title="label: MarketableSecuritiesDisclosureAbstract to label_MarketableSecuritiesDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_FairValueOfFinancialInstrumentsDisclosureAbstract" xlink:label="FairValueOfFinancialInstrumentsDisclosureAbstract" xlink:title="FairValueOfFinancialInstrumentsDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_FairValueOfFinancialInstrumentsDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueOfFinancialInstrumentsDisclosureAbstract" xml:lang="en-US" id="label_FairValueOfFinancialInstrumentsDisclosureAbstract">Fair Value of Financial Instruments</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueOfFinancialInstrumentsDisclosureAbstract" xlink:to="label_FairValueOfFinancialInstrumentsDisclosureAbstract" xlink:title="label: FairValueOfFinancialInstrumentsDisclosureAbstract to label_FairValueOfFinancialInstrumentsDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ComprehensiveLossDisclosureAbstract" xlink:label="ComprehensiveLossDisclosureAbstract" xlink:title="ComprehensiveLossDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_ComprehensiveLossDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ComprehensiveLossDisclosureAbstract" xml:lang="en-US" id="label_ComprehensiveLossDisclosureAbstract">Comprehensive Loss</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ComprehensiveLossDisclosureAbstract" xlink:to="label_ComprehensiveLossDisclosureAbstract" xlink:title="label: ComprehensiveLossDisclosureAbstract to label_ComprehensiveLossDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_IncomeTaxesDisclosureAbstract" xlink:label="IncomeTaxesDisclosureAbstract" xlink:title="IncomeTaxesDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_IncomeTaxesDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncomeTaxesDisclosureAbstract" xml:lang="en-US" id="label_IncomeTaxesDisclosureAbstract">Income Taxes</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxesDisclosureAbstract" xlink:to="label_IncomeTaxesDisclosureAbstract" xlink:title="label: IncomeTaxesDisclosureAbstract to label_IncomeTaxesDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_RestructuringExpenseDisclosureAbstract" xlink:label="RestructuringExpenseDisclosureAbstract" xlink:title="RestructuringExpenseDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_RestructuringExpenseDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RestructuringExpenseDisclosureAbstract" xml:lang="en-US" id="label_RestructuringExpenseDisclosureAbstract">Restructuring Expense</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestructuringExpenseDisclosureAbstract" xlink:to="label_RestructuringExpenseDisclosureAbstract" xlink:title="label: RestructuringExpenseDisclosureAbstract to label_RestructuringExpenseDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_EquityAndDebtOfferingsAndDebtExchangesAndConversionsDisclosureAbstract" xlink:label="EquityAndDebtOfferingsAndDebtExchangesAndConversionsDisclosureAbstract" xlink:title="EquityAndDebtOfferingsAndDebtExchangesAndConversionsDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_EquityAndDebtOfferingsAndDebtExchangesAndConversionsDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EquityAndDebtOfferingsAndDebtExchangesAndConversionsDisclosureAbstract" xml:lang="en-US" id="label_EquityAndDebtOfferingsAndDebtExchangesAndConversionsDisclosureAbstract">Equity and Debt Offerings and Debt Exchanges and Conversions</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityAndDebtOfferingsAndDebtExchangesAndConversionsDisclosureAbstract" xlink:to="label_EquityAndDebtOfferingsAndDebtExchangesAndConversionsDisclosureAbstract" xlink:title="label: EquityAndDebtOfferingsAndDebtExchangesAndConversionsDisclosureAbstract to label_EquityAndDebtOfferingsAndDebtExchangesAndConversionsDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementsDisclosureAbstract" xlink:label="CollaborativeArrangementsDisclosureAbstract" xlink:title="CollaborativeArrangementsDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementsDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementsDisclosureAbstract" xml:lang="en-US" id="label_CollaborativeArrangementsDisclosureAbstract">Collaborative Arrangements</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementsDisclosureAbstract" xlink:to="label_CollaborativeArrangementsDisclosureAbstract" xlink:title="label: CollaborativeArrangementsDisclosureAbstract to label_CollaborativeArrangementsDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementsDisclosureAbstract_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CollaborativeArrangementsDisclosureAbstract" xml:lang="en-US" id="label_CollaborativeArrangementsDisclosureAbstract_2">Collaborative Arrangements</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementsDisclosureAbstract" xlink:to="label_CollaborativeArrangementsDisclosureAbstract_2" xlink:title="label: CollaborativeArrangementsDisclosureAbstract to label_CollaborativeArrangementsDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_AcquisitionOfBusinessDisclosureAbstract" xlink:label="AcquisitionOfBusinessDisclosureAbstract" xlink:title="AcquisitionOfBusinessDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_AcquisitionOfBusinessDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AcquisitionOfBusinessDisclosureAbstract" xml:lang="en-US" id="label_AcquisitionOfBusinessDisclosureAbstract">Acquisition of ViroChem Pharma Inc.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AcquisitionOfBusinessDisclosureAbstract" xlink:to="label_AcquisitionOfBusinessDisclosureAbstract" xlink:title="label: AcquisitionOfBusinessDisclosureAbstract to label_AcquisitionOfBusinessDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_September2009FinancialTransactionsDisclosureAbstract" xlink:label="September2009FinancialTransactionsDisclosureAbstract" xlink:title="September2009FinancialTransactionsDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_September2009FinancialTransactionsDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_September2009FinancialTransactionsDisclosureAbstract" xml:lang="en-US" id="label_September2009FinancialTransactionsDisclosureAbstract">September 2009 Financial Transactions</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="September2009FinancialTransactionsDisclosureAbstract" xlink:to="label_September2009FinancialTransactionsDisclosureAbstract" xlink:title="label: September2009FinancialTransactionsDisclosureAbstract to label_September2009FinancialTransactionsDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureAbstract" xlink:label="SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureAbstract" xlink:title="SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureAbstract" xml:lang="en-US" id="label_SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureAbstract">Sale of HIV Protease Inhibitor Royalty Stream</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureAbstract" xlink:to="label_SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureAbstract" xlink:title="label: SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureAbstract to label_SaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_GuaranteesDisclosureAbstract" xlink:label="GuaranteesDisclosureAbstract" xlink:title="GuaranteesDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_GuaranteesDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_GuaranteesDisclosureAbstract" xml:lang="en-US" id="label_GuaranteesDisclosureAbstract">Guarantees</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GuaranteesDisclosureAbstract" xlink:to="label_GuaranteesDisclosureAbstract" xlink:title="label: GuaranteesDisclosureAbstract to label_GuaranteesDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ContingenciesDisclosureAbstract" xlink:label="ContingenciesDisclosureAbstract" xlink:title="ContingenciesDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_ContingenciesDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ContingenciesDisclosureAbstract" xml:lang="en-US" id="label_ContingenciesDisclosureAbstract">Contingencies</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ContingenciesDisclosureAbstract" xlink:to="label_ContingenciesDisclosureAbstract" xlink:title="label: ContingenciesDisclosureAbstract to label_ContingenciesDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CommonStockOfferingsDisclosureAbstract" xlink:label="CommonStockOfferingsDisclosureAbstract" xlink:title="CommonStockOfferingsDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_CommonStockOfferingsDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CommonStockOfferingsDisclosureAbstract" xml:lang="en-US" id="label_CommonStockOfferingsDisclosureAbstract">Common Stock Offerings</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockOfferingsDisclosureAbstract" xlink:to="label_CommonStockOfferingsDisclosureAbstract" xlink:title="label: CommonStockOfferingsDisclosureAbstract to label_CommonStockOfferingsDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_SignificantRevenueArrangementsDisclosureAbstract" xlink:label="SignificantRevenueArrangementsDisclosureAbstract" xlink:title="SignificantRevenueArrangementsDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_SignificantRevenueArrangementsDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SignificantRevenueArrangementsDisclosureAbstract" xml:lang="en-US" id="label_SignificantRevenueArrangementsDisclosureAbstract">Significant Revenue Arrangements</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SignificantRevenueArrangementsDisclosureAbstract" xlink:to="label_SignificantRevenueArrangementsDisclosureAbstract" xlink:title="label: SignificantRevenueArrangementsDisclosureAbstract to label_SignificantRevenueArrangementsDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_PreferredStockCommonStockAndEquityPlansDisclosureAbstract" xlink:label="PreferredStockCommonStockAndEquityPlansDisclosureAbstract" xlink:title="PreferredStockCommonStockAndEquityPlansDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_PreferredStockCommonStockAndEquityPlansDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PreferredStockCommonStockAndEquityPlansDisclosureAbstract" xml:lang="en-US" id="label_PreferredStockCommonStockAndEquityPlansDisclosureAbstract">Preferred Stock, Common Stock and Equity Plans</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PreferredStockCommonStockAndEquityPlansDisclosureAbstract" xlink:to="label_PreferredStockCommonStockAndEquityPlansDisclosureAbstract" xlink:title="label: PreferredStockCommonStockAndEquityPlansDisclosureAbstract to label_PreferredStockCommonStockAndEquityPlansDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_RestrictedCashDisclosureAbstract" xlink:label="RestrictedCashDisclosureAbstract" xlink:title="RestrictedCashDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_RestrictedCashDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RestrictedCashDisclosureAbstract" xml:lang="en-US" id="label_RestrictedCashDisclosureAbstract">Restricted Cash</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestrictedCashDisclosureAbstract" xlink:to="label_RestrictedCashDisclosureAbstract" xlink:title="label: RestrictedCashDisclosureAbstract to label_RestrictedCashDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_PropertyAndEquipmentDisclosureAbstract" xlink:label="PropertyAndEquipmentDisclosureAbstract" xlink:title="PropertyAndEquipmentDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_PropertyAndEquipmentDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PropertyAndEquipmentDisclosureAbstract" xml:lang="en-US" id="label_PropertyAndEquipmentDisclosureAbstract">Property and Equipment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyAndEquipmentDisclosureAbstract" xlink:to="label_PropertyAndEquipmentDisclosureAbstract" xlink:title="label: PropertyAndEquipmentDisclosureAbstract to label_PropertyAndEquipmentDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_AltusInvestmentDisclosureAbstract" xlink:label="AltusInvestmentDisclosureAbstract" xlink:title="AltusInvestmentDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_AltusInvestmentDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AltusInvestmentDisclosureAbstract" xml:lang="en-US" id="label_AltusInvestmentDisclosureAbstract">Altus Investment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AltusInvestmentDisclosureAbstract" xlink:to="label_AltusInvestmentDisclosureAbstract" xlink:title="label: AltusInvestmentDisclosureAbstract to label_AltusInvestmentDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_AccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsDisclosureAbstract" xlink:label="AccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsDisclosureAbstract" xlink:title="AccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_AccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsDisclosureAbstract" xml:lang="en-US" id="label_AccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsDisclosureAbstract">Accrued Expenses and Other Current Liabilities and Other Obligations</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsDisclosureAbstract" xlink:to="label_AccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsDisclosureAbstract" xlink:title="label: AccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsDisclosureAbstract to label_AccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CommitmentsDisclosureAbstract" xlink:label="CommitmentsDisclosureAbstract" xlink:title="CommitmentsDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_CommitmentsDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CommitmentsDisclosureAbstract" xml:lang="en-US" id="label_CommitmentsDisclosureAbstract">Commitments</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommitmentsDisclosureAbstract" xlink:to="label_CommitmentsDisclosureAbstract" xlink:title="label: CommitmentsDisclosureAbstract to label_CommitmentsDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ConvertibleSubordinatedNotesDue2015DisclosureAbstract" xlink:label="ConvertibleSubordinatedNotesDisclosureAbstract" xlink:title="ConvertibleSubordinatedNotesDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_ConvertibleSubordinatedNotesDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ConvertibleSubordinatedNotesDisclosureAbstract" xml:lang="en-US" id="label_ConvertibleSubordinatedNotesDisclosureAbstract">Convertible Senior Subordinated Notes due 2015</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleSubordinatedNotesDisclosureAbstract" xlink:to="label_ConvertibleSubordinatedNotesDisclosureAbstract" xlink:title="label: ConvertibleSubordinatedNotesDisclosureAbstract to label_ConvertibleSubordinatedNotesDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborationAndSaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureAbstract" xlink:label="CollaborationAndSaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureAbstract" xlink:title="CollaborationAndSaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_CollaborationAndSaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborationAndSaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureAbstract" xml:lang="en-US" id="label_CollaborationAndSaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureAbstract">GlaxoSmithKline plc Collaboration and Sale of HIV Protease Inhibitor Royalty Stream</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborationAndSaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureAbstract" xlink:to="label_CollaborationAndSaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureAbstract" xlink:title="label: CollaborationAndSaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureAbstract to label_CollaborationAndSaleOfHIVProteaseInhibitorRoyaltyStreamDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_EmployeeBenefitsDisclosureAbstract" xlink:label="EmployeeBenefitsDisclosureAbstract" xlink:title="EmployeeBenefitsDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_EmployeeBenefitsDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EmployeeBenefitsDisclosureAbstract" xml:lang="en-US" id="label_EmployeeBenefitsDisclosureAbstract">Employee Benefits</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EmployeeBenefitsDisclosureAbstract" xlink:to="label_EmployeeBenefitsDisclosureAbstract" xlink:title="label: EmployeeBenefitsDisclosureAbstract to label_EmployeeBenefitsDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_SubsequentEventDisclosureAbstract" xlink:label="SubsequentEventDisclosureAbstract" xlink:title="SubsequentEventDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_SubsequentEventDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SubsequentEventDisclosureAbstract" xml:lang="en-US" id="label_SubsequentEventDisclosureAbstract">Subsequent Event</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubsequentEventDisclosureAbstract" xlink:to="label_SubsequentEventDisclosureAbstract" xlink:title="label: SubsequentEventDisclosureAbstract to label_SubsequentEventDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_QuarterlyFinancialDataDisclosureAbstract" xlink:label="QuarterlyFinancialDataDisclosureAbstract" xlink:title="QuarterlyFinancialDataDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_QuarterlyFinancialDataDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_QuarterlyFinancialDataDisclosureAbstract" xml:lang="en-US" id="label_QuarterlyFinancialDataDisclosureAbstract">Quarterly Financial Data (unaudited)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="QuarterlyFinancialDataDisclosureAbstract" xlink:to="label_QuarterlyFinancialDataDisclosureAbstract" xlink:title="label: QuarterlyFinancialDataDisclosureAbstract to label_QuarterlyFinancialDataDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:label="OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:title="OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract"/>
    <label xlink:type="resource" xlink:label="label_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xml:lang="en-US" id="label_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract">Changes in other comprehensive loss:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:to="label_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:title="label: OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract to label_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract"/>
    <label xlink:type="resource" xlink:label="label_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xml:lang="en-US" id="label_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_2">Other Comprehensive Income (Loss), Net of Tax [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:to="label_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_2" xlink:title="label: OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract to label_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_LeasedFacilityArea" xlink:label="LeasedFacilityArea" xlink:title="LeasedFacilityArea"/>
    <label xlink:type="resource" xlink:label="label_LeasedFacilityArea" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LeasedFacilityArea" xml:lang="en-US" id="label_LeasedFacilityArea">Leased area (in square feet)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeasedFacilityArea" xlink:to="label_LeasedFacilityArea" xlink:title="label: LeasedFacilityArea to label_LeasedFacilityArea"/>
    <label xlink:type="resource" xlink:label="label_LeasedFacilityArea_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LeasedFacilityArea" xml:lang="en-US" id="label_LeasedFacilityArea_2">Leased Facility Area</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeasedFacilityArea" xlink:to="label_LeasedFacilityArea_2" xlink:title="label: LeasedFacilityArea to label_LeasedFacilityArea"/>
    <label xlink:type="resource" xlink:label="label_LeasedFacilityArea_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_LeasedFacilityArea" xml:lang="en-US" id="label_LeasedFacilityArea_3">Total area of space available to occupy at a specific site under a lease agreement that was initially vacated under the restructuring plan, stated in square feet.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeasedFacilityArea" xlink:to="label_LeasedFacilityArea_3" xlink:title="label: LeasedFacilityArea to label_LeasedFacilityArea"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_LeaseTerm" xlink:label="LeaseTerm" xlink:title="LeaseTerm"/>
    <label xlink:type="resource" xlink:label="label_LeaseTerm" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LeaseTerm" xml:lang="en-US" id="label_LeaseTerm">Lease Term</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeaseTerm" xlink:to="label_LeaseTerm" xlink:title="label: LeaseTerm to label_LeaseTerm"/>
    <label xlink:type="resource" xlink:label="label_LeaseTerm_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_LeaseTerm" xml:lang="en-US" id="label_LeaseTerm_2">Total length of time of a real estate lease, stated in years.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeaseTerm" xlink:to="label_LeaseTerm_2" xlink:title="label: LeaseTerm to label_LeaseTerm"/>
    <label xlink:type="resource" xlink:label="label_LeaseTerm_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LeaseTerm" xml:lang="en-US" id="label_LeaseTerm_3">Lease term (in years)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeaseTerm" xlink:to="label_LeaseTerm_3" xlink:title="label: LeaseTerm to label_LeaseTerm"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_OccupiedLeasedFacilityArea" xlink:label="OccupiedLeasedFacilityArea" xlink:title="OccupiedLeasedFacilityArea"/>
    <label xlink:type="resource" xlink:label="label_OccupiedLeasedFacilityArea" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OccupiedLeasedFacilityArea" xml:lang="en-US" id="label_OccupiedLeasedFacilityArea">Occupied Leased Facility Area</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OccupiedLeasedFacilityArea" xlink:to="label_OccupiedLeasedFacilityArea" xlink:title="label: OccupiedLeasedFacilityArea to label_OccupiedLeasedFacilityArea"/>
    <label xlink:type="resource" xlink:label="label_OccupiedLeasedFacilityArea_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_OccupiedLeasedFacilityArea" xml:lang="en-US" id="label_OccupiedLeasedFacilityArea_2">The portion of total leased area available at a specific site that is occupied by the Company for operations, stated in square feet.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OccupiedLeasedFacilityArea" xlink:to="label_OccupiedLeasedFacilityArea_2" xlink:title="label: OccupiedLeasedFacilityArea to label_OccupiedLeasedFacilityArea"/>
    <label xlink:type="resource" xlink:label="label_OccupiedLeasedFacilityArea_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OccupiedLeasedFacilityArea" xml:lang="en-US" id="label_OccupiedLeasedFacilityArea_3">Occupied leased area (in square feet)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OccupiedLeasedFacilityArea" xlink:to="label_OccupiedLeasedFacilityArea_3" xlink:title="label: OccupiedLeasedFacilityArea to label_OccupiedLeasedFacilityArea"/>
    <label xlink:type="resource" xlink:label="label_OccupiedLeasedFacilityArea_4" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_OccupiedLeasedFacilityArea" xml:lang="en-US" id="label_OccupiedLeasedFacilityArea_4">Office space used for operation (in square feet)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OccupiedLeasedFacilityArea" xlink:to="label_OccupiedLeasedFacilityArea_4" xlink:title="label: OccupiedLeasedFacilityArea to label_OccupiedLeasedFacilityArea"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_LeaseRestructuringLiabilityAccrualDiscountRate" xlink:label="LeaseRestructuringLiabilityAccrualDiscountRate" xlink:title="LeaseRestructuringLiabilityAccrualDiscountRate"/>
    <label xlink:type="resource" xlink:label="label_LeaseRestructuringLiabilityAccrualDiscountRate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_LeaseRestructuringLiabilityAccrualDiscountRate" xml:lang="en-US" id="label_LeaseRestructuringLiabilityAccrualDiscountRate">The credit-adjusted risk-free discount rate applied to the undiscounted amount of projected cash inflows and/or outflows to arrive at the present value of the lease restructuring liability recorded as of the balance sheet date.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeaseRestructuringLiabilityAccrualDiscountRate" xlink:to="label_LeaseRestructuringLiabilityAccrualDiscountRate" xlink:title="label: LeaseRestructuringLiabilityAccrualDiscountRate to label_LeaseRestructuringLiabilityAccrualDiscountRate"/>
    <label xlink:type="resource" xlink:label="label_LeaseRestructuringLiabilityAccrualDiscountRate_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LeaseRestructuringLiabilityAccrualDiscountRate" xml:lang="en-US" id="label_LeaseRestructuringLiabilityAccrualDiscountRate_2">Discount rate, lease restructuring liability (as a percent)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeaseRestructuringLiabilityAccrualDiscountRate" xlink:to="label_LeaseRestructuringLiabilityAccrualDiscountRate_2" xlink:title="label: LeaseRestructuringLiabilityAccrualDiscountRate to label_LeaseRestructuringLiabilityAccrualDiscountRate"/>
    <label xlink:type="resource" xlink:label="label_LeaseRestructuringLiabilityAccrualDiscountRate_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LeaseRestructuringLiabilityAccrualDiscountRate" xml:lang="en-US" id="label_LeaseRestructuringLiabilityAccrualDiscountRate_3">Lease Restructuring Liability Accrual Discount Rate</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeaseRestructuringLiabilityAccrualDiscountRate" xlink:to="label_LeaseRestructuringLiabilityAccrualDiscountRate_3" xlink:title="label: LeaseRestructuringLiabilityAccrualDiscountRate to label_LeaseRestructuringLiabilityAccrualDiscountRate"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_RestructuringReserveSettledWithCashReceiptFromSublease" xlink:label="RestructuringReserveSettledWithCashReceiptFromSublease" xlink:title="RestructuringReserveSettledWithCashReceiptFromSublease"/>
    <label xlink:type="resource" xlink:label="label_RestructuringReserveSettledWithCashReceiptFromSublease" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RestructuringReserveSettledWithCashReceiptFromSublease" xml:lang="en-US" id="label_RestructuringReserveSettledWithCashReceiptFromSublease">Restructuring Reserve Settled With Cash Receipt from Sublease</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestructuringReserveSettledWithCashReceiptFromSublease" xlink:to="label_RestructuringReserveSettledWithCashReceiptFromSublease" xlink:title="label: RestructuringReserveSettledWithCashReceiptFromSublease to label_RestructuringReserveSettledWithCashReceiptFromSublease"/>
    <label xlink:type="resource" xlink:label="label_RestructuringReserveSettledWithCashReceiptFromSublease_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_RestructuringReserveSettledWithCashReceiptFromSublease" xml:lang="en-US" id="label_RestructuringReserveSettledWithCashReceiptFromSublease_2">Amount of cash received in the period to fully or partially offset a specified, previously accrued type of restructuring cost.</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FinancialAssetsAtCarryingValue" xlink:to="label_FinancialAssetsAtCarryingValue_2" xlink:title="label: FinancialAssetsAtCarryingValue to label_FinancialAssetsAtCarryingValue"/>
    <label xlink:type="resource" xlink:label="label_FinancialAssetsAtCarryingValue_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_FinancialAssetsAtCarryingValue" xml:lang="en-US" id="label_FinancialAssetsAtCarryingValue_3">Represents the carrying value of all financial assets that are valued at fair value in the financial statements as of the balance sheet date.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FinancialAssetsAtCarryingValue" xlink:to="label_FinancialAssetsAtCarryingValue_3" xlink:title="label: FinancialAssetsAtCarryingValue to label_FinancialAssetsAtCarryingValue"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_FairValueLiabilitiesMeasuredOnRecurringBasisAbstract" xlink:label="FairValueLiabilitiesMeasuredOnRecurringBasisAbstract" xlink:title="FairValueLiabilitiesMeasuredOnRecurringBasisAbstract"/>
    <label xlink:type="resource" xlink:label="label_FairValueLiabilitiesMeasuredOnRecurringBasisAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FairValueLiabilitiesMeasuredOnRecurringBasisAbstract" xml:lang="en-US" id="label_FairValueLiabilitiesMeasuredOnRecurringBasisAbstract">Financial liabilities carried at fair value:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueLiabilitiesMeasuredOnRecurringBasisAbstract" xlink:to="label_FairValueLiabilitiesMeasuredOnRecurringBasisAbstract" xlink:title="label: FairValueLiabilitiesMeasuredOnRecurringBasisAbstract to label_FairValueLiabilitiesMeasuredOnRecurringBasisAbstract"/>
    <label xlink:type="resource" xlink:label="label_FairValueLiabilitiesMeasuredOnRecurringBasisAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueLiabilitiesMeasuredOnRecurringBasisAbstract" xml:lang="en-US" id="label_FairValueLiabilitiesMeasuredOnRecurringBasisAbstract_2">Fair Value Liabilities Measured on Recurring Basis [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueLiabilitiesMeasuredOnRecurringBasisAbstract" xlink:to="label_FairValueLiabilitiesMeasuredOnRecurringBasisAbstract_2" xlink:title="label: FairValueLiabilitiesMeasuredOnRecurringBasisAbstract to label_FairValueLiabilitiesMeasuredOnRecurringBasisAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_FinancialLiabilitiesAtCarryingValue" xlink:label="FinancialLiabilitiesAtCarryingValue" xlink:title="FinancialLiabilitiesAtCarryingValue"/>
    <label xlink:type="resource" xlink:label="label_FinancialLiabilitiesAtCarryingValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FinancialLiabilitiesAtCarryingValue" xml:lang="en-US" id="label_FinancialLiabilitiesAtCarryingValue">Financial Liabilities at Carrying Value</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FinancialLiabilitiesAtCarryingValue" xlink:to="label_FinancialLiabilitiesAtCarryingValue" xlink:title="label: FinancialLiabilitiesAtCarryingValue to label_FinancialLiabilitiesAtCarryingValue"/>
    <label xlink:type="resource" xlink:label="label_FinancialLiabilitiesAtCarryingValue_2" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_FinancialLiabilitiesAtCarryingValue" xml:lang="en-US" id="label_FinancialLiabilitiesAtCarryingValue_2">Total</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FinancialLiabilitiesAtCarryingValue" xlink:to="label_FinancialLiabilitiesAtCarryingValue_2" xlink:title="label: FinancialLiabilitiesAtCarryingValue to label_FinancialLiabilitiesAtCarryingValue"/>
    <label xlink:type="resource" xlink:label="label_FinancialLiabilitiesAtCarryingValue_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_FinancialLiabilitiesAtCarryingValue" xml:lang="en-US" id="label_FinancialLiabilitiesAtCarryingValue_3">Represents the carrying value of all financial liabilities that are valued at fair value in the financial statements as of the balance sheet date.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FinancialLiabilitiesAtCarryingValue" xlink:to="label_FinancialLiabilitiesAtCarryingValue_3" xlink:title="label: FinancialLiabilitiesAtCarryingValue to label_FinancialLiabilitiesAtCarryingValue"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementNoticePeriodInMonths" xlink:label="CollaborativeArrangementNoticePeriodInMonths" xlink:title="CollaborativeArrangementNoticePeriodInMonths"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementNoticePeriodInMonths" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementNoticePeriodInMonths" xml:lang="en-US" id="label_CollaborativeArrangementNoticePeriodInMonths">Collaborative Arrangement Notice Period in Months</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementNoticePeriodInMonths" xlink:to="label_CollaborativeArrangementNoticePeriodInMonths" xlink:title="label: CollaborativeArrangementNoticePeriodInMonths to label_CollaborativeArrangementNoticePeriodInMonths"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementNoticePeriodInMonths_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CollaborativeArrangementNoticePeriodInMonths" xml:lang="en-US" id="label_CollaborativeArrangementNoticePeriodInMonths_2">Notice period to terminate GlaxoSmithKline arrangement (in months)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementNoticePeriodInMonths" xlink:to="label_CollaborativeArrangementNoticePeriodInMonths_2" xlink:title="label: CollaborativeArrangementNoticePeriodInMonths to label_CollaborativeArrangementNoticePeriodInMonths"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementNoticePeriodInMonths_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaborativeArrangementNoticePeriodInMonths" xml:lang="en-US" id="label_CollaborativeArrangementNoticePeriodInMonths_3">The number of months notice required to terminate a collaborative arrangement.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementNoticePeriodInMonths" xlink:to="label_CollaborativeArrangementNoticePeriodInMonths_3" xlink:title="label: CollaborativeArrangementNoticePeriodInMonths to label_CollaborativeArrangementNoticePeriodInMonths"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ProceedsFromSaleOfRoyaltyRights" xlink:label="ProceedsFromSaleOfRoyaltyRights" xlink:title="ProceedsFromSaleOfRoyaltyRights"/>
    <label xlink:type="resource" xlink:label="label_ProceedsFromSaleOfRoyaltyRights" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ProceedsFromSaleOfRoyaltyRights" xml:lang="en-US" id="label_ProceedsFromSaleOfRoyaltyRights">Proceeds from Sale of Royalty Rights</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromSaleOfRoyaltyRights" xlink:to="label_ProceedsFromSaleOfRoyaltyRights" xlink:title="label: ProceedsFromSaleOfRoyaltyRights to label_ProceedsFromSaleOfRoyaltyRights"/>
    <label xlink:type="resource" xlink:label="label_ProceedsFromSaleOfRoyaltyRights_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ProceedsFromSaleOfRoyaltyRights" xml:lang="en-US" id="label_ProceedsFromSaleOfRoyaltyRights_2">Gross proceeds from sale of royalty rights receivable from GlaxoSmithKline</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromSaleOfRoyaltyRights" xlink:to="label_ProceedsFromSaleOfRoyaltyRights_2" xlink:title="label: ProceedsFromSaleOfRoyaltyRights to label_ProceedsFromSaleOfRoyaltyRights"/>
    <label xlink:type="resource" xlink:label="label_ProceedsFromSaleOfRoyaltyRights_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ProceedsFromSaleOfRoyaltyRights" xml:lang="en-US" id="label_ProceedsFromSaleOfRoyaltyRights_3">The cash inflow from the sale of the entity's right to receive future royalty payments.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromSaleOfRoyaltyRights" xlink:to="label_ProceedsFromSaleOfRoyaltyRights_3" xlink:title="label: ProceedsFromSaleOfRoyaltyRights to label_ProceedsFromSaleOfRoyaltyRights"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_DeferredRevenueRoyaltyPurchaseAgreementAtInception" xlink:label="DeferredRevenueRoyaltyPurchaseAgreementAtInception" xlink:title="DeferredRevenueRoyaltyPurchaseAgreementAtInception"/>
    <label xlink:type="resource" xlink:label="label_DeferredRevenueRoyaltyPurchaseAgreementAtInception" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DeferredRevenueRoyaltyPurchaseAgreementAtInception" xml:lang="en-US" id="label_DeferredRevenueRoyaltyPurchaseAgreementAtInception">Deferred Revenue Royalty Purchase Agreement at Inception</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredRevenueRoyaltyPurchaseAgreementAtInception" xlink:to="label_DeferredRevenueRoyaltyPurchaseAgreementAtInception" xlink:title="label: DeferredRevenueRoyaltyPurchaseAgreementAtInception to label_DeferredRevenueRoyaltyPurchaseAgreementAtInception"/>
    <label xlink:type="resource" xlink:label="label_DeferredRevenueRoyaltyPurchaseAgreementAtInception_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DeferredRevenueRoyaltyPurchaseAgreementAtInception" xml:lang="en-US" id="label_DeferredRevenueRoyaltyPurchaseAgreementAtInception_2">Deferred revenue, Fosamprenavir Royalty</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredRevenueRoyaltyPurchaseAgreementAtInception" xlink:to="label_DeferredRevenueRoyaltyPurchaseAgreementAtInception_2" xlink:title="label: DeferredRevenueRoyaltyPurchaseAgreementAtInception to label_DeferredRevenueRoyaltyPurchaseAgreementAtInception"/>
    <label xlink:type="resource" xlink:label="label_DeferredRevenueRoyaltyPurchaseAgreementAtInception_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DeferredRevenueRoyaltyPurchaseAgreementAtInception" xml:lang="en-US" id="label_DeferredRevenueRoyaltyPurchaseAgreementAtInception_3">The carrying value of deferred revenue recorded in the balance sheet on the date of inception of agreement to sell rights to receive royalty payments.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredRevenueRoyaltyPurchaseAgreementAtInception" xlink:to="label_DeferredRevenueRoyaltyPurchaseAgreementAtInception_3" xlink:title="label: DeferredRevenueRoyaltyPurchaseAgreementAtInception to label_DeferredRevenueRoyaltyPurchaseAgreementAtInception"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ResearchAndDevelopmentExpenseAssociatedWithCollaborativePrograms" xlink:label="ResearchAndDevelopmentExpenseAssociatedWithCollaborativePrograms" xlink:title="ResearchAndDevelopmentExpenseAssociatedWithCollaborativePrograms"/>
    <label xlink:type="resource" xlink:label="label_ResearchAndDevelopmentExpenseAssociatedWithCollaborativePrograms" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ResearchAndDevelopmentExpenseAssociatedWithCollaborativePrograms" xml:lang="en-US" id="label_ResearchAndDevelopmentExpenseAssociatedWithCollaborativePrograms">Research and Development Expense Associated with Collaborative Programs</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ResearchAndDevelopmentExpenseAssociatedWithCollaborativePrograms" xlink:to="label_ResearchAndDevelopmentExpenseAssociatedWithCollaborativePrograms" xlink:title="label: ResearchAndDevelopmentExpenseAssociatedWithCollaborativePrograms to label_ResearchAndDevelopmentExpenseAssociatedWithCollaborativePrograms"/>
    <label xlink:type="resource" xlink:label="label_ResearchAndDevelopmentExpenseAssociatedWithCollaborativePrograms_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ResearchAndDevelopmentExpenseAssociatedWithCollaborativePrograms" xml:lang="en-US" id="label_ResearchAndDevelopmentExpenseAssociatedWithCollaborativePrograms_2">Research and development expense associated with collaborative programs</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ResearchAndDevelopmentExpenseAssociatedWithCollaborativePrograms" xlink:to="label_ResearchAndDevelopmentExpenseAssociatedWithCollaborativePrograms_2" xlink:title="label: ResearchAndDevelopmentExpenseAssociatedWithCollaborativePrograms to label_ResearchAndDevelopmentExpenseAssociatedWithCollaborativePrograms"/>
    <label xlink:type="resource" xlink:label="label_ResearchAndDevelopmentExpenseAssociatedWithCollaborativePrograms_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ResearchAndDevelopmentExpenseAssociatedWithCollaborativePrograms" xml:lang="en-US" id="label_ResearchAndDevelopmentExpenseAssociatedWithCollaborativePrograms_3">A portion of the aggregate research and development expense that has been allocated to programs in which a collaborator has funded at least a portion of the research and development expenses.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ResearchAndDevelopmentExpenseAssociatedWithCollaborativePrograms" xlink:to="label_ResearchAndDevelopmentExpenseAssociatedWithCollaborativePrograms_3" xlink:title="label: ResearchAndDevelopmentExpenseAssociatedWithCollaborativePrograms to label_ResearchAndDevelopmentExpenseAssociatedWithCollaborativePrograms"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_EmployeeRestrictedStockOptionMember" xlink:label="EmployeeRestrictedStockOptionMember" xlink:title="EmployeeRestrictedStockOptionMember"/>
    <label xlink:type="resource" xlink:label="label_EmployeeRestrictedStockOptionMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EmployeeRestrictedStockOptionMember" xml:lang="en-US" id="label_EmployeeRestrictedStockOptionMember">Restricted stock and restricted stock units</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EmployeeRestrictedStockOptionMember" xlink:to="label_EmployeeRestrictedStockOptionMember" xlink:title="label: EmployeeRestrictedStockOptionMember to label_EmployeeRestrictedStockOptionMember"/>
    <label xlink:type="resource" xlink:label="label_EmployeeRestrictedStockOptionMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_EmployeeRestrictedStockOptionMember" xml:lang="en-US" id="label_EmployeeRestrictedStockOptionMember_2">An arrangement whereby certain members of senior management are entitled to receive in the future, subject to vesting and other restrictions, a number of shares in the entity at a specified price, as defined in the agreement.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EmployeeRestrictedStockOptionMember" xlink:to="label_EmployeeRestrictedStockOptionMember_2" xlink:title="label: EmployeeRestrictedStockOptionMember to label_EmployeeRestrictedStockOptionMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_EmployeeStockPurchasePlanMember" xlink:label="EmployeeStockPurchasePlanMember" xlink:title="EmployeeStockPurchasePlanMember"/>
    <label xlink:type="resource" xlink:label="label_EmployeeStockPurchasePlanMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EmployeeStockPurchasePlanMember" xml:lang="en-US" id="label_EmployeeStockPurchasePlanMember">ESPP share issuances</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EmployeeStockPurchasePlanMember" xlink:to="label_EmployeeStockPurchasePlanMember" xlink:title="label: EmployeeStockPurchasePlanMember to label_EmployeeStockPurchasePlanMember"/>
    <label xlink:type="resource" xlink:label="label_EmployeeStockPurchasePlanMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_EmployeeStockPurchasePlanMember" xml:lang="en-US" id="label_EmployeeStockPurchasePlanMember_2">An arrangement whereby eligible employees are entitled to purchase Company stock through payroll deduction at a stated percentage of fair market value, as defined in the agreement.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EmployeeStockPurchasePlanMember" xlink:to="label_EmployeeStockPurchasePlanMember_2" xlink:title="label: EmployeeStockPurchasePlanMember to label_EmployeeStockPurchasePlanMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ShareBasedCompensationInResearchAndDevelopmentExpenseMember" xlink:label="ShareBasedCompensationInResearchAndDevelopmentExpenseMember" xlink:title="ShareBasedCompensationInResearchAndDevelopmentExpenseMember"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationInResearchAndDevelopmentExpenseMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationInResearchAndDevelopmentExpenseMember" xml:lang="en-US" id="label_ShareBasedCompensationInResearchAndDevelopmentExpenseMember">Research and development expenses</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationInResearchAndDevelopmentExpenseMember" xlink:to="label_ShareBasedCompensationInResearchAndDevelopmentExpenseMember" xlink:title="label: ShareBasedCompensationInResearchAndDevelopmentExpenseMember to label_ShareBasedCompensationInResearchAndDevelopmentExpenseMember"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationInResearchAndDevelopmentExpenseMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ShareBasedCompensationInResearchAndDevelopmentExpenseMember" xml:lang="en-US" id="label_ShareBasedCompensationInResearchAndDevelopmentExpenseMember_2">The line item in the statement of operations for research and development expense.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationInResearchAndDevelopmentExpenseMember" xlink:to="label_ShareBasedCompensationInResearchAndDevelopmentExpenseMember_2" xlink:title="label: ShareBasedCompensationInResearchAndDevelopmentExpenseMember to label_ShareBasedCompensationInResearchAndDevelopmentExpenseMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ShareBasedCompensationInSalesGeneralAndAdministrativeExpenseMember" xlink:label="ShareBasedCompensationInSalesGeneralAndAdministrativeExpenseMember" xlink:title="ShareBasedCompensationInSalesGeneralAndAdministrativeExpenseMember"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationInSalesGeneralAndAdministrativeExpenseMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationInSalesGeneralAndAdministrativeExpenseMember" xml:lang="en-US" id="label_ShareBasedCompensationInSalesGeneralAndAdministrativeExpenseMember">Sales, general and administrative expenses</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationInSalesGeneralAndAdministrativeExpenseMember" xlink:to="label_ShareBasedCompensationInSalesGeneralAndAdministrativeExpenseMember" xlink:title="label: ShareBasedCompensationInSalesGeneralAndAdministrativeExpenseMember to label_ShareBasedCompensationInSalesGeneralAndAdministrativeExpenseMember"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationInSalesGeneralAndAdministrativeExpenseMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ShareBasedCompensationInSalesGeneralAndAdministrativeExpenseMember" xml:lang="en-US" id="label_ShareBasedCompensationInSalesGeneralAndAdministrativeExpenseMember_2">The line item in the statement of operations for sales, general and administrative expense.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationInSalesGeneralAndAdministrativeExpenseMember" xlink:to="label_ShareBasedCompensationInSalesGeneralAndAdministrativeExpenseMember_2" xlink:title="label: ShareBasedCompensationInSalesGeneralAndAdministrativeExpenseMember to label_ShareBasedCompensationInSalesGeneralAndAdministrativeExpenseMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ShareBasedCompensationAllocationAbstract" xlink:label="ShareBasedCompensationAllocationAbstract" xlink:title="ShareBasedCompensationAllocationAbstract"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationAllocationAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShareBasedCompensationAllocationAbstract" xml:lang="en-US" id="label_ShareBasedCompensationAllocationAbstract">Stock-based compensation expense:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationAllocationAbstract" xlink:to="label_ShareBasedCompensationAllocationAbstract" xlink:title="label: ShareBasedCompensationAllocationAbstract to label_ShareBasedCompensationAllocationAbstract"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationAllocationAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationAllocationAbstract" xml:lang="en-US" id="label_ShareBasedCompensationAllocationAbstract_2">Share-based Compensation Allocation [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationAllocationAbstract" xlink:to="label_ShareBasedCompensationAllocationAbstract_2" xlink:title="label: ShareBasedCompensationAllocationAbstract to label_ShareBasedCompensationAllocationAbstract"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationAggregateDisclosuresAbstract" xlink:label="EmployeeServiceShareBasedCompensationAggregateDisclosuresAbstract" xlink:title="EmployeeServiceShareBasedCompensationAggregateDisclosuresAbstract"/>
    <label xlink:type="resource" xlink:label="label_EmployeeServiceShareBasedCompensationAggregateDisclosuresAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EmployeeServiceShareBasedCompensationAggregateDisclosuresAbstract" xml:lang="en-US" id="label_EmployeeServiceShareBasedCompensationAggregateDisclosuresAbstract">Type of award:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EmployeeServiceShareBasedCompensationAggregateDisclosuresAbstract" xlink:to="label_EmployeeServiceShareBasedCompensationAggregateDisclosuresAbstract" xlink:title="label: EmployeeServiceShareBasedCompensationAggregateDisclosuresAbstract to label_EmployeeServiceShareBasedCompensationAggregateDisclosuresAbstract"/>
    <label xlink:type="resource" xlink:label="label_EmployeeServiceShareBasedCompensationAggregateDisclosuresAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EmployeeServiceShareBasedCompensationAggregateDisclosuresAbstract" xml:lang="en-US" id="label_EmployeeServiceShareBasedCompensationAggregateDisclosuresAbstract_2">Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EmployeeServiceShareBasedCompensationAggregateDisclosuresAbstract" xlink:to="label_EmployeeServiceShareBasedCompensationAggregateDisclosuresAbstract_2" xlink:title="label: EmployeeServiceShareBasedCompensationAggregateDisclosuresAbstract to label_EmployeeServiceShareBasedCompensationAggregateDisclosuresAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CashCashEquivalentsAndMarketableSecuritiesTextBlock" xlink:label="CashCashEquivalentsAndMarketableSecuritiesTextBlock" xlink:title="CashCashEquivalentsAndMarketableSecuritiesTextBlock"/>
    <label xlink:type="resource" xlink:label="label_CashCashEquivalentsAndMarketableSecuritiesTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CashCashEquivalentsAndMarketableSecuritiesTextBlock" xml:lang="en-US" id="label_CashCashEquivalentsAndMarketableSecuritiesTextBlock">Cash, Cash Equivalents and Marketable Securities [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashCashEquivalentsAndMarketableSecuritiesTextBlock" xlink:to="label_CashCashEquivalentsAndMarketableSecuritiesTextBlock" xlink:title="label: CashCashEquivalentsAndMarketableSecuritiesTextBlock to label_CashCashEquivalentsAndMarketableSecuritiesTextBlock"/>
    <label xlink:type="resource" xlink:label="label_CashCashEquivalentsAndMarketableSecuritiesTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CashCashEquivalentsAndMarketableSecuritiesTextBlock" xml:lang="en-US" id="label_CashCashEquivalentsAndMarketableSecuritiesTextBlock_2">This item represents a summary of cash, cash equivalents and marketable securities.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashCashEquivalentsAndMarketableSecuritiesTextBlock" xlink:to="label_CashCashEquivalentsAndMarketableSecuritiesTextBlock_2" xlink:title="label: CashCashEquivalentsAndMarketableSecuritiesTextBlock to label_CashCashEquivalentsAndMarketableSecuritiesTextBlock"/>
    <label xlink:type="resource" xlink:label="label_CashCashEquivalentsAndMarketableSecuritiesTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CashCashEquivalentsAndMarketableSecuritiesTextBlock" xml:lang="en-US" id="label_CashCashEquivalentsAndMarketableSecuritiesTextBlock_3">Summary of cash, cash equivalents and marketable securities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashCashEquivalentsAndMarketableSecuritiesTextBlock" xlink:to="label_CashCashEquivalentsAndMarketableSecuritiesTextBlock_3" xlink:title="label: CashCashEquivalentsAndMarketableSecuritiesTextBlock to label_CashCashEquivalentsAndMarketableSecuritiesTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTable" xlink:label="ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTable" xlink:title="ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTable"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTable" xml:lang="en-US" id="label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTable">Schedule of Cash, Cash Equivalents and Available-for Sale Securities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTable" xlink:to="label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTable" xlink:title="label: ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTable to label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTable"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTable_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTable" xml:lang="en-US" id="label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTable_2">Schedule of the cash and cash equivalents and available-for-sale investments held by the entity.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTable" xlink:to="label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTable_2" xlink:title="label: ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTable to label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTable"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTypesOfFinancialInstrumentsAxis" xlink:label="ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTypesOfFinancialInstrumentsAxis" xlink:title="ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTypesOfFinancialInstrumentsAxis"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTypesOfFinancialInstrumentsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTypesOfFinancialInstrumentsAxis" xml:lang="en-US" id="label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTypesOfFinancialInstrumentsAxis">Schedule of Cash, Cash Equivalents and Available-for Sale Securities Types of Financial Instruments</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTypesOfFinancialInstrumentsAxis" xlink:to="label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTypesOfFinancialInstrumentsAxis" xlink:title="label: ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTypesOfFinancialInstrumentsAxis to label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTypesOfFinancialInstrumentsAxis"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTypesOfFinancialInstrumentsAxis_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTypesOfFinancialInstrumentsAxis" xml:lang="en-US" id="label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTypesOfFinancialInstrumentsAxis_2">This element represents a number of concepts which capture the categories of financial instruments classified as cash and cash equivalents and available-for-sale investments.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTypesOfFinancialInstrumentsAxis" xlink:to="label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTypesOfFinancialInstrumentsAxis_2" xlink:title="label: ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTypesOfFinancialInstrumentsAxis to label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesTypesOfFinancialInstrumentsAxis"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_TypesOfFinancialInstrumentsDomain" xlink:label="TypesOfFinancialInstrumentsDomain" xlink:title="TypesOfFinancialInstrumentsDomain"/>
    <label xlink:type="resource" xlink:label="label_TypesOfFinancialInstrumentsDomain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_TypesOfFinancialInstrumentsDomain" xml:lang="en-US" id="label_TypesOfFinancialInstrumentsDomain">Provides general categories of financial instruments included as cash, cash equivalents and available-for-sale investments.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TypesOfFinancialInstrumentsDomain" xlink:to="label_TypesOfFinancialInstrumentsDomain" xlink:title="label: TypesOfFinancialInstrumentsDomain to label_TypesOfFinancialInstrumentsDomain"/>
    <label xlink:type="resource" xlink:label="label_TypesOfFinancialInstrumentsDomain_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_TypesOfFinancialInstrumentsDomain" xml:lang="en-US" id="label_TypesOfFinancialInstrumentsDomain_2">Types of Financial Instruments [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TypesOfFinancialInstrumentsDomain" xlink:to="label_TypesOfFinancialInstrumentsDomain_2" xlink:title="label: TypesOfFinancialInstrumentsDomain to label_TypesOfFinancialInstrumentsDomain"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CashAndMoneyMarketFundsMember" xlink:label="CashAndMoneyMarketFundsMember" xlink:title="CashAndMoneyMarketFundsMember"/>
    <label xlink:type="resource" xlink:label="label_CashAndMoneyMarketFundsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CashAndMoneyMarketFundsMember" xml:lang="en-US" id="label_CashAndMoneyMarketFundsMember">Cash and money market funds</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndMoneyMarketFundsMember" xlink:to="label_CashAndMoneyMarketFundsMember" xlink:title="label: CashAndMoneyMarketFundsMember to label_CashAndMoneyMarketFundsMember"/>
    <label xlink:type="resource" xlink:label="label_CashAndMoneyMarketFundsMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CashAndMoneyMarketFundsMember" xml:lang="en-US" id="label_CashAndMoneyMarketFundsMember_2">Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndMoneyMarketFundsMember" xlink:to="label_CashAndMoneyMarketFundsMember_2" xlink:title="label: CashAndMoneyMarketFundsMember to label_CashAndMoneyMarketFundsMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_USGovernmentSponsoredEnterprisesDebtSecuritiesCashEquivalentMember" xlink:label="USGovernmentSponsoredEnterprisesDebtSecuritiesCashEquivalentMember" xlink:title="USGovernmentSponsoredEnterprisesDebtSecuritiesCashEquivalentMember"/>
    <label xlink:type="resource" xlink:label="label_USGovernmentSponsoredEnterprisesDebtSecuritiesCashEquivalentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_USGovernmentSponsoredEnterprisesDebtSecuritiesCashEquivalentMember" xml:lang="en-US" id="label_USGovernmentSponsoredEnterprisesDebtSecuritiesCashEquivalentMember">Government-sponsored enterprise securities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="USGovernmentSponsoredEnterprisesDebtSecuritiesCashEquivalentMember" xlink:to="label_USGovernmentSponsoredEnterprisesDebtSecuritiesCashEquivalentMember" xlink:title="label: USGovernmentSponsoredEnterprisesDebtSecuritiesCashEquivalentMember to label_USGovernmentSponsoredEnterprisesDebtSecuritiesCashEquivalentMember"/>
    <label xlink:type="resource" xlink:label="label_USGovernmentSponsoredEnterprisesDebtSecuritiesCashEquivalentMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_USGovernmentSponsoredEnterprisesDebtSecuritiesCashEquivalentMember" xml:lang="en-US" id="label_USGovernmentSponsoredEnterprisesDebtSecuritiesCashEquivalentMember_2">Represents cash equivalents that are investments in debentures, bonds and other debt securities issued by GSEs, such as the Federal Home Loan Mortgage Corporation (FHLMC or Freddie Mac), Federal National Mortgage Association (FNMA or Fannie Mae), and the Federal Home Loan Bank (FHLB). Excludes debt issued by the Government National Mortgage Association (GNMA or Ginnie Mae), which is backed by the full faith and credit of the US Government.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="USGovernmentSponsoredEnterprisesDebtSecuritiesCashEquivalentMember" xlink:to="label_USGovernmentSponsoredEnterprisesDebtSecuritiesCashEquivalentMember_2" xlink:title="label: USGovernmentSponsoredEnterprisesDebtSecuritiesCashEquivalentMember to label_USGovernmentSponsoredEnterprisesDebtSecuritiesCashEquivalentMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_USTreasurySecuritiesCashEquivalentMember" xlink:label="USTreasurySecuritiesCashEquivalentMember" xlink:title="USTreasurySecuritiesCashEquivalentMember"/>
    <label xlink:type="resource" xlink:label="label_USTreasurySecuritiesCashEquivalentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_USTreasurySecuritiesCashEquivalentMember" xml:lang="en-US" id="label_USTreasurySecuritiesCashEquivalentMember">U.S. Treasury securities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="USTreasurySecuritiesCashEquivalentMember" xlink:to="label_USTreasurySecuritiesCashEquivalentMember" xlink:title="label: USTreasurySecuritiesCashEquivalentMember to label_USTreasurySecuritiesCashEquivalentMember"/>
    <label xlink:type="resource" xlink:label="label_USTreasurySecuritiesCashEquivalentMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_USTreasurySecuritiesCashEquivalentMember" xml:lang="en-US" id="label_USTreasurySecuritiesCashEquivalentMember_2">This category includes information about debt securities issued by the United States Department of the Treasury and backed by the United States government that are classified as cash equivalents. Such securities primarily consist of treasury bills (short-term maturities - one year or less), treasury notes (intermediate term maturities - two to ten years), and treasury bonds (long-term maturities - ten to thirty years).</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="USTreasurySecuritiesCashEquivalentMember" xlink:to="label_USTreasurySecuritiesCashEquivalentMember_2" xlink:title="label: USTreasurySecuritiesCashEquivalentMember to label_USTreasurySecuritiesCashEquivalentMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesLineItems" xlink:label="ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesLineItems" xlink:title="ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesLineItems"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesLineItems" xml:lang="en-US" id="label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesLineItems">Summary of cash, cash equivalents and marketable securities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesLineItems" xlink:to="label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesLineItems" xlink:title="label: ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesLineItems to label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesLineItems"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesLineItems_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesLineItems" xml:lang="en-US" id="label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesLineItems_2">Schedule of Cash, Cash Equivalents and Available-for-Sale Securities [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesLineItems" xlink:to="label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesLineItems_2" xlink:title="label: ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesLineItems to label_ScheduleOfCashCashEquivalentsAndAvailableForSaleSecuritiesLineItems"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CashCashEquivalentsAndAvailableForSaleSecuritiesFairValue" xlink:label="CashCashEquivalentsAndAvailableForSaleSecuritiesFairValue" xlink:title="CashCashEquivalentsAndAvailableForSaleSecuritiesFairValue"/>
    <label xlink:type="resource" xlink:label="label_CashCashEquivalentsAndAvailableForSaleSecuritiesFairValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CashCashEquivalentsAndAvailableForSaleSecuritiesFairValue" xml:lang="en-US" id="label_CashCashEquivalentsAndAvailableForSaleSecuritiesFairValue">Cash, Cash Equivalents and Available-for Sale Securities, Fair Value</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashCashEquivalentsAndAvailableForSaleSecuritiesFairValue" xlink:to="label_CashCashEquivalentsAndAvailableForSaleSecuritiesFairValue" xlink:title="label: CashCashEquivalentsAndAvailableForSaleSecuritiesFairValue to label_CashCashEquivalentsAndAvailableForSaleSecuritiesFairValue"/>
    <label xlink:type="resource" xlink:label="label_CashCashEquivalentsAndAvailableForSaleSecuritiesFairValue_2" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_CashCashEquivalentsAndAvailableForSaleSecuritiesFairValue" xml:lang="en-US" id="label_CashCashEquivalentsAndAvailableForSaleSecuritiesFairValue_2">Fair Value</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashCashEquivalentsAndAvailableForSaleSecuritiesFairValue" xlink:to="label_CashCashEquivalentsAndAvailableForSaleSecuritiesFairValue_2" xlink:title="label: CashCashEquivalentsAndAvailableForSaleSecuritiesFairValue to label_CashCashEquivalentsAndAvailableForSaleSecuritiesFairValue"/>
    <label xlink:type="resource" xlink:label="label_CashCashEquivalentsAndAvailableForSaleSecuritiesFairValue_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CashCashEquivalentsAndAvailableForSaleSecuritiesFairValue" xml:lang="en-US" id="label_CashCashEquivalentsAndAvailableForSaleSecuritiesFairValue_3">This item represents the fair value of cash, cash equivalents and debt and equity securities, which are categorized neither as held-to-maturity nor trading.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashCashEquivalentsAndAvailableForSaleSecuritiesFairValue" xlink:to="label_CashCashEquivalentsAndAvailableForSaleSecuritiesFairValue_3" xlink:title="label: CashCashEquivalentsAndAvailableForSaleSecuritiesFairValue to label_CashCashEquivalentsAndAvailableForSaleSecuritiesFairValue"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_EquityOfferingTable" xlink:label="EquityOfferingTable" xlink:title="EquityOfferingTable"/>
    <label xlink:type="resource" xlink:label="label_EquityOfferingTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EquityOfferingTable" xml:lang="en-US" id="label_EquityOfferingTable">Equity Offering.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityOfferingTable" xlink:to="label_EquityOfferingTable" xlink:title="label: EquityOfferingTable to label_EquityOfferingTable"/>
    <label xlink:type="resource" xlink:label="label_EquityOfferingTable_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_EquityOfferingTable" xml:lang="en-US" id="label_EquityOfferingTable_2">A table that contains information on additional shares of newly issued common stock that have been issued during the accounting period.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityOfferingTable" xlink:to="label_EquityOfferingTable_2" xlink:title="label: EquityOfferingTable to label_EquityOfferingTable"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_EquityOfferingComponentsAxis" xlink:label="EquityOfferingComponentsAxis" xlink:title="EquityOfferingComponentsAxis"/>
    <label xlink:type="resource" xlink:label="label_EquityOfferingComponentsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EquityOfferingComponentsAxis" xml:lang="en-US" id="label_EquityOfferingComponentsAxis">Equity Offering Components [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityOfferingComponentsAxis" xlink:to="label_EquityOfferingComponentsAxis" xlink:title="label: EquityOfferingComponentsAxis to label_EquityOfferingComponentsAxis"/>
    <label xlink:type="resource" xlink:label="label_EquityOfferingComponentsAxis_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_EquityOfferingComponentsAxis" xml:lang="en-US" id="label_EquityOfferingComponentsAxis_2">Components of equity offering are the parts of the total Equity balance.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityOfferingComponentsAxis" xlink:to="label_EquityOfferingComponentsAxis_2" xlink:title="label: EquityOfferingComponentsAxis to label_EquityOfferingComponentsAxis"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_February2009EquityOfferingMember" xlink:label="February2009EquityOfferingMember" xlink:title="February2009EquityOfferingMember"/>
    <label xlink:type="resource" xlink:label="label_February2009EquityOfferingMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_February2009EquityOfferingMember" xml:lang="en-US" id="label_February2009EquityOfferingMember">February 2009 Equity Offering</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="February2009EquityOfferingMember" xlink:to="label_February2009EquityOfferingMember" xlink:title="label: February2009EquityOfferingMember to label_February2009EquityOfferingMember"/>
    <label xlink:type="resource" xlink:label="label_February2009EquityOfferingMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_February2009EquityOfferingMember" xml:lang="en-US" id="label_February2009EquityOfferingMember_2">An offering of common stock of the entity which was completed in February 2009.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="February2009EquityOfferingMember" xlink:to="label_February2009EquityOfferingMember_2" xlink:title="label: February2009EquityOfferingMember to label_February2009EquityOfferingMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_December2009EquityOfferingMember" xlink:label="December2009EquityOfferingMember" xlink:title="December2009EquityOfferingMember"/>
    <label xlink:type="resource" xlink:label="label_December2009EquityOfferingMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_December2009EquityOfferingMember" xml:lang="en-US" id="label_December2009EquityOfferingMember">December 2009 Equity Offering</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="December2009EquityOfferingMember" xlink:to="label_December2009EquityOfferingMember" xlink:title="label: December2009EquityOfferingMember to label_December2009EquityOfferingMember"/>
    <label xlink:type="resource" xlink:label="label_December2009EquityOfferingMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_December2009EquityOfferingMember" xml:lang="en-US" id="label_December2009EquityOfferingMember_2">An offering of common stock of the entity which was completed in December 2009.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="December2009EquityOfferingMember" xlink:to="label_December2009EquityOfferingMember_2" xlink:title="label: December2009EquityOfferingMember to label_December2009EquityOfferingMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_EquityOfferingLineItems" xlink:label="EquityOfferingLineItems" xlink:title="EquityOfferingLineItems"/>
    <label xlink:type="resource" xlink:label="label_EquityOfferingLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EquityOfferingLineItems" xml:lang="en-US" id="label_EquityOfferingLineItems">Equity Offering</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityOfferingLineItems" xlink:to="label_EquityOfferingLineItems" xlink:title="label: EquityOfferingLineItems to label_EquityOfferingLineItems"/>
    <label xlink:type="resource" xlink:label="label_EquityOfferingLineItems_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EquityOfferingLineItems" xml:lang="en-US" id="label_EquityOfferingLineItems_2">Equity Offering [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityOfferingLineItems" xlink:to="label_EquityOfferingLineItems_2" xlink:title="label: EquityOfferingLineItems to label_EquityOfferingLineItems"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_SharesIssuedNewIssuePricePerShare" xlink:label="SharesIssuedNewIssuePricePerShare" xlink:title="SharesIssuedNewIssuePricePerShare"/>
    <label xlink:type="resource" xlink:label="label_SharesIssuedNewIssuePricePerShare" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_SharesIssuedNewIssuePricePerShare" xml:lang="en-US" id="label_SharesIssuedNewIssuePricePerShare">The dollar amount received by the entity for each share of common stock issued or sold in the stock transaction.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SharesIssuedNewIssuePricePerShare" xlink:to="label_SharesIssuedNewIssuePricePerShare" xlink:title="label: SharesIssuedNewIssuePricePerShare to label_SharesIssuedNewIssuePricePerShare"/>
    <label xlink:type="resource" xlink:label="label_SharesIssuedNewIssuePricePerShare_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SharesIssuedNewIssuePricePerShare" xml:lang="en-US" id="label_SharesIssuedNewIssuePricePerShare_2">Shares issued price (in dollars per share)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SharesIssuedNewIssuePricePerShare" xlink:to="label_SharesIssuedNewIssuePricePerShare_2" xlink:title="label: SharesIssuedNewIssuePricePerShare to label_SharesIssuedNewIssuePricePerShare"/>
    <label xlink:type="resource" xlink:label="label_SharesIssuedNewIssuePricePerShare_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SharesIssuedNewIssuePricePerShare" xml:lang="en-US" id="label_SharesIssuedNewIssuePricePerShare_3">Shares Issued New Issue Price per Share</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SharesIssuedNewIssuePricePerShare" xlink:to="label_SharesIssuedNewIssuePricePerShare_3" xlink:title="label: SharesIssuedNewIssuePricePerShare to label_SharesIssuedNewIssuePricePerShare"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_AdjustmentsToAdditionalPaidInCapitalStockIssuedUnderwritingDiscount" xlink:label="AdjustmentsToAdditionalPaidInCapitalStockIssuedUnderwritingDiscount" xlink:title="AdjustmentsToAdditionalPaidInCapitalStockIssuedUnderwritingDiscount"/>
    <label xlink:type="resource" xlink:label="label_AdjustmentsToAdditionalPaidInCapitalStockIssuedUnderwritingDiscount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AdjustmentsToAdditionalPaidInCapitalStockIssuedUnderwritingDiscount" xml:lang="en-US" id="label_AdjustmentsToAdditionalPaidInCapitalStockIssuedUnderwritingDiscount">Adjustments to Additional Paid in Capital Stock Issued, Underwriting Discount</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AdjustmentsToAdditionalPaidInCapitalStockIssuedUnderwritingDiscount" xlink:to="label_AdjustmentsToAdditionalPaidInCapitalStockIssuedUnderwritingDiscount" xlink:title="label: AdjustmentsToAdditionalPaidInCapitalStockIssuedUnderwritingDiscount to label_AdjustmentsToAdditionalPaidInCapitalStockIssuedUnderwritingDiscount"/>
    <label xlink:type="resource" xlink:label="label_AdjustmentsToAdditionalPaidInCapitalStockIssuedUnderwritingDiscount_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AdjustmentsToAdditionalPaidInCapitalStockIssuedUnderwritingDiscount" xml:lang="en-US" id="label_AdjustmentsToAdditionalPaidInCapitalStockIssuedUnderwritingDiscount_2">Underwriting discount</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AdjustmentsToAdditionalPaidInCapitalStockIssuedUnderwritingDiscount" xlink:to="label_AdjustmentsToAdditionalPaidInCapitalStockIssuedUnderwritingDiscount_2" xlink:title="label: AdjustmentsToAdditionalPaidInCapitalStockIssuedUnderwritingDiscount to label_AdjustmentsToAdditionalPaidInCapitalStockIssuedUnderwritingDiscount"/>
    <label xlink:type="resource" xlink:label="label_AdjustmentsToAdditionalPaidInCapitalStockIssuedUnderwritingDiscount_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_AdjustmentsToAdditionalPaidInCapitalStockIssuedUnderwritingDiscount" xml:lang="en-US" id="label_AdjustmentsToAdditionalPaidInCapitalStockIssuedUnderwritingDiscount_3">Underwriting discount associated with issuing stock that is deducted from additional paid in capital.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AdjustmentsToAdditionalPaidInCapitalStockIssuedUnderwritingDiscount" xlink:to="label_AdjustmentsToAdditionalPaidInCapitalStockIssuedUnderwritingDiscount_3" xlink:title="label: AdjustmentsToAdditionalPaidInCapitalStockIssuedUnderwritingDiscount to label_AdjustmentsToAdditionalPaidInCapitalStockIssuedUnderwritingDiscount"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_AdjustmentsToAdditionalPaidInCapitalStockIssuedOtherIssuanceCosts" xlink:label="AdjustmentsToAdditionalPaidInCapitalStockIssuedOtherIssuanceCosts" xlink:title="AdjustmentsToAdditionalPaidInCapitalStockIssuedOtherIssuanceCosts"/>
    <label xlink:type="resource" xlink:label="label_AdjustmentsToAdditionalPaidInCapitalStockIssuedOtherIssuanceCosts" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AdjustmentsToAdditionalPaidInCapitalStockIssuedOtherIssuanceCosts" xml:lang="en-US" id="label_AdjustmentsToAdditionalPaidInCapitalStockIssuedOtherIssuanceCosts">Adjustments to Additional Paid in Capital Stock Issued, Other Issuance Costs</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AdjustmentsToAdditionalPaidInCapitalStockIssuedOtherIssuanceCosts" xlink:to="label_AdjustmentsToAdditionalPaidInCapitalStockIssuedOtherIssuanceCosts" xlink:title="label: AdjustmentsToAdditionalPaidInCapitalStockIssuedOtherIssuanceCosts to label_AdjustmentsToAdditionalPaidInCapitalStockIssuedOtherIssuanceCosts"/>
    <label xlink:type="resource" xlink:label="label_AdjustmentsToAdditionalPaidInCapitalStockIssuedOtherIssuanceCosts_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AdjustmentsToAdditionalPaidInCapitalStockIssuedOtherIssuanceCosts" xml:lang="en-US" id="label_AdjustmentsToAdditionalPaidInCapitalStockIssuedOtherIssuanceCosts_2">Other stock issuance expenses</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AdjustmentsToAdditionalPaidInCapitalStockIssuedOtherIssuanceCosts" xlink:to="label_AdjustmentsToAdditionalPaidInCapitalStockIssuedOtherIssuanceCosts_2" xlink:title="label: AdjustmentsToAdditionalPaidInCapitalStockIssuedOtherIssuanceCosts to label_AdjustmentsToAdditionalPaidInCapitalStockIssuedOtherIssuanceCosts"/>
    <label xlink:type="resource" xlink:label="label_AdjustmentsToAdditionalPaidInCapitalStockIssuedOtherIssuanceCosts_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_AdjustmentsToAdditionalPaidInCapitalStockIssuedOtherIssuanceCosts" xml:lang="en-US" id="label_AdjustmentsToAdditionalPaidInCapitalStockIssuedOtherIssuanceCosts_3">Direct costs (e.g., legal and accounting fees), excluding the underwriters discount, associated with issuing stock that is deducted from additional paid in capital.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AdjustmentsToAdditionalPaidInCapitalStockIssuedOtherIssuanceCosts" xlink:to="label_AdjustmentsToAdditionalPaidInCapitalStockIssuedOtherIssuanceCosts_3" xlink:title="label: AdjustmentsToAdditionalPaidInCapitalStockIssuedOtherIssuanceCosts to label_AdjustmentsToAdditionalPaidInCapitalStockIssuedOtherIssuanceCosts"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_DebtExchangeAndDebtConversionTable" xlink:label="DebtExchangeAndDebtConversionTable" xlink:title="DebtExchangeAndDebtConversionTable"/>
    <label xlink:type="resource" xlink:label="label_DebtExchangeAndDebtConversionTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtExchangeAndDebtConversionTable" xml:lang="en-US" id="label_DebtExchangeAndDebtConversionTable">Debt Exchange and Debt Conversion.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtExchangeAndDebtConversionTable" xlink:to="label_DebtExchangeAndDebtConversionTable" xlink:title="label: DebtExchangeAndDebtConversionTable to label_DebtExchangeAndDebtConversionTable"/>
    <label xlink:type="resource" xlink:label="label_DebtExchangeAndDebtConversionTable_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DebtExchangeAndDebtConversionTable" xml:lang="en-US" id="label_DebtExchangeAndDebtConversionTable_2">A schedule of debt conversions and exchanges by the entity.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtExchangeAndDebtConversionTable" xlink:to="label_DebtExchangeAndDebtConversionTable_2" xlink:title="label: DebtExchangeAndDebtConversionTable to label_DebtExchangeAndDebtConversionTable"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_DebtExchangeAndDebtConversionAxis" xlink:label="DebtExchangeAndDebtConversionAxis" xlink:title="DebtExchangeAndDebtConversionAxis"/>
    <label xlink:type="resource" xlink:label="label_DebtExchangeAndDebtConversionAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtExchangeAndDebtConversionAxis" xml:lang="en-US" id="label_DebtExchangeAndDebtConversionAxis">Debt Exchange and Debt Conversion:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtExchangeAndDebtConversionAxis" xlink:to="label_DebtExchangeAndDebtConversionAxis" xlink:title="label: DebtExchangeAndDebtConversionAxis to label_DebtExchangeAndDebtConversionAxis"/>
    <label xlink:type="resource" xlink:label="label_DebtExchangeAndDebtConversionAxis_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DebtExchangeAndDebtConversionAxis" xml:lang="en-US" id="label_DebtExchangeAndDebtConversionAxis_2">The grouping of debt conversion and debt exchange activity of the entity.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtExchangeAndDebtConversionAxis" xlink:to="label_DebtExchangeAndDebtConversionAxis_2" xlink:title="label: DebtExchangeAndDebtConversionAxis to label_DebtExchangeAndDebtConversionAxis"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_DebtExchangeAndDebtConversionActivityDomain" xlink:label="DebtExchangeAndDebtConversionActivityDomain" xlink:title="DebtExchangeAndDebtConversionActivityDomain"/>
    <label xlink:type="resource" xlink:label="label_DebtExchangeAndDebtConversionActivityDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtExchangeAndDebtConversionActivityDomain" xml:lang="en-US" id="label_DebtExchangeAndDebtConversionActivityDomain">Debt Exchange and Debt Conversion Activity</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtExchangeAndDebtConversionActivityDomain" xlink:to="label_DebtExchangeAndDebtConversionActivityDomain" xlink:title="label: DebtExchangeAndDebtConversionActivityDomain to label_DebtExchangeAndDebtConversionActivityDomain"/>
    <label xlink:type="resource" xlink:label="label_DebtExchangeAndDebtConversionActivityDomain_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DebtExchangeAndDebtConversionActivityDomain" xml:lang="en-US" id="label_DebtExchangeAndDebtConversionActivityDomain_2">The list of debt conversion and debt exchange activity of the entity.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtExchangeAndDebtConversionActivityDomain" xlink:to="label_DebtExchangeAndDebtConversionActivityDomain_2" xlink:title="label: DebtExchangeAndDebtConversionActivityDomain to label_DebtExchangeAndDebtConversionActivityDomain"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_SecondQuarter2009ExchangeMember" xlink:label="SecondQuarter2009ExchangeMember" xlink:title="SecondQuarter2009ExchangeMember"/>
    <label xlink:type="resource" xlink:label="label_SecondQuarter2009ExchangeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SecondQuarter2009ExchangeMember" xml:lang="en-US" id="label_SecondQuarter2009ExchangeMember">Second quarter 2009 exchange</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SecondQuarter2009ExchangeMember" xlink:to="label_SecondQuarter2009ExchangeMember" xlink:title="label: SecondQuarter2009ExchangeMember to label_SecondQuarter2009ExchangeMember"/>
    <label xlink:type="resource" xlink:label="label_SecondQuarter2009ExchangeMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_SecondQuarter2009ExchangeMember" xml:lang="en-US" id="label_SecondQuarter2009ExchangeMember_2">The exchange program in which convertible notes were exchanged for newly-issued stock in the second quarter of 2009.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SecondQuarter2009ExchangeMember" xlink:to="label_SecondQuarter2009ExchangeMember_2" xlink:title="label: SecondQuarter2009ExchangeMember to label_SecondQuarter2009ExchangeMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_FourthQuarter2009ExchangeMember" xlink:label="FourthQuarter2009ExchangeMember" xlink:title="FourthQuarter2009ExchangeMember"/>
    <label xlink:type="resource" xlink:label="label_FourthQuarter2009ExchangeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FourthQuarter2009ExchangeMember" xml:lang="en-US" id="label_FourthQuarter2009ExchangeMember">Fourth quarter 2009 exchange</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FourthQuarter2009ExchangeMember" xlink:to="label_FourthQuarter2009ExchangeMember" xlink:title="label: FourthQuarter2009ExchangeMember to label_FourthQuarter2009ExchangeMember"/>
    <label xlink:type="resource" xlink:label="label_FourthQuarter2009ExchangeMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_FourthQuarter2009ExchangeMember" xml:lang="en-US" id="label_FourthQuarter2009ExchangeMember_2">The exchange program in which convertible notes were exchanged for newly-issued stock in the fourth quarter of 2009.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FourthQuarter2009ExchangeMember" xlink:to="label_FourthQuarter2009ExchangeMember_2" xlink:title="label: FourthQuarter2009ExchangeMember to label_FourthQuarter2009ExchangeMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_FirstQuarter2010ConversionMember" xlink:label="FirstQuarter2010ConversionMember" xlink:title="FirstQuarter2010ConversionMember"/>
    <label xlink:type="resource" xlink:label="label_FirstQuarter2010ConversionMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FirstQuarter2010ConversionMember" xml:lang="en-US" id="label_FirstQuarter2010ConversionMember">First quarter 2010 conversion</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FirstQuarter2010ConversionMember" xlink:to="label_FirstQuarter2010ConversionMember" xlink:title="label: FirstQuarter2010ConversionMember to label_FirstQuarter2010ConversionMember"/>
    <label xlink:type="resource" xlink:label="label_FirstQuarter2010ConversionMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_FirstQuarter2010ConversionMember" xml:lang="en-US" id="label_FirstQuarter2010ConversionMember_2">The conversion program in which convertible notes were converted into newly-issued stock in the first quarter of 2010.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FirstQuarter2010ConversionMember" xlink:to="label_FirstQuarter2010ConversionMember_2" xlink:title="label: FirstQuarter2010ConversionMember to label_FirstQuarter2010ConversionMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ConvertibleSeniorSubordinatedNotesAndCollaboratorLoanLineItems" xlink:label="ConvertibleSeniorSubordinatedNotesAndCollaboratorLoanLineItems" xlink:title="ConvertibleSeniorSubordinatedNotesAndCollaboratorLoanLineItems"/>
    <label xlink:type="resource" xlink:label="label_ConvertibleSeniorSubordinatedNotesAndCollaboratorLoanLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ConvertibleSeniorSubordinatedNotesAndCollaboratorLoanLineItems" xml:lang="en-US" id="label_ConvertibleSeniorSubordinatedNotesAndCollaboratorLoanLineItems">Convertible Senior Subordinated Notes and Collaborator Loan</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleSeniorSubordinatedNotesAndCollaboratorLoanLineItems" xlink:to="label_ConvertibleSeniorSubordinatedNotesAndCollaboratorLoanLineItems" xlink:title="label: ConvertibleSeniorSubordinatedNotesAndCollaboratorLoanLineItems to label_ConvertibleSeniorSubordinatedNotesAndCollaboratorLoanLineItems"/>
    <label xlink:type="resource" xlink:label="label_ConvertibleSeniorSubordinatedNotesAndCollaboratorLoanLineItems_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ConvertibleSeniorSubordinatedNotesAndCollaboratorLoanLineItems" xml:lang="en-US" id="label_ConvertibleSeniorSubordinatedNotesAndCollaboratorLoanLineItems_2">Convertible Senior Subordinated Notes and Collaborator Loan [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleSeniorSubordinatedNotesAndCollaboratorLoanLineItems" xlink:to="label_ConvertibleSeniorSubordinatedNotesAndCollaboratorLoanLineItems_2" xlink:title="label: ConvertibleSeniorSubordinatedNotesAndCollaboratorLoanLineItems to label_ConvertibleSeniorSubordinatedNotesAndCollaboratorLoanLineItems"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_DebtExchangeRateSharesIssued" xlink:label="DebtExchangeRateSharesIssued" xlink:title="DebtExchangeRateSharesIssued"/>
    <label xlink:type="resource" xlink:label="label_DebtExchangeRateSharesIssued" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtExchangeRateSharesIssued" xml:lang="en-US" id="label_DebtExchangeRateSharesIssued">Debt Exchange Rate, Shares Issued</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtExchangeRateSharesIssued" xlink:to="label_DebtExchangeRateSharesIssued" xlink:title="label: DebtExchangeRateSharesIssued to label_DebtExchangeRateSharesIssued"/>
    <label xlink:type="resource" xlink:label="label_DebtExchangeRateSharesIssued_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DebtExchangeRateSharesIssued" xml:lang="en-US" id="label_DebtExchangeRateSharesIssued_2">The number of common stock shares issued in a debt exchange per $1000 principal amount.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtExchangeRateSharesIssued" xlink:to="label_DebtExchangeRateSharesIssued_2" xlink:title="label: DebtExchangeRateSharesIssued to label_DebtExchangeRateSharesIssued"/>
    <label xlink:type="resource" xlink:label="label_DebtExchangeRateSharesIssued_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtExchangeRateSharesIssued" xml:lang="en-US" id="label_DebtExchangeRateSharesIssued_3">Amount of common shares issued, per $1000 of principal (in shares)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtExchangeRateSharesIssued" xlink:to="label_DebtExchangeRateSharesIssued_3" xlink:title="label: DebtExchangeRateSharesIssued to label_DebtExchangeRateSharesIssued"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_DebtExchangeRatePrincipalAmountUsedInCalculation" xlink:label="DebtExchangeRatePrincipalAmountUsedInCalculation" xlink:title="DebtExchangeRatePrincipalAmountUsedInCalculation"/>
    <label xlink:type="resource" xlink:label="label_DebtExchangeRatePrincipalAmountUsedInCalculation" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtExchangeRatePrincipalAmountUsedInCalculation" xml:lang="en-US" id="label_DebtExchangeRatePrincipalAmountUsedInCalculation">Debt Exchange Rate Principal Amount Used in Calculation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtExchangeRatePrincipalAmountUsedInCalculation" xlink:to="label_DebtExchangeRatePrincipalAmountUsedInCalculation" xlink:title="label: DebtExchangeRatePrincipalAmountUsedInCalculation to label_DebtExchangeRatePrincipalAmountUsedInCalculation"/>
    <label xlink:type="resource" xlink:label="label_DebtExchangeRatePrincipalAmountUsedInCalculation_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtExchangeRatePrincipalAmountUsedInCalculation" xml:lang="en-US" id="label_DebtExchangeRatePrincipalAmountUsedInCalculation_2">Convertible debt principal amount, basis for exchange</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtExchangeRatePrincipalAmountUsedInCalculation" xlink:to="label_DebtExchangeRatePrincipalAmountUsedInCalculation_2" xlink:title="label: DebtExchangeRatePrincipalAmountUsedInCalculation to label_DebtExchangeRatePrincipalAmountUsedInCalculation"/>
    <label xlink:type="resource" xlink:label="label_DebtExchangeRatePrincipalAmountUsedInCalculation_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DebtExchangeRatePrincipalAmountUsedInCalculation" xml:lang="en-US" id="label_DebtExchangeRatePrincipalAmountUsedInCalculation_3">The unit of measurement in dollars which establishes the exchange rate of the debt instrument into common shares.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtExchangeRatePrincipalAmountUsedInCalculation" xlink:to="label_DebtExchangeRatePrincipalAmountUsedInCalculation_3" xlink:title="label: DebtExchangeRatePrincipalAmountUsedInCalculation to label_DebtExchangeRatePrincipalAmountUsedInCalculation"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfCollaborativeArrangementAgreementsTable" xlink:label="ScheduleOfCollaborativeArrangementAgreementsTable" xlink:title="ScheduleOfCollaborativeArrangementAgreementsTable"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfCollaborativeArrangementAgreementsTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfCollaborativeArrangementAgreementsTable" xml:lang="en-US" id="label_ScheduleOfCollaborativeArrangementAgreementsTable">A schedule reflecting significant collaboration agreements in which the entity is a participant.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfCollaborativeArrangementAgreementsTable" xlink:to="label_ScheduleOfCollaborativeArrangementAgreementsTable" xlink:title="label: ScheduleOfCollaborativeArrangementAgreementsTable to label_ScheduleOfCollaborativeArrangementAgreementsTable"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfCollaborativeArrangementAgreementsTable_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfCollaborativeArrangementAgreementsTable" xml:lang="en-US" id="label_ScheduleOfCollaborativeArrangementAgreementsTable_2">Schedule of Collaborative Arrangement Agreements.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfCollaborativeArrangementAgreementsTable" xlink:to="label_ScheduleOfCollaborativeArrangementAgreementsTable_2" xlink:title="label: ScheduleOfCollaborativeArrangementAgreementsTable to label_ScheduleOfCollaborativeArrangementAgreementsTable"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementsByAgreementAxis" xlink:label="CollaborativeArrangementsByAgreementAxis" xlink:title="CollaborativeArrangementsByAgreementAxis"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementsByAgreementAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementsByAgreementAxis" xml:lang="en-US" id="label_CollaborativeArrangementsByAgreementAxis">Collaborative Arrangements by Agreement</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementsByAgreementAxis" xlink:to="label_CollaborativeArrangementsByAgreementAxis" xlink:title="label: CollaborativeArrangementsByAgreementAxis to label_CollaborativeArrangementsByAgreementAxis"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementsByAgreementAxis_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaborativeArrangementsByAgreementAxis" xml:lang="en-US" id="label_CollaborativeArrangementsByAgreementAxis_2">Significant terms of collaboration arrangements, by individual agreement.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementsByAgreementAxis" xlink:to="label_CollaborativeArrangementsByAgreementAxis_2" xlink:title="label: CollaborativeArrangementsByAgreementAxis to label_CollaborativeArrangementsByAgreementAxis"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementAgreementDomain" xlink:label="CollaborativeArrangementAgreementDomain" xlink:title="CollaborativeArrangementAgreementDomain"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementAgreementDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementAgreementDomain" xml:lang="en-US" id="label_CollaborativeArrangementAgreementDomain">Collaborative Arrangement Agreement</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementAgreementDomain" xlink:to="label_CollaborativeArrangementAgreementDomain" xlink:title="label: CollaborativeArrangementAgreementDomain to label_CollaborativeArrangementAgreementDomain"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementAgreementDomain_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaborativeArrangementAgreementDomain" xml:lang="en-US" id="label_CollaborativeArrangementAgreementDomain_2">Listing of significant collaboration agreements.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementAgreementDomain" xlink:to="label_CollaborativeArrangementAgreementDomain_2" xlink:title="label: CollaborativeArrangementAgreementDomain to label_CollaborativeArrangementAgreementDomain"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_JanssenCollaborativeAgreementMember" xlink:label="JanssenCollaborativeAgreementMember" xlink:title="JanssenCollaborativeAgreementMember"/>
    <label xlink:type="resource" xlink:label="label_JanssenCollaborativeAgreementMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_JanssenCollaborativeAgreementMember" xml:lang="en-US" id="label_JanssenCollaborativeAgreementMember">Janssen Pharmaceutical, N.V.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="JanssenCollaborativeAgreementMember" xlink:to="label_JanssenCollaborativeAgreementMember" xlink:title="label: JanssenCollaborativeAgreementMember to label_JanssenCollaborativeAgreementMember"/>
    <label xlink:type="resource" xlink:label="label_JanssenCollaborativeAgreementMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_JanssenCollaborativeAgreementMember" xml:lang="en-US" id="label_JanssenCollaborativeAgreementMember_2">Collaboration agreement entered into with Janssen Pharmaceutical, N.V. for the development, manufacture and commercialization of a product of the entity.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="JanssenCollaborativeAgreementMember" xlink:to="label_JanssenCollaborativeAgreementMember_2" xlink:title="label: JanssenCollaborativeAgreementMember to label_JanssenCollaborativeAgreementMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_MitsubishiTanabeCollaborativeAgreementtMember" xlink:label="MitsubishiTanabeCollaborativeAgreementtMember" xlink:title="MitsubishiTanabeCollaborativeAgreementtMember"/>
    <label xlink:type="resource" xlink:label="label_MitsubishiTanabeCollaborativeAgreementtMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MitsubishiTanabeCollaborativeAgreementtMember" xml:lang="en-US" id="label_MitsubishiTanabeCollaborativeAgreementtMember">Mitsubishi Tanabe Pharma Corporation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MitsubishiTanabeCollaborativeAgreementtMember" xlink:to="label_MitsubishiTanabeCollaborativeAgreementtMember" xlink:title="label: MitsubishiTanabeCollaborativeAgreementtMember to label_MitsubishiTanabeCollaborativeAgreementtMember"/>
    <label xlink:type="resource" xlink:label="label_MitsubishiTanabeCollaborativeAgreementtMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_MitsubishiTanabeCollaborativeAgreementtMember" xml:lang="en-US" id="label_MitsubishiTanabeCollaborativeAgreementtMember_2">Collaboration agreement entered into with Mitsubishi Tanabe Pharma Corporation for the development and commercialization of a product of the entity.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MitsubishiTanabeCollaborativeAgreementtMember" xlink:to="label_MitsubishiTanabeCollaborativeAgreementtMember_2" xlink:title="label: MitsubishiTanabeCollaborativeAgreementtMember to label_MitsubishiTanabeCollaborativeAgreementtMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfCollaborativeArrangementAgreementsLineItems" xlink:label="ScheduleOfCollaborativeArrangementAgreementsLineItems" xlink:title="ScheduleOfCollaborativeArrangementAgreementsLineItems"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfCollaborativeArrangementAgreementsLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfCollaborativeArrangementAgreementsLineItems" xml:lang="en-US" id="label_ScheduleOfCollaborativeArrangementAgreementsLineItems">Schedule of Collaborative Arrangements</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfCollaborativeArrangementAgreementsLineItems" xlink:to="label_ScheduleOfCollaborativeArrangementAgreementsLineItems" xlink:title="label: ScheduleOfCollaborativeArrangementAgreementsLineItems to label_ScheduleOfCollaborativeArrangementAgreementsLineItems"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfCollaborativeArrangementAgreementsLineItems_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfCollaborativeArrangementAgreementsLineItems" xml:lang="en-US" id="label_ScheduleOfCollaborativeArrangementAgreementsLineItems_2">Schedule of Collaborative Arrangement Agreements [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfCollaborativeArrangementAgreementsLineItems" xlink:to="label_ScheduleOfCollaborativeArrangementAgreementsLineItems_2" xlink:title="label: ScheduleOfCollaborativeArrangementAgreementsLineItems to label_ScheduleOfCollaborativeArrangementAgreementsLineItems"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementDevelopmentCostContributionPercent" xlink:label="CollaborativeArrangementDevelopmentCostContributionPercent" xlink:title="CollaborativeArrangementDevelopmentCostContributionPercent"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementDevelopmentCostContributionPercent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CollaborativeArrangementDevelopmentCostContributionPercent" xml:lang="en-US" id="label_CollaborativeArrangementDevelopmentCostContributionPercent">Drug development costs to be paid by collaborator (as a percent)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementDevelopmentCostContributionPercent" xlink:to="label_CollaborativeArrangementDevelopmentCostContributionPercent" xlink:title="label: CollaborativeArrangementDevelopmentCostContributionPercent to label_CollaborativeArrangementDevelopmentCostContributionPercent"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementDevelopmentCostContributionPercent_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaborativeArrangementDevelopmentCostContributionPercent" xml:lang="en-US" id="label_CollaborativeArrangementDevelopmentCostContributionPercent_2">Percent of total development cost for the parties' territories, as specified in the collaboration agreement, that is to be funded by the other party to the agreement.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementDevelopmentCostContributionPercent" xlink:to="label_CollaborativeArrangementDevelopmentCostContributionPercent_2" xlink:title="label: CollaborativeArrangementDevelopmentCostContributionPercent to label_CollaborativeArrangementDevelopmentCostContributionPercent"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementDevelopmentCostContributionPercent_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementDevelopmentCostContributionPercent" xml:lang="en-US" id="label_CollaborativeArrangementDevelopmentCostContributionPercent_3">Collaborative Arrangement Development Cost Contribution Percent</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementDevelopmentCostContributionPercent" xlink:to="label_CollaborativeArrangementDevelopmentCostContributionPercent_3" xlink:title="label: CollaborativeArrangementDevelopmentCostContributionPercent to label_CollaborativeArrangementDevelopmentCostContributionPercent"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementUpFrontLicenseFee" xlink:label="CollaborativeArrangementUpFrontLicenseFee" xlink:title="CollaborativeArrangementUpFrontLicenseFee"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementUpFrontLicenseFee" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementUpFrontLicenseFee" xml:lang="en-US" id="label_CollaborativeArrangementUpFrontLicenseFee">Collaborative Arrangement Up-front License Fee</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementUpFrontLicenseFee" xlink:to="label_CollaborativeArrangementUpFrontLicenseFee" xlink:title="label: CollaborativeArrangementUpFrontLicenseFee to label_CollaborativeArrangementUpFrontLicenseFee"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementUpFrontLicenseFee_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CollaborativeArrangementUpFrontLicenseFee" xml:lang="en-US" id="label_CollaborativeArrangementUpFrontLicenseFee_2">Up-front license payment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementUpFrontLicenseFee" xlink:to="label_CollaborativeArrangementUpFrontLicenseFee_2" xlink:title="label: CollaborativeArrangementUpFrontLicenseFee to label_CollaborativeArrangementUpFrontLicenseFee"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementUpFrontLicenseFee_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaborativeArrangementUpFrontLicenseFee" xml:lang="en-US" id="label_CollaborativeArrangementUpFrontLicenseFee_3">The amount of the up-front license fee received by the entity pursuant to a collaborative arrangement.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementUpFrontLicenseFee" xlink:to="label_CollaborativeArrangementUpFrontLicenseFee_3" xlink:title="label: CollaborativeArrangementUpFrontLicenseFee to label_CollaborativeArrangementUpFrontLicenseFee"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_DeferredRevenueAdjustmentOfPeriodicRevenueRecognitionPerQuarter" xlink:label="DeferredRevenueAdjustmentOfPeriodicRevenueRecognitionPerQuarter" xlink:title="DeferredRevenueAdjustmentOfPeriodicRevenueRecognitionPerQuarter"/>
    <label xlink:type="resource" xlink:label="label_DeferredRevenueAdjustmentOfPeriodicRevenueRecognitionPerQuarter" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DeferredRevenueAdjustmentOfPeriodicRevenueRecognitionPerQuarter" xml:lang="en-US" id="label_DeferredRevenueAdjustmentOfPeriodicRevenueRecognitionPerQuarter">Deferred Revenue Adjustment of Periodic Revenue Recognition per Quarter</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredRevenueAdjustmentOfPeriodicRevenueRecognitionPerQuarter" xlink:to="label_DeferredRevenueAdjustmentOfPeriodicRevenueRecognitionPerQuarter" xlink:title="label: DeferredRevenueAdjustmentOfPeriodicRevenueRecognitionPerQuarter to label_DeferredRevenueAdjustmentOfPeriodicRevenueRecognitionPerQuarter"/>
    <label xlink:type="resource" xlink:label="label_DeferredRevenueAdjustmentOfPeriodicRevenueRecognitionPerQuarter_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DeferredRevenueAdjustmentOfPeriodicRevenueRecognitionPerQuarter" xml:lang="en-US" id="label_DeferredRevenueAdjustmentOfPeriodicRevenueRecognitionPerQuarter_2">Increase (decrease) in the original amount of revenue recognized in a fiscal quarter from a deferred revenue arrangement.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredRevenueAdjustmentOfPeriodicRevenueRecognitionPerQuarter" xlink:to="label_DeferredRevenueAdjustmentOfPeriodicRevenueRecognitionPerQuarter_2" xlink:title="label: DeferredRevenueAdjustmentOfPeriodicRevenueRecognitionPerQuarter to label_DeferredRevenueAdjustmentOfPeriodicRevenueRecognitionPerQuarter"/>
    <label xlink:type="resource" xlink:label="label_DeferredRevenueAdjustmentOfPeriodicRevenueRecognitionPerQuarter_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DeferredRevenueAdjustmentOfPeriodicRevenueRecognitionPerQuarter" xml:lang="en-US" id="label_DeferredRevenueAdjustmentOfPeriodicRevenueRecognitionPerQuarter_3">Decrease in revenue recognition per quarter due to change in estimate regarding period of performance under Janssen collaboration agreement</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredRevenueAdjustmentOfPeriodicRevenueRecognitionPerQuarter" xlink:to="label_DeferredRevenueAdjustmentOfPeriodicRevenueRecognitionPerQuarter_3" xlink:title="label: DeferredRevenueAdjustmentOfPeriodicRevenueRecognitionPerQuarter to label_DeferredRevenueAdjustmentOfPeriodicRevenueRecognitionPerQuarter"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementContingentConsiderationUpperEndOfRange" xlink:label="CollaborativeArrangementContingentConsiderationUpperEndOfRange" xlink:title="CollaborativeArrangementContingentConsiderationUpperEndOfRange"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementContingentConsiderationUpperEndOfRange" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementContingentConsiderationUpperEndOfRange" xml:lang="en-US" id="label_CollaborativeArrangementContingentConsiderationUpperEndOfRange">Collaborative Arrangement Contingent Consideration, Upper End of Range</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementContingentConsiderationUpperEndOfRange" xlink:to="label_CollaborativeArrangementContingentConsiderationUpperEndOfRange" xlink:title="label: CollaborativeArrangementContingentConsiderationUpperEndOfRange to label_CollaborativeArrangementContingentConsiderationUpperEndOfRange"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementContingentConsiderationUpperEndOfRange_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CollaborativeArrangementContingentConsiderationUpperEndOfRange" xml:lang="en-US" id="label_CollaborativeArrangementContingentConsiderationUpperEndOfRange_2">Maximum value of contingent milestone payments under collaboration agreement</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementContingentConsiderationUpperEndOfRange" xlink:to="label_CollaborativeArrangementContingentConsiderationUpperEndOfRange_2" xlink:title="label: CollaborativeArrangementContingentConsiderationUpperEndOfRange to label_CollaborativeArrangementContingentConsiderationUpperEndOfRange"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementContingentConsiderationUpperEndOfRange_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaborativeArrangementContingentConsiderationUpperEndOfRange" xml:lang="en-US" id="label_CollaborativeArrangementContingentConsiderationUpperEndOfRange_3">The upper end of the range of the aggregate amount of contingent milestone payments which may be received by the entity pursuant to the collaborative arrangement.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementContingentConsiderationUpperEndOfRange" xlink:to="label_CollaborativeArrangementContingentConsiderationUpperEndOfRange_3" xlink:title="label: CollaborativeArrangementContingentConsiderationUpperEndOfRange to label_CollaborativeArrangementContingentConsiderationUpperEndOfRange"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementContingentConsiderationEarnedGross" xlink:label="CollaborativeArrangementContingentConsiderationEarnedGross" xlink:title="CollaborativeArrangementContingentConsiderationEarnedGross"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementContingentConsiderationEarnedGross" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementContingentConsiderationEarnedGross" xml:lang="en-US" id="label_CollaborativeArrangementContingentConsiderationEarnedGross">Collaborative Arrangement Contingent Consideration Earned, Gross</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementContingentConsiderationEarnedGross" xlink:to="label_CollaborativeArrangementContingentConsiderationEarnedGross" xlink:title="label: CollaborativeArrangementContingentConsiderationEarnedGross to label_CollaborativeArrangementContingentConsiderationEarnedGross"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementContingentConsiderationEarnedGross_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CollaborativeArrangementContingentConsiderationEarnedGross" xml:lang="en-US" id="label_CollaborativeArrangementContingentConsiderationEarnedGross_2">Total contingent milestone payments earned</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementContingentConsiderationEarnedGross" xlink:to="label_CollaborativeArrangementContingentConsiderationEarnedGross_2" xlink:title="label: CollaborativeArrangementContingentConsiderationEarnedGross to label_CollaborativeArrangementContingentConsiderationEarnedGross"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementContingentConsiderationEarnedGross_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaborativeArrangementContingentConsiderationEarnedGross" xml:lang="en-US" id="label_CollaborativeArrangementContingentConsiderationEarnedGross_3">The total amount of contingent milestone payments earned to date pursuant to the collaboration agreement including a $50 million milestone payment that was earned in the first quarter of 2011 in connection with the EMA acceptance of the MAA for telaprevir.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementContingentConsiderationEarnedGross" xlink:to="label_CollaborativeArrangementContingentConsiderationEarnedGross_3" xlink:title="label: CollaborativeArrangementContingentConsiderationEarnedGross to label_CollaborativeArrangementContingentConsiderationEarnedGross"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementContingentConsiderationUnearnedRevenueUpperEndOfRange" xlink:label="CollaborativeArrangementContingentConsiderationUnearnedRevenueUpperEndOfRange" xlink:title="CollaborativeArrangementContingentConsiderationUnearnedRevenueUpperEndOfRange"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementContingentConsiderationUnearnedRevenueUpperEndOfRange" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaborativeArrangementContingentConsiderationUnearnedRevenueUpperEndOfRange" xml:lang="en-US" id="label_CollaborativeArrangementContingentConsiderationUnearnedRevenueUpperEndOfRange">The upper end of the range of the aggregate amount of unearned contingent milestone payments, which may be received in the future by the entity pursuant to the collaborative arrangement.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementContingentConsiderationUnearnedRevenueUpperEndOfRange" xlink:to="label_CollaborativeArrangementContingentConsiderationUnearnedRevenueUpperEndOfRange" xlink:title="label: CollaborativeArrangementContingentConsiderationUnearnedRevenueUpperEndOfRange to label_CollaborativeArrangementContingentConsiderationUnearnedRevenueUpperEndOfRange"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementContingentConsiderationUnearnedRevenueUpperEndOfRange_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CollaborativeArrangementContingentConsiderationUnearnedRevenueUpperEndOfRange" xml:lang="en-US" id="label_CollaborativeArrangementContingentConsiderationUnearnedRevenueUpperEndOfRange_2">Maximum value of unearned contingent milestone payments under agreement</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementContingentConsiderationUnearnedRevenueUpperEndOfRange" xlink:to="label_CollaborativeArrangementContingentConsiderationUnearnedRevenueUpperEndOfRange_2" xlink:title="label: CollaborativeArrangementContingentConsiderationUnearnedRevenueUpperEndOfRange to label_CollaborativeArrangementContingentConsiderationUnearnedRevenueUpperEndOfRange"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementContingentConsiderationUnearnedRevenueUpperEndOfRange_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementContingentConsiderationUnearnedRevenueUpperEndOfRange" xml:lang="en-US" id="label_CollaborativeArrangementContingentConsiderationUnearnedRevenueUpperEndOfRange_3">Collaborative Arrangement Contingent Consideration Unearned Revenue, Upper End of Range</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementContingentConsiderationUnearnedRevenueUpperEndOfRange" xlink:to="label_CollaborativeArrangementContingentConsiderationUnearnedRevenueUpperEndOfRange_3" xlink:title="label: CollaborativeArrangementContingentConsiderationUnearnedRevenueUpperEndOfRange to label_CollaborativeArrangementContingentConsiderationUnearnedRevenueUpperEndOfRange"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementLicenseFeePaidOnAmendment" xlink:label="CollaborativeArrangementLicenseFeePaidOnAmendment" xlink:title="CollaborativeArrangementLicenseFeePaidOnAmendment"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementLicenseFeePaidOnAmendment" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementLicenseFeePaidOnAmendment" xml:lang="en-US" id="label_CollaborativeArrangementLicenseFeePaidOnAmendment">Collaborative Arrangement License Fee Paid on Amendment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementLicenseFeePaidOnAmendment" xlink:to="label_CollaborativeArrangementLicenseFeePaidOnAmendment" xlink:title="label: CollaborativeArrangementLicenseFeePaidOnAmendment to label_CollaborativeArrangementLicenseFeePaidOnAmendment"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementLicenseFeePaidOnAmendment_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaborativeArrangementLicenseFeePaidOnAmendment" xml:lang="en-US" id="label_CollaborativeArrangementLicenseFeePaidOnAmendment_2">The amount of the license fee received by the entity upon amendment of a collaborative agreement.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementLicenseFeePaidOnAmendment" xlink:to="label_CollaborativeArrangementLicenseFeePaidOnAmendment_2" xlink:title="label: CollaborativeArrangementLicenseFeePaidOnAmendment to label_CollaborativeArrangementLicenseFeePaidOnAmendment"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementLicenseFeePaidOnAmendment_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CollaborativeArrangementLicenseFeePaidOnAmendment" xml:lang="en-US" id="label_CollaborativeArrangementLicenseFeePaidOnAmendment_3">License fee paid upon amendment of agreement</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementLicenseFeePaidOnAmendment" xlink:to="label_CollaborativeArrangementLicenseFeePaidOnAmendment_3" xlink:title="label: CollaborativeArrangementLicenseFeePaidOnAmendment to label_CollaborativeArrangementLicenseFeePaidOnAmendment"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementNoticePeriodRequiredForTerminationDays" xlink:label="CollaborativeArrangementNoticePeriodRequiredForTerminationDays" xlink:title="CollaborativeArrangementNoticePeriodRequiredForTerminationDays"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementNoticePeriodRequiredForTerminationDays" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementNoticePeriodRequiredForTerminationDays" xml:lang="en-US" id="label_CollaborativeArrangementNoticePeriodRequiredForTerminationDays">Collaborative Arrangement Notice Period Required for Termination Days</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementNoticePeriodRequiredForTerminationDays" xlink:to="label_CollaborativeArrangementNoticePeriodRequiredForTerminationDays" xlink:title="label: CollaborativeArrangementNoticePeriodRequiredForTerminationDays to label_CollaborativeArrangementNoticePeriodRequiredForTerminationDays"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementNoticePeriodRequiredForTerminationDays_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaborativeArrangementNoticePeriodRequiredForTerminationDays" xml:lang="en-US" id="label_CollaborativeArrangementNoticePeriodRequiredForTerminationDays_2">The number of days notice required to terminate a collaboration agreement.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementNoticePeriodRequiredForTerminationDays" xlink:to="label_CollaborativeArrangementNoticePeriodRequiredForTerminationDays_2" xlink:title="label: CollaborativeArrangementNoticePeriodRequiredForTerminationDays to label_CollaborativeArrangementNoticePeriodRequiredForTerminationDays"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementNoticePeriodRequiredForTerminationDays_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CollaborativeArrangementNoticePeriodRequiredForTerminationDays" xml:lang="en-US" id="label_CollaborativeArrangementNoticePeriodRequiredForTerminationDays_3">Notice period required to terminate without cause (in days)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementNoticePeriodRequiredForTerminationDays" xlink:to="label_CollaborativeArrangementNoticePeriodRequiredForTerminationDays_3" xlink:title="label: CollaborativeArrangementNoticePeriodRequiredForTerminationDays to label_CollaborativeArrangementNoticePeriodRequiredForTerminationDays"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementContingentMilestonePaymentHighEndOfRange" xlink:label="CollaborativeArrangementContingentMilestonePaymentHighEndOfRange" xlink:title="CollaborativeArrangementContingentMilestonePaymentHighEndOfRange"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementContingentMilestonePaymentHighEndOfRange" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CollaborativeArrangementContingentMilestonePaymentHighEndOfRange" xml:lang="en-US" id="label_CollaborativeArrangementContingentMilestonePaymentHighEndOfRange">Contingent milestone payment, high end of range</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementContingentMilestonePaymentHighEndOfRange" xlink:to="label_CollaborativeArrangementContingentMilestonePaymentHighEndOfRange" xlink:title="label: CollaborativeArrangementContingentMilestonePaymentHighEndOfRange to label_CollaborativeArrangementContingentMilestonePaymentHighEndOfRange"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementContingentMilestonePaymentHighEndOfRange_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaborativeArrangementContingentMilestonePaymentHighEndOfRange" xml:lang="en-US" id="label_CollaborativeArrangementContingentMilestonePaymentHighEndOfRange_2">The high end of the range of the contingent milestone payments the entity may receive in the future pursuant to a collaboration agreement.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementContingentMilestonePaymentHighEndOfRange" xlink:to="label_CollaborativeArrangementContingentMilestonePaymentHighEndOfRange_2" xlink:title="label: CollaborativeArrangementContingentMilestonePaymentHighEndOfRange to label_CollaborativeArrangementContingentMilestonePaymentHighEndOfRange"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementContingentMilestonePaymentHighEndOfRange_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementContingentMilestonePaymentHighEndOfRange" xml:lang="en-US" id="label_CollaborativeArrangementContingentMilestonePaymentHighEndOfRange_3">Collaborative Arrangement Contingent Milestone Payment High End of Range</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementContingentMilestonePaymentHighEndOfRange" xlink:to="label_CollaborativeArrangementContingentMilestonePaymentHighEndOfRange_3" xlink:title="label: CollaborativeArrangementContingentMilestonePaymentHighEndOfRange to label_CollaborativeArrangementContingentMilestonePaymentHighEndOfRange"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementContingentMilestonePaymentLowEndOfRange" xlink:label="CollaborativeArrangementContingentMilestonePaymentLowEndOfRange" xlink:title="CollaborativeArrangementContingentMilestonePaymentLowEndOfRange"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementContingentMilestonePaymentLowEndOfRange" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementContingentMilestonePaymentLowEndOfRange" xml:lang="en-US" id="label_CollaborativeArrangementContingentMilestonePaymentLowEndOfRange">Collaborative Arrangement Contingent Milestone Payment Low End of Range</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementContingentMilestonePaymentLowEndOfRange" xlink:to="label_CollaborativeArrangementContingentMilestonePaymentLowEndOfRange" xlink:title="label: CollaborativeArrangementContingentMilestonePaymentLowEndOfRange to label_CollaborativeArrangementContingentMilestonePaymentLowEndOfRange"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementContingentMilestonePaymentLowEndOfRange_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaborativeArrangementContingentMilestonePaymentLowEndOfRange" xml:lang="en-US" id="label_CollaborativeArrangementContingentMilestonePaymentLowEndOfRange_2">The low end of the range of the contingent milestone payments the entity may receive in the future pursuant to a collaboration agreement.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementContingentMilestonePaymentLowEndOfRange" xlink:to="label_CollaborativeArrangementContingentMilestonePaymentLowEndOfRange_2" xlink:title="label: CollaborativeArrangementContingentMilestonePaymentLowEndOfRange to label_CollaborativeArrangementContingentMilestonePaymentLowEndOfRange"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementContingentMilestonePaymentLowEndOfRange_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CollaborativeArrangementContingentMilestonePaymentLowEndOfRange" xml:lang="en-US" id="label_CollaborativeArrangementContingentMilestonePaymentLowEndOfRange_3">Contingent milestone payment, low end of range</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementContingentMilestonePaymentLowEndOfRange" xlink:to="label_CollaborativeArrangementContingentMilestonePaymentLowEndOfRange_3" xlink:title="label: CollaborativeArrangementContingentMilestonePaymentLowEndOfRange to label_CollaborativeArrangementContingentMilestonePaymentLowEndOfRange"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_TieredRoyaltyAveragePercentOfNetSales" xlink:label="TieredRoyaltyAveragePercentOfNetSales" xlink:title="TieredRoyaltyAveragePercentOfNetSales"/>
    <label xlink:type="resource" xlink:label="label_TieredRoyaltyAveragePercentOfNetSales" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_TieredRoyaltyAveragePercentOfNetSales" xml:lang="en-US" id="label_TieredRoyaltyAveragePercentOfNetSales">Tiered Royalty Average Percent of Net Sales</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TieredRoyaltyAveragePercentOfNetSales" xlink:to="label_TieredRoyaltyAveragePercentOfNetSales" xlink:title="label: TieredRoyaltyAveragePercentOfNetSales to label_TieredRoyaltyAveragePercentOfNetSales"/>
    <label xlink:type="resource" xlink:label="label_TieredRoyaltyAveragePercentOfNetSales_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_TieredRoyaltyAveragePercentOfNetSales" xml:lang="en-US" id="label_TieredRoyaltyAveragePercentOfNetSales_2">The average expected royalty rate as a percent of net sales based on a tiered royalty schedule included in the collaboration agreement.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TieredRoyaltyAveragePercentOfNetSales" xlink:to="label_TieredRoyaltyAveragePercentOfNetSales_2" xlink:title="label: TieredRoyaltyAveragePercentOfNetSales to label_TieredRoyaltyAveragePercentOfNetSales"/>
    <label xlink:type="resource" xlink:label="label_TieredRoyaltyAveragePercentOfNetSales_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_TieredRoyaltyAveragePercentOfNetSales" xml:lang="en-US" id="label_TieredRoyaltyAveragePercentOfNetSales_3">Tiered royalty average range, as a percentage of net sales in the Janssen territories</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TieredRoyaltyAveragePercentOfNetSales" xlink:to="label_TieredRoyaltyAveragePercentOfNetSales_3" xlink:title="label: TieredRoyaltyAveragePercentOfNetSales to label_TieredRoyaltyAveragePercentOfNetSales"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementNumberOfFinancialTransactionsRelatedToFutureMilestones" xlink:label="CollaborativeArrangementNumberOfFinancialTransactionsRelatedToFutureMilestones" xlink:title="CollaborativeArrangementNumberOfFinancialTransactionsRelatedToFutureMilestones"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementNumberOfFinancialTransactionsRelatedToFutureMilestones" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementNumberOfFinancialTransactionsRelatedToFutureMilestones" xml:lang="en-US" id="label_CollaborativeArrangementNumberOfFinancialTransactionsRelatedToFutureMilestones">Collaborative Arrangement Number of Financial Transactions Related to Future Milestones</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementNumberOfFinancialTransactionsRelatedToFutureMilestones" xlink:to="label_CollaborativeArrangementNumberOfFinancialTransactionsRelatedToFutureMilestones" xlink:title="label: CollaborativeArrangementNumberOfFinancialTransactionsRelatedToFutureMilestones to label_CollaborativeArrangementNumberOfFinancialTransactionsRelatedToFutureMilestones"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementNumberOfFinancialTransactionsRelatedToFutureMilestones_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CollaborativeArrangementNumberOfFinancialTransactionsRelatedToFutureMilestones" xml:lang="en-US" id="label_CollaborativeArrangementNumberOfFinancialTransactionsRelatedToFutureMilestones_2">Number of financial transactions entered into related to milestones</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementNumberOfFinancialTransactionsRelatedToFutureMilestones" xlink:to="label_CollaborativeArrangementNumberOfFinancialTransactionsRelatedToFutureMilestones_2" xlink:title="label: CollaborativeArrangementNumberOfFinancialTransactionsRelatedToFutureMilestones to label_CollaborativeArrangementNumberOfFinancialTransactionsRelatedToFutureMilestones"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementNumberOfFinancialTransactionsRelatedToFutureMilestones_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaborativeArrangementNumberOfFinancialTransactionsRelatedToFutureMilestones" xml:lang="en-US" id="label_CollaborativeArrangementNumberOfFinancialTransactionsRelatedToFutureMilestones_3">The number of financial transactions entered into by the Entity related to achievement of the filing, approval and launch milestones in the European Union, pursuant to the collaboration agreement.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementNumberOfFinancialTransactionsRelatedToFutureMilestones" xlink:to="label_CollaborativeArrangementNumberOfFinancialTransactionsRelatedToFutureMilestones_3" xlink:title="label: CollaborativeArrangementNumberOfFinancialTransactionsRelatedToFutureMilestones to label_CollaborativeArrangementNumberOfFinancialTransactionsRelatedToFutureMilestones"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementContingentConsiderationEarnedUponProductLaunchMilestone" xlink:label="CollaborativeArrangementContingentConsiderationEarnedUponProductLaunchMilestone" xlink:title="CollaborativeArrangementContingentConsiderationEarnedUponProductLaunchMilestone"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementContingentConsiderationEarnedUponProductLaunchMilestone" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementContingentConsiderationEarnedUponProductLaunchMilestone" xml:lang="en-US" id="label_CollaborativeArrangementContingentConsiderationEarnedUponProductLaunchMilestone">Collaborative Arrangement Contingent Consideration Earned Upon Product Launch Milestone</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementContingentConsiderationEarnedUponProductLaunchMilestone" xlink:to="label_CollaborativeArrangementContingentConsiderationEarnedUponProductLaunchMilestone" xlink:title="label: CollaborativeArrangementContingentConsiderationEarnedUponProductLaunchMilestone to label_CollaborativeArrangementContingentConsiderationEarnedUponProductLaunchMilestone"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementContingentConsiderationEarnedUponProductLaunchMilestone_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaborativeArrangementContingentConsiderationEarnedUponProductLaunchMilestone" xml:lang="en-US" id="label_CollaborativeArrangementContingentConsiderationEarnedUponProductLaunchMilestone_2">The amount to be earned upon achievement of the product launch milestones, pursuant to the collaboration agreement.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementContingentConsiderationEarnedUponProductLaunchMilestone" xlink:to="label_CollaborativeArrangementContingentConsiderationEarnedUponProductLaunchMilestone_2" xlink:title="label: CollaborativeArrangementContingentConsiderationEarnedUponProductLaunchMilestone to label_CollaborativeArrangementContingentConsiderationEarnedUponProductLaunchMilestone"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementContingentConsiderationEarnedUponProductLaunchMilestone_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CollaborativeArrangementContingentConsiderationEarnedUponProductLaunchMilestone" xml:lang="en-US" id="label_CollaborativeArrangementContingentConsiderationEarnedUponProductLaunchMilestone_3">Revenue to be earned upon achievement of the launch milestones</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementContingentConsiderationEarnedUponProductLaunchMilestone" xlink:to="label_CollaborativeArrangementContingentConsiderationEarnedUponProductLaunchMilestone_3" xlink:title="label: CollaborativeArrangementContingentConsiderationEarnedUponProductLaunchMilestone to label_CollaborativeArrangementContingentConsiderationEarnedUponProductLaunchMilestone"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ViroChemPharmaMember" xlink:label="ViroChemPharmaMember" xlink:title="ViroChemPharmaMember"/>
    <label xlink:type="resource" xlink:label="label_ViroChemPharmaMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ViroChemPharmaMember" xml:lang="en-US" id="label_ViroChemPharmaMember">ViroChem Pharma Inc.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ViroChemPharmaMember" xlink:to="label_ViroChemPharmaMember" xlink:title="label: ViroChemPharmaMember to label_ViroChemPharmaMember"/>
    <label xlink:type="resource" xlink:label="label_ViroChemPharmaMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ViroChemPharmaMember" xml:lang="en-US" id="label_ViroChemPharmaMember_2">The purchase of ViroChem Pharma Inc.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ViroChemPharmaMember" xlink:to="label_ViroChemPharmaMember_2" xlink:title="label: ViroChemPharmaMember to label_ViroChemPharmaMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_BusinessAcquisitionNumberOfClinicalDevelopmentStageDrugsAcquired" xlink:label="BusinessAcquisitionNumberOfClinicalDevelopmentStageDrugsAcquired" xlink:title="BusinessAcquisitionNumberOfClinicalDevelopmentStageDrugsAcquired"/>
    <label xlink:type="resource" xlink:label="label_BusinessAcquisitionNumberOfClinicalDevelopmentStageDrugsAcquired" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BusinessAcquisitionNumberOfClinicalDevelopmentStageDrugsAcquired" xml:lang="en-US" id="label_BusinessAcquisitionNumberOfClinicalDevelopmentStageDrugsAcquired">Business Acquisition Number of Clinical Development Stage Drugs Acquired</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionNumberOfClinicalDevelopmentStageDrugsAcquired" xlink:to="label_BusinessAcquisitionNumberOfClinicalDevelopmentStageDrugsAcquired" xlink:title="label: BusinessAcquisitionNumberOfClinicalDevelopmentStageDrugsAcquired to label_BusinessAcquisitionNumberOfClinicalDevelopmentStageDrugsAcquired"/>
    <label xlink:type="resource" xlink:label="label_BusinessAcquisitionNumberOfClinicalDevelopmentStageDrugsAcquired_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_BusinessAcquisitionNumberOfClinicalDevelopmentStageDrugsAcquired" xml:lang="en-US" id="label_BusinessAcquisitionNumberOfClinicalDevelopmentStageDrugsAcquired_2">Number of clinical-development stage HCV drugs added to drug development portfolio</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionNumberOfClinicalDevelopmentStageDrugsAcquired" xlink:to="label_BusinessAcquisitionNumberOfClinicalDevelopmentStageDrugsAcquired_2" xlink:title="label: BusinessAcquisitionNumberOfClinicalDevelopmentStageDrugsAcquired to label_BusinessAcquisitionNumberOfClinicalDevelopmentStageDrugsAcquired"/>
    <label xlink:type="resource" xlink:label="label_BusinessAcquisitionNumberOfClinicalDevelopmentStageDrugsAcquired_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_BusinessAcquisitionNumberOfClinicalDevelopmentStageDrugsAcquired" xml:lang="en-US" id="label_BusinessAcquisitionNumberOfClinicalDevelopmentStageDrugsAcquired_3">The number of clinical-development stage drugs that were added to the entity's portfolio.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionNumberOfClinicalDevelopmentStageDrugsAcquired" xlink:to="label_BusinessAcquisitionNumberOfClinicalDevelopmentStageDrugsAcquired_3" xlink:title="label: BusinessAcquisitionNumberOfClinicalDevelopmentStageDrugsAcquired to label_BusinessAcquisitionNumberOfClinicalDevelopmentStageDrugsAcquired"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_FairValueOfAcquiredIndefiniteLivedIntangibleAssetClinicalDrugCandidate" xlink:label="FairValueOfAcquiredIndefiniteLivedIntangibleAssetClinicalDrugCandidate" xlink:title="FairValueOfAcquiredIndefiniteLivedIntangibleAssetClinicalDrugCandidate"/>
    <label xlink:type="resource" xlink:label="label_FairValueOfAcquiredIndefiniteLivedIntangibleAssetClinicalDrugCandidate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueOfAcquiredIndefiniteLivedIntangibleAssetClinicalDrugCandidate" xml:lang="en-US" id="label_FairValueOfAcquiredIndefiniteLivedIntangibleAssetClinicalDrugCandidate">Fair Value of Acquired Indefinite Lived Intangible Asset Clinical Drug Candidate</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueOfAcquiredIndefiniteLivedIntangibleAssetClinicalDrugCandidate" xlink:to="label_FairValueOfAcquiredIndefiniteLivedIntangibleAssetClinicalDrugCandidate" xlink:title="label: FairValueOfAcquiredIndefiniteLivedIntangibleAssetClinicalDrugCandidate to label_FairValueOfAcquiredIndefiniteLivedIntangibleAssetClinicalDrugCandidate"/>
    <label xlink:type="resource" xlink:label="label_FairValueOfAcquiredIndefiniteLivedIntangibleAssetClinicalDrugCandidate_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FairValueOfAcquiredIndefiniteLivedIntangibleAssetClinicalDrugCandidate" xml:lang="en-US" id="label_FairValueOfAcquiredIndefiniteLivedIntangibleAssetClinicalDrugCandidate_2">Fair value at date of acquisition</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueOfAcquiredIndefiniteLivedIntangibleAssetClinicalDrugCandidate" xlink:to="label_FairValueOfAcquiredIndefiniteLivedIntangibleAssetClinicalDrugCandidate_2" xlink:title="label: FairValueOfAcquiredIndefiniteLivedIntangibleAssetClinicalDrugCandidate to label_FairValueOfAcquiredIndefiniteLivedIntangibleAssetClinicalDrugCandidate"/>
    <label xlink:type="resource" xlink:label="label_FairValueOfAcquiredIndefiniteLivedIntangibleAssetClinicalDrugCandidate_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_FairValueOfAcquiredIndefiniteLivedIntangibleAssetClinicalDrugCandidate" xml:lang="en-US" id="label_FairValueOfAcquiredIndefiniteLivedIntangibleAssetClinicalDrugCandidate_3">The fair value as of the date of acquisition of a clinical drug candidate included in the intangible assets acquired.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueOfAcquiredIndefiniteLivedIntangibleAssetClinicalDrugCandidate" xlink:to="label_FairValueOfAcquiredIndefiniteLivedIntangibleAssetClinicalDrugCandidate_3" xlink:title="label: FairValueOfAcquiredIndefiniteLivedIntangibleAssetClinicalDrugCandidate to label_FairValueOfAcquiredIndefiniteLivedIntangibleAssetClinicalDrugCandidate"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_DebtInstrumentChangeOfControlCallPercentOfPrincipalAmountDue" xlink:label="DebtInstrumentChangeOfControlCallPercentOfPrincipalAmountDue" xlink:title="DebtInstrumentChangeOfControlCallPercentOfPrincipalAmountDue"/>
    <label xlink:type="resource" xlink:label="label_DebtInstrumentChangeOfControlCallPercentOfPrincipalAmountDue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentChangeOfControlCallPercentOfPrincipalAmountDue" xml:lang="en-US" id="label_DebtInstrumentChangeOfControlCallPercentOfPrincipalAmountDue">Debt Instrument Change of Control Call Percent of Principal Amount Due</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentChangeOfControlCallPercentOfPrincipalAmountDue" xlink:to="label_DebtInstrumentChangeOfControlCallPercentOfPrincipalAmountDue" xlink:title="label: DebtInstrumentChangeOfControlCallPercentOfPrincipalAmountDue to label_DebtInstrumentChangeOfControlCallPercentOfPrincipalAmountDue"/>
    <label xlink:type="resource" xlink:label="label_DebtInstrumentChangeOfControlCallPercentOfPrincipalAmountDue_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DebtInstrumentChangeOfControlCallPercentOfPrincipalAmountDue" xml:lang="en-US" id="label_DebtInstrumentChangeOfControlCallPercentOfPrincipalAmountDue_2">The principal amount of the outstanding notes that must be repaid upon call of the notes by the note holders due to a change in control of the Company, pursuant to the debt agreement, stated as a percent of the principal face amount.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentChangeOfControlCallPercentOfPrincipalAmountDue" xlink:to="label_DebtInstrumentChangeOfControlCallPercentOfPrincipalAmountDue_2" xlink:title="label: DebtInstrumentChangeOfControlCallPercentOfPrincipalAmountDue to label_DebtInstrumentChangeOfControlCallPercentOfPrincipalAmountDue"/>
    <label xlink:type="resource" xlink:label="label_DebtInstrumentChangeOfControlCallPercentOfPrincipalAmountDue_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentChangeOfControlCallPercentOfPrincipalAmountDue" xml:lang="en-US" id="label_DebtInstrumentChangeOfControlCallPercentOfPrincipalAmountDue_3">Percent of outstanding 2012 Notes face amount due upon change of control call of notes (as a percent)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentChangeOfControlCallPercentOfPrincipalAmountDue" xlink:to="label_DebtInstrumentChangeOfControlCallPercentOfPrincipalAmountDue_3" xlink:title="label: DebtInstrumentChangeOfControlCallPercentOfPrincipalAmountDue to label_DebtInstrumentChangeOfControlCallPercentOfPrincipalAmountDue"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_EarlyDebtRedemptionPricePercentOfPrincipalAmount" xlink:label="EarlyDebtRedemptionPricePercentOfPrincipalAmount" xlink:title="EarlyDebtRedemptionPricePercentOfPrincipalAmount"/>
    <label xlink:type="resource" xlink:label="label_EarlyDebtRedemptionPricePercentOfPrincipalAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EarlyDebtRedemptionPricePercentOfPrincipalAmount" xml:lang="en-US" id="label_EarlyDebtRedemptionPricePercentOfPrincipalAmount">Early Debt Redemption Price Percent of Principal Amount</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarlyDebtRedemptionPricePercentOfPrincipalAmount" xlink:to="label_EarlyDebtRedemptionPricePercentOfPrincipalAmount" xlink:title="label: EarlyDebtRedemptionPricePercentOfPrincipalAmount to label_EarlyDebtRedemptionPricePercentOfPrincipalAmount"/>
    <label xlink:type="resource" xlink:label="label_EarlyDebtRedemptionPricePercentOfPrincipalAmount_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EarlyDebtRedemptionPricePercentOfPrincipalAmount" xml:lang="en-US" id="label_EarlyDebtRedemptionPricePercentOfPrincipalAmount_2">Percent of outstanding 2012 Notes face amount due upon early redemption (as a percent)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarlyDebtRedemptionPricePercentOfPrincipalAmount" xlink:to="label_EarlyDebtRedemptionPricePercentOfPrincipalAmount_2" xlink:title="label: EarlyDebtRedemptionPricePercentOfPrincipalAmount to label_EarlyDebtRedemptionPricePercentOfPrincipalAmount"/>
    <label xlink:type="resource" xlink:label="label_EarlyDebtRedemptionPricePercentOfPrincipalAmount_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_EarlyDebtRedemptionPricePercentOfPrincipalAmount" xml:lang="en-US" id="label_EarlyDebtRedemptionPricePercentOfPrincipalAmount_3">The portion of the principal face amount that must be repaid to note holders upon the Company's exercise of their right to redeem the notes prior to maturity in accordance with the note agreement, stated as a percent of the principal face amount.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarlyDebtRedemptionPricePercentOfPrincipalAmount" xlink:to="label_EarlyDebtRedemptionPricePercentOfPrincipalAmount_3" xlink:title="label: EarlyDebtRedemptionPricePercentOfPrincipalAmount to label_EarlyDebtRedemptionPricePercentOfPrincipalAmount"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_DebtInstrumentDefaultCallMinimumRepresentationRequired" xlink:label="DebtInstrumentDefaultCallMinimumRepresentationRequired" xlink:title="DebtInstrumentDefaultCallMinimumRepresentationRequired"/>
    <label xlink:type="resource" xlink:label="label_DebtInstrumentDefaultCallMinimumRepresentationRequired" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentDefaultCallMinimumRepresentationRequired" xml:lang="en-US" id="label_DebtInstrumentDefaultCallMinimumRepresentationRequired">Debt Instrument Default Call Minimum Representation Required</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentDefaultCallMinimumRepresentationRequired" xlink:to="label_DebtInstrumentDefaultCallMinimumRepresentationRequired" xlink:title="label: DebtInstrumentDefaultCallMinimumRepresentationRequired to label_DebtInstrumentDefaultCallMinimumRepresentationRequired"/>
    <label xlink:type="resource" xlink:label="label_DebtInstrumentDefaultCallMinimumRepresentationRequired_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentDefaultCallMinimumRepresentationRequired" xml:lang="en-US" id="label_DebtInstrumentDefaultCallMinimumRepresentationRequired_2">Minimum amount of outstanding 2012 Notes required to declare 2012 Notes due in event of default (as a percent)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentDefaultCallMinimumRepresentationRequired" xlink:to="label_DebtInstrumentDefaultCallMinimumRepresentationRequired_2" xlink:title="label: DebtInstrumentDefaultCallMinimumRepresentationRequired to label_DebtInstrumentDefaultCallMinimumRepresentationRequired"/>
    <label xlink:type="resource" xlink:label="label_DebtInstrumentDefaultCallMinimumRepresentationRequired_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DebtInstrumentDefaultCallMinimumRepresentationRequired" xml:lang="en-US" id="label_DebtInstrumentDefaultCallMinimumRepresentationRequired_3">The minimum principal amount of notes outstanding required to declare the principal of the notes due and payable upon occurrence of certain events of default.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentDefaultCallMinimumRepresentationRequired" xlink:to="label_DebtInstrumentDefaultCallMinimumRepresentationRequired_3" xlink:title="label: DebtInstrumentDefaultCallMinimumRepresentationRequired to label_DebtInstrumentDefaultCallMinimumRepresentationRequired"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementAbstract" xlink:label="CollaborativeArrangementAbstract" xlink:title="CollaborativeArrangementAbstract"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CollaborativeArrangementAbstract" xml:lang="en-US" id="label_CollaborativeArrangementAbstract">Sale of Future Milestone Payments</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementAbstract" xlink:to="label_CollaborativeArrangementAbstract" xlink:title="label: CollaborativeArrangementAbstract to label_CollaborativeArrangementAbstract"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementAbstract" xml:lang="en-US" id="label_CollaborativeArrangementAbstract_2">Collaborative Arrangement [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementAbstract" xlink:to="label_CollaborativeArrangementAbstract_2" xlink:title="label: CollaborativeArrangementAbstract to label_CollaborativeArrangementAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementAggregateValueOfFutureMilestonePaymentsSold" xlink:label="CollaborativeArrangementAggregateValueOfFutureMilestonePaymentsSold" xlink:title="CollaborativeArrangementAggregateValueOfFutureMilestonePaymentsSold"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementAggregateValueOfFutureMilestonePaymentsSold" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementAggregateValueOfFutureMilestonePaymentsSold" xml:lang="en-US" id="label_CollaborativeArrangementAggregateValueOfFutureMilestonePaymentsSold">Collaborative Arrangement Aggregate Value of Future Milestone Payments Sold</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementAggregateValueOfFutureMilestonePaymentsSold" xlink:to="label_CollaborativeArrangementAggregateValueOfFutureMilestonePaymentsSold" xlink:title="label: CollaborativeArrangementAggregateValueOfFutureMilestonePaymentsSold to label_CollaborativeArrangementAggregateValueOfFutureMilestonePaymentsSold"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementAggregateValueOfFutureMilestonePaymentsSold_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CollaborativeArrangementAggregateValueOfFutureMilestonePaymentsSold" xml:lang="en-US" id="label_CollaborativeArrangementAggregateValueOfFutureMilestonePaymentsSold_2">Value of potential future launch milestone payments sold pursuant to the Janssen collaboration</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementAggregateValueOfFutureMilestonePaymentsSold" xlink:to="label_CollaborativeArrangementAggregateValueOfFutureMilestonePaymentsSold_2" xlink:title="label: CollaborativeArrangementAggregateValueOfFutureMilestonePaymentsSold to label_CollaborativeArrangementAggregateValueOfFutureMilestonePaymentsSold"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementAggregateValueOfFutureMilestonePaymentsSold_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaborativeArrangementAggregateValueOfFutureMilestonePaymentsSold" xml:lang="en-US" id="label_CollaborativeArrangementAggregateValueOfFutureMilestonePaymentsSold_3">The aggregate value of potential future launch milestone payments to be received pursuant to the Janssen collaboration agreement that have been sold to a third party.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementAggregateValueOfFutureMilestonePaymentsSold" xlink:to="label_CollaborativeArrangementAggregateValueOfFutureMilestonePaymentsSold_3" xlink:title="label: CollaborativeArrangementAggregateValueOfFutureMilestonePaymentsSold to label_CollaborativeArrangementAggregateValueOfFutureMilestonePaymentsSold"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ProceedsFromSaleOfCollaborativeArrangementFutureMilestonePayments" xlink:label="ProceedsFromSaleOfCollaborativeArrangementFutureMilestonePayments" xlink:title="ProceedsFromSaleOfCollaborativeArrangementFutureMilestonePayments"/>
    <label xlink:type="resource" xlink:label="label_ProceedsFromSaleOfCollaborativeArrangementFutureMilestonePayments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ProceedsFromSaleOfCollaborativeArrangementFutureMilestonePayments" xml:lang="en-US" id="label_ProceedsFromSaleOfCollaborativeArrangementFutureMilestonePayments">Proceeds from Sale of Collaborative Arrangement Future Milestone Payments</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromSaleOfCollaborativeArrangementFutureMilestonePayments" xlink:to="label_ProceedsFromSaleOfCollaborativeArrangementFutureMilestonePayments" xlink:title="label: ProceedsFromSaleOfCollaborativeArrangementFutureMilestonePayments to label_ProceedsFromSaleOfCollaborativeArrangementFutureMilestonePayments"/>
    <label xlink:type="resource" xlink:label="label_ProceedsFromSaleOfCollaborativeArrangementFutureMilestonePayments_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ProceedsFromSaleOfCollaborativeArrangementFutureMilestonePayments" xml:lang="en-US" id="label_ProceedsFromSaleOfCollaborativeArrangementFutureMilestonePayments_2">Proceeds from sale of potential future launch milestone payments pursuant to the Janssen collaboration</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromSaleOfCollaborativeArrangementFutureMilestonePayments" xlink:to="label_ProceedsFromSaleOfCollaborativeArrangementFutureMilestonePayments_2" xlink:title="label: ProceedsFromSaleOfCollaborativeArrangementFutureMilestonePayments to label_ProceedsFromSaleOfCollaborativeArrangementFutureMilestonePayments"/>
    <label xlink:type="resource" xlink:label="label_ProceedsFromSaleOfCollaborativeArrangementFutureMilestonePayments_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ProceedsFromSaleOfCollaborativeArrangementFutureMilestonePayments" xml:lang="en-US" id="label_ProceedsFromSaleOfCollaborativeArrangementFutureMilestonePayments_3">The cash inflow from the sale of potential future launch milestone payments receivable under the Janssen collaborative arrangement.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromSaleOfCollaborativeArrangementFutureMilestonePayments" xlink:to="label_ProceedsFromSaleOfCollaborativeArrangementFutureMilestonePayments_3" xlink:title="label: ProceedsFromSaleOfCollaborativeArrangementFutureMilestonePayments to label_ProceedsFromSaleOfCollaborativeArrangementFutureMilestonePayments"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ExpensesAndGainsLossesAbstract" xlink:label="ExpensesAndGainsLossesAbstract" xlink:title="ExpensesAndGainsLossesAbstract"/>
    <label xlink:type="resource" xlink:label="label_ExpensesAndGainsLossesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ExpensesAndGainsLossesAbstract" xml:lang="en-US" id="label_ExpensesAndGainsLossesAbstract">Expenses and Losses (Gains):</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExpensesAndGainsLossesAbstract" xlink:to="label_ExpensesAndGainsLossesAbstract" xlink:title="label: ExpensesAndGainsLossesAbstract to label_ExpensesAndGainsLossesAbstract"/>
    <label xlink:type="resource" xlink:label="label_ExpensesAndGainsLossesAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ExpensesAndGainsLossesAbstract" xml:lang="en-US" id="label_ExpensesAndGainsLossesAbstract_2">Expenses and Gains (Losses) [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExpensesAndGainsLossesAbstract" xlink:to="label_ExpensesAndGainsLossesAbstract_2" xlink:title="label: ExpensesAndGainsLossesAbstract to label_ExpensesAndGainsLossesAbstract"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_SecuredLongtermDebtCurrentAndNoncurrentAbstract" xlink:label="SecuredLongtermDebtCurrentAndNoncurrentAbstract" xlink:title="SecuredLongtermDebtCurrentAndNoncurrentAbstract"/>
    <label xlink:type="resource" xlink:label="label_SecuredLongtermDebtCurrentAndNoncurrentAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SecuredLongtermDebtCurrentAndNoncurrentAbstract" xml:lang="en-US" id="label_SecuredLongtermDebtCurrentAndNoncurrentAbstract">2012 Notes</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SecuredLongtermDebtCurrentAndNoncurrentAbstract" xlink:to="label_SecuredLongtermDebtCurrentAndNoncurrentAbstract" xlink:title="label: SecuredLongtermDebtCurrentAndNoncurrentAbstract to label_SecuredLongtermDebtCurrentAndNoncurrentAbstract"/>
    <label xlink:type="resource" xlink:label="label_SecuredLongtermDebtCurrentAndNoncurrentAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SecuredLongtermDebtCurrentAndNoncurrentAbstract" xml:lang="en-US" id="label_SecuredLongtermDebtCurrentAndNoncurrentAbstract_2">Secured Debt [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SecuredLongtermDebtCurrentAndNoncurrentAbstract" xlink:to="label_SecuredLongtermDebtCurrentAndNoncurrentAbstract_2" xlink:title="label: SecuredLongtermDebtCurrentAndNoncurrentAbstract to label_SecuredLongtermDebtCurrentAndNoncurrentAbstract"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_LiabilitiesAbstract" xlink:label="LiabilitiesAbstract" xlink:title="LiabilitiesAbstract"/>
    <label xlink:type="resource" xlink:label="label_LiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LiabilitiesAbstract" xml:lang="en-US" id="label_LiabilitiesAbstract">Liabilities:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesAbstract" xlink:to="label_LiabilitiesAbstract" xlink:title="label: LiabilitiesAbstract to label_LiabilitiesAbstract"/>
    <label xlink:type="resource" xlink:label="label_LiabilitiesAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LiabilitiesAbstract" xml:lang="en-US" id="label_LiabilitiesAbstract_2">Liabilities [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesAbstract" xlink:to="label_LiabilitiesAbstract_2" xlink:title="label: LiabilitiesAbstract to label_LiabilitiesAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfComprehensiveIncomeTextBlock" xlink:label="ScheduleOfComprehensiveIncomeTextBlock" xlink:title="ScheduleOfComprehensiveIncomeTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfComprehensiveIncomeTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfComprehensiveIncomeTextBlock" xml:lang="en-US" id="label_ScheduleOfComprehensiveIncomeTextBlock">Schedule of Comprehensive Income [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfComprehensiveIncomeTextBlock" xlink:to="label_ScheduleOfComprehensiveIncomeTextBlock" xlink:title="label: ScheduleOfComprehensiveIncomeTextBlock to label_ScheduleOfComprehensiveIncomeTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfComprehensiveIncomeTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfComprehensiveIncomeTextBlock" xml:lang="en-US" id="label_ScheduleOfComprehensiveIncomeTextBlock_2">This schedule may include the following: 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. Components of comprehensive income include: (1) foreign currency translation adjustments; (2) gains and losses on foreign currency transactions that are designated as, and are effective as, economic hedges of a net investment in a foreign entity; (3) gains and losses on intercompany foreign currency transactions that are of a long-term-investment nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements; (4) change in the market value of a futures contract that qualifies as a hedge of an asset reported at fair value; (5) unrealized holding gains and losses on available-for-sale securities and that resulting from transfers of debt securities from the held-to-maturity category to the available-for-sale category; (6) a net loss recognized as an additional pension liability not yet recognized as net periodic pension cost; and (7) the net gain or loss and net prior service cost or credit for pension plans and other postretirement benefit plans.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfComprehensiveIncomeTextBlock" xlink:to="label_ScheduleOfComprehensiveIncomeTextBlock_2" xlink:title="label: ScheduleOfComprehensiveIncomeTextBlock to label_ScheduleOfComprehensiveIncomeTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfComprehensiveIncomeTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfComprehensiveIncomeTextBlock" xml:lang="en-US" id="label_ScheduleOfComprehensiveIncomeTextBlock_3">Comprehensive Loss</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfComprehensiveIncomeTextBlock" xlink:to="label_ScheduleOfComprehensiveIncomeTextBlock_3" xlink:title="label: ScheduleOfComprehensiveIncomeTextBlock to label_ScheduleOfComprehensiveIncomeTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_IncrementalStockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes" xlink:label="IncrementalStockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes" xlink:title="IncrementalStockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes"/>
    <label xlink:type="resource" xlink:label="label_IncrementalStockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncrementalStockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes" xml:lang="en-US" id="label_IncrementalStockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes">Incremental Stock Issued During Period Shares Exchange for Convertible Subordinated Notes</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncrementalStockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes" xlink:to="label_IncrementalStockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes" xlink:title="label: IncrementalStockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes to label_IncrementalStockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes"/>
    <label xlink:type="resource" xlink:label="label_IncrementalStockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncrementalStockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes" xml:lang="en-US" id="label_IncrementalStockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes_2">Incremental shares issued upon exchange of subordinated notes as compared to terms of 2013 Notes, (in shares)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncrementalStockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes" xlink:to="label_IncrementalStockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes_2" xlink:title="label: IncrementalStockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes to label_IncrementalStockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes"/>
    <label xlink:type="resource" xlink:label="label_IncrementalStockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_IncrementalStockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes" xml:lang="en-US" id="label_IncrementalStockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes_3">The incremental number of shares of stock issued during the period in exchange for convertible subordinated notes.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncrementalStockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes" xlink:to="label_IncrementalStockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes_3" xlink:title="label: IncrementalStockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes to label_IncrementalStockIssuedDuringPeriodSharesExchangeForConvertibleSubordinatedNotes"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfShareBasedCompensationArrangementByArrangementTypeAxis" xlink:label="ScheduleOfShareBasedCompensationArrangementByArrangementTypeAxis" xlink:title="ScheduleOfShareBasedCompensationArrangementByArrangementTypeAxis"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfShareBasedCompensationArrangementByArrangementTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfShareBasedCompensationArrangementByArrangementTypeAxis" xml:lang="en-US" id="label_ScheduleOfShareBasedCompensationArrangementByArrangementTypeAxis">Schedule of Share-based Compensation Arrangement by Arrangement Type [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfShareBasedCompensationArrangementByArrangementTypeAxis" xlink:to="label_ScheduleOfShareBasedCompensationArrangementByArrangementTypeAxis" xlink:title="label: ScheduleOfShareBasedCompensationArrangementByArrangementTypeAxis to label_ScheduleOfShareBasedCompensationArrangementByArrangementTypeAxis"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfShareBasedCompensationArrangementByArrangementTypeAxis_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfShareBasedCompensationArrangementByArrangementTypeAxis" xml:lang="en-US" id="label_ScheduleOfShareBasedCompensationArrangementByArrangementTypeAxis_2">Pertinent data describing and reflecting required disclosures pertaining to arrangement, by type.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfShareBasedCompensationArrangementByArrangementTypeAxis" xlink:to="label_ScheduleOfShareBasedCompensationArrangementByArrangementTypeAxis_2" xlink:title="label: ScheduleOfShareBasedCompensationArrangementByArrangementTypeAxis to label_ScheduleOfShareBasedCompensationArrangementByArrangementTypeAxis"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfShareBasedCompensationArrangementByArrangementTypeDomain" xlink:label="ScheduleOfShareBasedCompensationArrangementByArrangementTypeDomain" xlink:title="ScheduleOfShareBasedCompensationArrangementByArrangementTypeDomain"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfShareBasedCompensationArrangementByArrangementTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfShareBasedCompensationArrangementByArrangementTypeDomain" xml:lang="en-US" id="label_ScheduleOfShareBasedCompensationArrangementByArrangementTypeDomain">Schedule of Share-based Compensation Arrangement by Arrangement Type [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfShareBasedCompensationArrangementByArrangementTypeDomain" xlink:to="label_ScheduleOfShareBasedCompensationArrangementByArrangementTypeDomain" xlink:title="label: ScheduleOfShareBasedCompensationArrangementByArrangementTypeDomain to label_ScheduleOfShareBasedCompensationArrangementByArrangementTypeDomain"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfShareBasedCompensationArrangementByArrangementTypeDomain_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfShareBasedCompensationArrangementByArrangementTypeDomain" xml:lang="en-US" id="label_ScheduleOfShareBasedCompensationArrangementByArrangementTypeDomain_2">Identifies and describes Share-based compensation plans by arrangement program type.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfShareBasedCompensationArrangementByArrangementTypeDomain" xlink:to="label_ScheduleOfShareBasedCompensationArrangementByArrangementTypeDomain_2" xlink:title="label: ScheduleOfShareBasedCompensationArrangementByArrangementTypeDomain to label_ScheduleOfShareBasedCompensationArrangementByArrangementTypeDomain"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_DrJoshuaBogersTransitionArrangementMember" xlink:label="DrJoshuaBogersTransitionArrangementMember" xlink:title="DrJoshuaBogersTransitionArrangementMember"/>
    <label xlink:type="resource" xlink:label="label_DrJoshuaBogersTransitionArrangementMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DrJoshuaBogersTransitionArrangementMember" xml:lang="en-US" id="label_DrJoshuaBogersTransitionArrangementMember">Dr. Joshua Boger's transition arrangement</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DrJoshuaBogersTransitionArrangementMember" xlink:to="label_DrJoshuaBogersTransitionArrangementMember" xlink:title="label: DrJoshuaBogersTransitionArrangementMember to label_DrJoshuaBogersTransitionArrangementMember"/>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DrJoshuaBogersTransitionArrangementMember" xlink:to="label_DrJoshuaBogersTransitionArrangementMember_2" xlink:title="label: DrJoshuaBogersTransitionArrangementMember to label_DrJoshuaBogersTransitionArrangementMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ExecutiveOfficersSeveranceArrangementMember" xlink:label="ExecutiveOfficersSeveranceArrangementMember" xlink:title="ExecutiveOfficersSeveranceArrangementMember"/>
    <label xlink:type="resource" xlink:label="label_ExecutiveOfficersSeveranceArrangementMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ExecutiveOfficersSeveranceArrangementMember" xml:lang="en-US" id="label_ExecutiveOfficersSeveranceArrangementMember">Executive officer's severance arrangement</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExecutiveOfficersSeveranceArrangementMember" xlink:to="label_ExecutiveOfficersSeveranceArrangementMember" xlink:title="label: ExecutiveOfficersSeveranceArrangementMember to label_ExecutiveOfficersSeveranceArrangementMember"/>
    <label xlink:type="resource" xlink:label="label_ExecutiveOfficersSeveranceArrangementMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ExecutiveOfficersSeveranceArrangementMember" xml:lang="en-US" id="label_ExecutiveOfficersSeveranceArrangementMember_2">Describes and executive officer's severance arrangement in connection with stock-based compensation.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExecutiveOfficersSeveranceArrangementMember" xlink:to="label_ExecutiveOfficersSeveranceArrangementMember_2" xlink:title="label: ExecutiveOfficersSeveranceArrangementMember to label_ExecutiveOfficersSeveranceArrangementMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementRevenueRecognizedFromUpfrontPayment" xlink:label="CollaborativeArrangementRevenueRecognizedFromUpfrontPayment" xlink:title="CollaborativeArrangementRevenueRecognizedFromUpfrontPayment"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementRevenueRecognizedFromUpfrontPayment" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementRevenueRecognizedFromUpfrontPayment" xml:lang="en-US" id="label_CollaborativeArrangementRevenueRecognizedFromUpfrontPayment">Collaborative Arrangement Revenue Recognized from up-front Payment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementRevenueRecognizedFromUpfrontPayment" xlink:to="label_CollaborativeArrangementRevenueRecognizedFromUpfrontPayment" xlink:title="label: CollaborativeArrangementRevenueRecognizedFromUpfrontPayment to label_CollaborativeArrangementRevenueRecognizedFromUpfrontPayment"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementRevenueRecognizedFromUpfrontPayment_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CollaborativeArrangementRevenueRecognizedFromUpfrontPayment" xml:lang="en-US" id="label_CollaborativeArrangementRevenueRecognizedFromUpfrontPayment_2">Recognized revenues from the up-front payment</label>
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    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementRevenueRecognizedFromUpfrontPayment_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaborativeArrangementRevenueRecognizedFromUpfrontPayment" xml:lang="en-US" id="label_CollaborativeArrangementRevenueRecognizedFromUpfrontPayment_3">This element represents the revenue recognized from up-front payment from collaborative arrangements.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementRevenueRecognizedFromUpfrontPayment" xlink:to="label_CollaborativeArrangementRevenueRecognizedFromUpfrontPayment_3" xlink:title="label: CollaborativeArrangementRevenueRecognizedFromUpfrontPayment to label_CollaborativeArrangementRevenueRecognizedFromUpfrontPayment"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_GoodwillAndIntangibleAssetsGoodwillPolicyTextBlock" xlink:label="GoodwillAndIntangibleAssetsGoodwillPolicyTextBlock" xlink:title="GoodwillAndIntangibleAssetsGoodwillPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_GoodwillAndIntangibleAssetsGoodwillPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_GoodwillAndIntangibleAssetsGoodwillPolicyTextBlock" xml:lang="en-US" id="label_GoodwillAndIntangibleAssetsGoodwillPolicyTextBlock">Goodwill</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GoodwillAndIntangibleAssetsGoodwillPolicyTextBlock" xlink:to="label_GoodwillAndIntangibleAssetsGoodwillPolicyTextBlock" xlink:title="label: GoodwillAndIntangibleAssetsGoodwillPolicyTextBlock to label_GoodwillAndIntangibleAssetsGoodwillPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_GoodwillAndIntangibleAssetsGoodwillPolicyTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_GoodwillAndIntangibleAssetsGoodwillPolicyTextBlock" xml:lang="en-US" id="label_GoodwillAndIntangibleAssetsGoodwillPolicyTextBlock_2">Goodwill and Intangible Assets, Goodwill [Policy Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GoodwillAndIntangibleAssetsGoodwillPolicyTextBlock" xlink:to="label_GoodwillAndIntangibleAssetsGoodwillPolicyTextBlock_2" xlink:title="label: GoodwillAndIntangibleAssetsGoodwillPolicyTextBlock to label_GoodwillAndIntangibleAssetsGoodwillPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_GoodwillAndIntangibleAssetsGoodwillPolicyTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_GoodwillAndIntangibleAssetsGoodwillPolicyTextBlock" xml:lang="en-US" id="label_GoodwillAndIntangibleAssetsGoodwillPolicyTextBlock_3">This element describes an entity's accounting policy for goodwill. This accounting policy also may address how an entity assesses and measures impairment of goodwill, how reporting units are determined, how goodwill is allocated to such units, and how the fair values of the reporting units are determined.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GoodwillAndIntangibleAssetsGoodwillPolicyTextBlock" xlink:to="label_GoodwillAndIntangibleAssetsGoodwillPolicyTextBlock_3" xlink:title="label: GoodwillAndIntangibleAssetsGoodwillPolicyTextBlock to label_GoodwillAndIntangibleAssetsGoodwillPolicyTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_GoodwillAndIntangibleAssetsIntangibleAssetsPolicyTextBlock" xlink:label="GoodwillAndIntangibleAssetsIntangibleAssetsPolicyTextBlock" xlink:title="GoodwillAndIntangibleAssetsIntangibleAssetsPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_GoodwillAndIntangibleAssetsIntangibleAssetsPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_GoodwillAndIntangibleAssetsIntangibleAssetsPolicyTextBlock" xml:lang="en-US" id="label_GoodwillAndIntangibleAssetsIntangibleAssetsPolicyTextBlock">In-process Research and Development Assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GoodwillAndIntangibleAssetsIntangibleAssetsPolicyTextBlock" xlink:to="label_GoodwillAndIntangibleAssetsIntangibleAssetsPolicyTextBlock" xlink:title="label: GoodwillAndIntangibleAssetsIntangibleAssetsPolicyTextBlock to label_GoodwillAndIntangibleAssetsIntangibleAssetsPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_GoodwillAndIntangibleAssetsIntangibleAssetsPolicyTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_GoodwillAndIntangibleAssetsIntangibleAssetsPolicyTextBlock" xml:lang="en-US" id="label_GoodwillAndIntangibleAssetsIntangibleAssetsPolicyTextBlock_2">Goodwill and Intangible Assets, Intangible Assets [Policy Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GoodwillAndIntangibleAssetsIntangibleAssetsPolicyTextBlock" xlink:to="label_GoodwillAndIntangibleAssetsIntangibleAssetsPolicyTextBlock_2" xlink:title="label: GoodwillAndIntangibleAssetsIntangibleAssetsPolicyTextBlock to label_GoodwillAndIntangibleAssetsIntangibleAssetsPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_GoodwillAndIntangibleAssetsIntangibleAssetsPolicyTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_GoodwillAndIntangibleAssetsIntangibleAssetsPolicyTextBlock" xml:lang="en-US" id="label_GoodwillAndIntangibleAssetsIntangibleAssetsPolicyTextBlock_3">Describes an entity's accounting policy for indefinite-lived intangible assets (that is, those intangible assets not subject to amortization). This accounting policy also may address how the entity assesses whether events and circumstances continue to support an indefinite useful life and how the entity assesses and measures impairment of such assets.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GoodwillAndIntangibleAssetsIntangibleAssetsPolicyTextBlock" xlink:to="label_GoodwillAndIntangibleAssetsIntangibleAssetsPolicyTextBlock_3" xlink:title="label: GoodwillAndIntangibleAssetsIntangibleAssetsPolicyTextBlock to label_GoodwillAndIntangibleAssetsIntangibleAssetsPolicyTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfUnrecognizedShareBasedCompensationExpenseTextBlock" xlink:label="ScheduleOfUnrecognizedShareBasedCompensationExpenseTextBlock" xlink:title="ScheduleOfUnrecognizedShareBasedCompensationExpenseTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfUnrecognizedShareBasedCompensationExpenseTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfUnrecognizedShareBasedCompensationExpenseTextBlock" xml:lang="en-US" id="label_ScheduleOfUnrecognizedShareBasedCompensationExpenseTextBlock">Unrecognized stock-based compensation expense, net of forfeitures</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfUnrecognizedShareBasedCompensationExpenseTextBlock" xlink:to="label_ScheduleOfUnrecognizedShareBasedCompensationExpenseTextBlock" xlink:title="label: ScheduleOfUnrecognizedShareBasedCompensationExpenseTextBlock to label_ScheduleOfUnrecognizedShareBasedCompensationExpenseTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfUnrecognizedShareBasedCompensationExpenseTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfUnrecognizedShareBasedCompensationExpenseTextBlock" xml:lang="en-US" id="label_ScheduleOfUnrecognizedShareBasedCompensationExpenseTextBlock_2">Disclosure as of the latest balance-sheet date presented of the total compensation cost related to outstanding, nonvested share-based compensation awards not yet recognized, net of estimated forfeitures, and the weighted average period over which those unrecognized costs are expected to be reported.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfUnrecognizedShareBasedCompensationExpenseTextBlock" xlink:to="label_ScheduleOfUnrecognizedShareBasedCompensationExpenseTextBlock_2" xlink:title="label: ScheduleOfUnrecognizedShareBasedCompensationExpenseTextBlock to label_ScheduleOfUnrecognizedShareBasedCompensationExpenseTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfUnrecognizedShareBasedCompensationExpenseTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfUnrecognizedShareBasedCompensationExpenseTextBlock" xml:lang="en-US" id="label_ScheduleOfUnrecognizedShareBasedCompensationExpenseTextBlock_3">Schedule of Unrecognized Share-based Compensation Expense [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfUnrecognizedShareBasedCompensationExpenseTextBlock" xlink:to="label_ScheduleOfUnrecognizedShareBasedCompensationExpenseTextBlock_3" xlink:title="label: ScheduleOfUnrecognizedShareBasedCompensationExpenseTextBlock to label_ScheduleOfUnrecognizedShareBasedCompensationExpenseTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfAvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTextBlock" xlink:label="ScheduleOfAvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTextBlock" xlink:title="ScheduleOfAvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfAvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfAvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTextBlock" xml:lang="en-US" id="label_ScheduleOfAvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTextBlock">Fair value and gross unrealized losses related to marketable securities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfAvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTextBlock" xlink:to="label_ScheduleOfAvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTextBlock" xlink:title="label: ScheduleOfAvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTextBlock to label_ScheduleOfAvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfAvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfAvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTextBlock" xml:lang="en-US" id="label_ScheduleOfAvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTextBlock_2">This item represents the fair value of securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position, including the duration.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfAvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTextBlock" xlink:to="label_ScheduleOfAvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTextBlock_2" xlink:title="label: ScheduleOfAvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTextBlock to label_ScheduleOfAvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTextBlock"/>
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    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfCostsAndLiabilitiesRelatedToCertainFinancialTransactionsTableTextBlock" xlink:label="ScheduleOfCostsAndLiabilitiesRelatedToCertainFinancialTransactionsTableTextBlock" xlink:title="ScheduleOfCostsAndLiabilitiesRelatedToCertainFinancialTransactionsTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfCostsAndLiabilitiesRelatedToCertainFinancialTransactionsTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfCostsAndLiabilitiesRelatedToCertainFinancialTransactionsTableTextBlock" xml:lang="en-US" id="label_ScheduleOfCostsAndLiabilitiesRelatedToCertainFinancialTransactionsTableTextBlock">Expenses and Liabilities Related to September 2009 Financial Transactions</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfCostsAndLiabilitiesRelatedToCertainFinancialTransactionsTableTextBlock" xlink:to="label_ScheduleOfCostsAndLiabilitiesRelatedToCertainFinancialTransactionsTableTextBlock" xlink:title="label: ScheduleOfCostsAndLiabilitiesRelatedToCertainFinancialTransactionsTableTextBlock to label_ScheduleOfCostsAndLiabilitiesRelatedToCertainFinancialTransactionsTableTextBlock"/>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfCostsAndLiabilitiesRelatedToCertainFinancialTransactionsTableTextBlock" xlink:to="label_ScheduleOfCostsAndLiabilitiesRelatedToCertainFinancialTransactionsTableTextBlock_2" xlink:title="label: ScheduleOfCostsAndLiabilitiesRelatedToCertainFinancialTransactionsTableTextBlock to label_ScheduleOfCostsAndLiabilitiesRelatedToCertainFinancialTransactionsTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfCostsAndLiabilitiesRelatedToCertainFinancialTransactionsTableTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfCostsAndLiabilitiesRelatedToCertainFinancialTransactionsTableTextBlock" xml:lang="en-US" id="label_ScheduleOfCostsAndLiabilitiesRelatedToCertainFinancialTransactionsTableTextBlock_3">Schedule of Costs and Liabilities Related to Certain Financial Transactions [Table Text Block]</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAbstract" xlink:label="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAbstract" xlink:title="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAbstract"/>
    <label xlink:type="resource" xlink:label="label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAbstract" xml:lang="en-US" id="label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAbstract">Antidilutive Securities Excluded from Computation of Earnings Per Share</label>
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    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_AccountingPoliciesDisclosureLineItems" xlink:label="AccountingPoliciesDisclosureLineItems" xlink:title="AccountingPoliciesDisclosureLineItems"/>
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    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardModificationAndAccelerationIncrementalCompensationCost_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardModificationAndAccelerationIncrementalCompensationCost" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardModificationAndAccelerationIncrementalCompensationCost_2">Share-based Compensation Arrangement by Share-based Payment Award, Modification and Acceleration Incremental Compensation Cost</label>
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    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardModificationAndAccelerationIncrementalCompensationCost_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardModificationAndAccelerationIncrementalCompensationCost" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardModificationAndAccelerationIncrementalCompensationCost_3">The expense recognized in connection with executive officer arrangement(s) for 1) the excess of the fair value of modified option awards over the fair value of the option awards immediately before modification and 2) the expense recognized for the accelerated vesting of stock option awards.</label>
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    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAccelerationIncrementalCompensationCost_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAccelerationIncrementalCompensationCost" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAccelerationIncrementalCompensationCost_2">Share-based Compensation Arrangement by Share-based Payment Award, Acceleration Incremental Compensation Cost</label>
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    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAccelerationIncrementalCompensationCost_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAccelerationIncrementalCompensationCost" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAccelerationIncrementalCompensationCost_3">The expense recognized for the accelerated vesting of stock award(s) in connection with executive officer arrangement(s).</label>
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    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShareBasedCompensationArrangementAbstract" xml:lang="en-US" id="label_ShareBasedCompensationArrangementAbstract">Stock-based compensation expense for individual arrangement:</label>
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    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementAbstract" xml:lang="en-US" id="label_ShareBasedCompensationArrangementAbstract_2">Share-based Compensation Arrangement [Abstract]</label>
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    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CashCashEquivalentsAvailableForSaleSecuritiesAmortizedCost" xlink:label="CashCashEquivalentsAvailableForSaleSecuritiesAmortizedCost" xlink:title="CashCashEquivalentsAvailableForSaleSecuritiesAmortizedCost"/>
    <label xlink:type="resource" xlink:label="label_CashCashEquivalentsAvailableForSaleSecuritiesAmortizedCost" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CashCashEquivalentsAvailableForSaleSecuritiesAmortizedCost" xml:lang="en-US" id="label_CashCashEquivalentsAvailableForSaleSecuritiesAmortizedCost">Amortized Cost</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashCashEquivalentsAvailableForSaleSecuritiesAmortizedCost" xlink:to="label_CashCashEquivalentsAvailableForSaleSecuritiesAmortizedCost" xlink:title="label: CashCashEquivalentsAvailableForSaleSecuritiesAmortizedCost to label_CashCashEquivalentsAvailableForSaleSecuritiesAmortizedCost"/>
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    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CashCashEquivalentsAvailableForSaleSecuritiesUnrealizedLossGross" xlink:label="CashCashEquivalentsAvailableForSaleSecuritiesUnrealizedLossGross" xlink:title="CashCashEquivalentsAvailableForSaleSecuritiesUnrealizedLossGross"/>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAbstract" xlink:label="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAbstract" xlink:title="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAbstract"/>
    <label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAbstract" xml:lang="en-US" id="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAbstract">Fair value and gross unrealized losses related to marketable securities in a continuous gross unrealized loss position</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AvailableForSaleSecuritiesCurrentAbstract" xlink:label="AvailableForSaleSecuritiesCurrentAbstract" xlink:title="AvailableForSaleSecuritiesCurrentAbstract"/>
    <label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesCurrentAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AvailableForSaleSecuritiesCurrentAbstract" xml:lang="en-US" id="label_AvailableForSaleSecuritiesCurrentAbstract">Marketable securities:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecuritiesCurrentAbstract" xlink:to="label_AvailableForSaleSecuritiesCurrentAbstract" xlink:title="label: AvailableForSaleSecuritiesCurrentAbstract to label_AvailableForSaleSecuritiesCurrentAbstract"/>
    <label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesCurrentAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AvailableForSaleSecuritiesCurrentAbstract" xml:lang="en-US" id="label_AvailableForSaleSecuritiesCurrentAbstract_2">Available-for-sale Securities, Current [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecuritiesCurrentAbstract" xlink:to="label_AvailableForSaleSecuritiesCurrentAbstract_2" xlink:title="label: AvailableForSaleSecuritiesCurrentAbstract to label_AvailableForSaleSecuritiesCurrentAbstract"/>
    <label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesCurrentAbstract_3" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_AvailableForSaleSecuritiesCurrentAbstract" xml:lang="en-US" id="label_AvailableForSaleSecuritiesCurrentAbstract_3">Marketable securities, available for sale, current portion</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecuritiesCurrentAbstract" xlink:to="label_AvailableForSaleSecuritiesCurrentAbstract_3" xlink:title="label: AvailableForSaleSecuritiesCurrentAbstract to label_AvailableForSaleSecuritiesCurrentAbstract"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionQualitativeDisclosureAbstract" xlink:label="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionQualitativeDisclosureAbstract" xlink:title="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionQualitativeDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionQualitativeDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionQualitativeDisclosureAbstract" xml:lang="en-US" id="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionQualitativeDisclosureAbstract">Marketable securities in a continuous gross unrealized loss position disclosure:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionQualitativeDisclosureAbstract" xlink:to="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionQualitativeDisclosureAbstract" xlink:title="label: AvailableForSaleSecuritiesContinuousUnrealizedLossPositionQualitativeDisclosureAbstract to label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionQualitativeDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionQualitativeDisclosureAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionQualitativeDisclosureAbstract" xml:lang="en-US" id="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionQualitativeDisclosureAbstract_2">Available-for-sale Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionQualitativeDisclosureAbstract" xlink:to="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionQualitativeDisclosureAbstract_2" xlink:title="label: AvailableForSaleSecuritiesContinuousUnrealizedLossPositionQualitativeDisclosureAbstract to label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionQualitativeDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_RestrictedCashAndInvestmentsNoncurrentAbstract" xlink:label="RestrictedCashAndInvestmentsNoncurrentAbstract" xlink:title="RestrictedCashAndInvestmentsNoncurrentAbstract"/>
    <label xlink:type="resource" xlink:label="label_RestrictedCashAndInvestmentsNoncurrentAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RestrictedCashAndInvestmentsNoncurrentAbstract" xml:lang="en-US" id="label_RestrictedCashAndInvestmentsNoncurrentAbstract">Restricted cash:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestrictedCashAndInvestmentsNoncurrentAbstract" xlink:to="label_RestrictedCashAndInvestmentsNoncurrentAbstract" xlink:title="label: RestrictedCashAndInvestmentsNoncurrentAbstract to label_RestrictedCashAndInvestmentsNoncurrentAbstract"/>
    <label xlink:type="resource" xlink:label="label_RestrictedCashAndInvestmentsNoncurrentAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RestrictedCashAndInvestmentsNoncurrentAbstract" xml:lang="en-US" id="label_RestrictedCashAndInvestmentsNoncurrentAbstract_2">Restricted Cash and Investments, Noncurrent [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestrictedCashAndInvestmentsNoncurrentAbstract" xlink:to="label_RestrictedCashAndInvestmentsNoncurrentAbstract_2" xlink:title="label: RestrictedCashAndInvestmentsNoncurrentAbstract to label_RestrictedCashAndInvestmentsNoncurrentAbstract"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ConvertibleSubordinatedDebtCurrentAndNoncurrentAbstract" xlink:label="ConvertibleSubordinatedDebtCurrentAndNoncurrentAbstract" xlink:title="ConvertibleSubordinatedDebtCurrentAndNoncurrentAbstract"/>
    <label xlink:type="resource" xlink:label="label_ConvertibleSubordinatedDebtCurrentAndNoncurrentAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ConvertibleSubordinatedDebtCurrentAndNoncurrentAbstract" xml:lang="en-US" id="label_ConvertibleSubordinatedDebtCurrentAndNoncurrentAbstract">4.75% Convertible senior subordinated notes due 2013</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleSubordinatedDebtCurrentAndNoncurrentAbstract" xlink:to="label_ConvertibleSubordinatedDebtCurrentAndNoncurrentAbstract" xlink:title="label: ConvertibleSubordinatedDebtCurrentAndNoncurrentAbstract to label_ConvertibleSubordinatedDebtCurrentAndNoncurrentAbstract"/>
    <label xlink:type="resource" xlink:label="label_ConvertibleSubordinatedDebtCurrentAndNoncurrentAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ConvertibleSubordinatedDebtCurrentAndNoncurrentAbstract" xml:lang="en-US" id="label_ConvertibleSubordinatedDebtCurrentAndNoncurrentAbstract_2">Convertible Subordinated Debt [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleSubordinatedDebtCurrentAndNoncurrentAbstract" xlink:to="label_ConvertibleSubordinatedDebtCurrentAndNoncurrentAbstract_2" xlink:title="label: ConvertibleSubordinatedDebtCurrentAndNoncurrentAbstract to label_ConvertibleSubordinatedDebtCurrentAndNoncurrentAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_StockIssuedDuringPeriodForConversionOrExchangeOfConvertibleSubordinatedNotes" xlink:label="StockIssuedDuringPeriodForConversionOrExchangeOfConvertibleSubordinatedNotes" xlink:title="StockIssuedDuringPeriodForConversionOrExchangeOfConvertibleSubordinatedNotes"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodForConversionOrExchangeOfConvertibleSubordinatedNotes" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StockIssuedDuringPeriodForConversionOrExchangeOfConvertibleSubordinatedNotes" xml:lang="en-US" id="label_StockIssuedDuringPeriodForConversionOrExchangeOfConvertibleSubordinatedNotes">Convertible subordinated notes exchanged or converted</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodForConversionOrExchangeOfConvertibleSubordinatedNotes" xlink:to="label_StockIssuedDuringPeriodForConversionOrExchangeOfConvertibleSubordinatedNotes" xlink:title="label: StockIssuedDuringPeriodForConversionOrExchangeOfConvertibleSubordinatedNotes to label_StockIssuedDuringPeriodForConversionOrExchangeOfConvertibleSubordinatedNotes"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodForConversionOrExchangeOfConvertibleSubordinatedNotes_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockIssuedDuringPeriodForConversionOrExchangeOfConvertibleSubordinatedNotes" xml:lang="en-US" id="label_StockIssuedDuringPeriodForConversionOrExchangeOfConvertibleSubordinatedNotes_2">Stock Issued During Period for Conversion or Exchange of Convertible Subordinated Notes</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodForConversionOrExchangeOfConvertibleSubordinatedNotes" xlink:to="label_StockIssuedDuringPeriodForConversionOrExchangeOfConvertibleSubordinatedNotes_2" xlink:title="label: StockIssuedDuringPeriodForConversionOrExchangeOfConvertibleSubordinatedNotes to label_StockIssuedDuringPeriodForConversionOrExchangeOfConvertibleSubordinatedNotes"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodForConversionOrExchangeOfConvertibleSubordinatedNotes_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_StockIssuedDuringPeriodForConversionOrExchangeOfConvertibleSubordinatedNotes" xml:lang="en-US" id="label_StockIssuedDuringPeriodForConversionOrExchangeOfConvertibleSubordinatedNotes_3">Principal value of convertible subordinated notes exchanged or converted during the period for stock.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodForConversionOrExchangeOfConvertibleSubordinatedNotes" xlink:to="label_StockIssuedDuringPeriodForConversionOrExchangeOfConvertibleSubordinatedNotes_3" xlink:title="label: StockIssuedDuringPeriodForConversionOrExchangeOfConvertibleSubordinatedNotes to label_StockIssuedDuringPeriodForConversionOrExchangeOfConvertibleSubordinatedNotes"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_StockIssuedDuringPeriodSharesConversionOrExchangeOfConvertibleSubordinatedNotes" xlink:label="StockIssuedDuringPeriodSharesConversionOrExchangeOfConvertibleSubordinatedNotes" xlink:title="StockIssuedDuringPeriodSharesConversionOrExchangeOfConvertibleSubordinatedNotes"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodSharesConversionOrExchangeOfConvertibleSubordinatedNotes" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StockIssuedDuringPeriodSharesConversionOrExchangeOfConvertibleSubordinatedNotes" xml:lang="en-US" id="label_StockIssuedDuringPeriodSharesConversionOrExchangeOfConvertibleSubordinatedNotes">Convertible subordinated notes exchanged or converted (in shares)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodSharesConversionOrExchangeOfConvertibleSubordinatedNotes" xlink:to="label_StockIssuedDuringPeriodSharesConversionOrExchangeOfConvertibleSubordinatedNotes" xlink:title="label: StockIssuedDuringPeriodSharesConversionOrExchangeOfConvertibleSubordinatedNotes to label_StockIssuedDuringPeriodSharesConversionOrExchangeOfConvertibleSubordinatedNotes"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodSharesConversionOrExchangeOfConvertibleSubordinatedNotes_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockIssuedDuringPeriodSharesConversionOrExchangeOfConvertibleSubordinatedNotes" xml:lang="en-US" id="label_StockIssuedDuringPeriodSharesConversionOrExchangeOfConvertibleSubordinatedNotes_2">Stock Issued During Period, Shares, Conversion or Exchange of Convertible Subordinated Notes</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodSharesConversionOrExchangeOfConvertibleSubordinatedNotes" xlink:to="label_StockIssuedDuringPeriodSharesConversionOrExchangeOfConvertibleSubordinatedNotes_2" xlink:title="label: StockIssuedDuringPeriodSharesConversionOrExchangeOfConvertibleSubordinatedNotes to label_StockIssuedDuringPeriodSharesConversionOrExchangeOfConvertibleSubordinatedNotes"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodSharesConversionOrExchangeOfConvertibleSubordinatedNotes_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_StockIssuedDuringPeriodSharesConversionOrExchangeOfConvertibleSubordinatedNotes" xml:lang="en-US" id="label_StockIssuedDuringPeriodSharesConversionOrExchangeOfConvertibleSubordinatedNotes_3">The number of shares of stock issued during the period in an exchange or conversion of convertible subordinated notes.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodSharesConversionOrExchangeOfConvertibleSubordinatedNotes" xlink:to="label_StockIssuedDuringPeriodSharesConversionOrExchangeOfConvertibleSubordinatedNotes_3" xlink:title="label: StockIssuedDuringPeriodSharesConversionOrExchangeOfConvertibleSubordinatedNotes to label_StockIssuedDuringPeriodSharesConversionOrExchangeOfConvertibleSubordinatedNotes"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_DebtInstrumentsConvertibleConversionPrice" xlink:label="DebtInstrumentsConvertibleConversionPrice" xlink:title="DebtInstrumentsConvertibleConversionPrice"/>
    <label xlink:type="resource" xlink:label="label_DebtInstrumentsConvertibleConversionPrice" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentsConvertibleConversionPrice" xml:lang="en-US" id="label_DebtInstrumentsConvertibleConversionPrice">Conversion price (in dollars per share)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentsConvertibleConversionPrice" xlink:to="label_DebtInstrumentsConvertibleConversionPrice" xlink:title="label: DebtInstrumentsConvertibleConversionPrice to label_DebtInstrumentsConvertibleConversionPrice"/>
    <label xlink:type="resource" xlink:label="label_DebtInstrumentsConvertibleConversionPrice_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentsConvertibleConversionPrice" xml:lang="en-US" id="label_DebtInstrumentsConvertibleConversionPrice_2">Debt Instruments, Convertible, Conversion Price</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentsConvertibleConversionPrice" xlink:to="label_DebtInstrumentsConvertibleConversionPrice_2" xlink:title="label: DebtInstrumentsConvertibleConversionPrice to label_DebtInstrumentsConvertibleConversionPrice"/>
    <label xlink:type="resource" xlink:label="label_DebtInstrumentsConvertibleConversionPrice_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DebtInstrumentsConvertibleConversionPrice" xml:lang="en-US" id="label_DebtInstrumentsConvertibleConversionPrice_3">The price per share of the conversion feature embedded in a debt instrument.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentsConvertibleConversionPrice" xlink:to="label_DebtInstrumentsConvertibleConversionPrice_3" xlink:title="label: DebtInstrumentsConvertibleConversionPrice to label_DebtInstrumentsConvertibleConversionPrice"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_VX222Member" xlink:label="VX222Member" xlink:title="VX222Member"/>
    <label xlink:type="resource" xlink:label="label_VX222Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_VX222Member" xml:lang="en-US" id="label_VX222Member">VX-222</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VX222Member" xlink:to="label_VX222Member" xlink:title="label: VX222Member to label_VX222Member"/>
    <label xlink:type="resource" xlink:label="label_VX222Member_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_VX222Member" xml:lang="en-US" id="label_VX222Member_2">VX-222, a clinical-development stage HCV polymerase inhibitor acquired.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VX222Member" xlink:to="label_VX222Member_2" xlink:title="label: VX222Member to label_VX222Member"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_VX759Member" xlink:label="VX759Member" xlink:title="VX759Member"/>
    <label xlink:type="resource" xlink:label="label_VX759Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_VX759Member" xml:lang="en-US" id="label_VX759Member">VX-759</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VX759Member" xlink:to="label_VX759Member" xlink:title="label: VX759Member to label_VX759Member"/>
    <label xlink:type="resource" xlink:label="label_VX759Member_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_VX759Member" xml:lang="en-US" id="label_VX759Member_2">VX-759, a clinical-development stage HCV polymerase inhibitor acquired.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VX759Member" xlink:to="label_VX759Member_2" xlink:title="label: VX759Member to label_VX759Member"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementAggregateValueMilestonesRelatedToFinancialTransactions" xlink:label="CollaborativeArrangementAggregateValueMilestonesRelatedToFinancialTransactions" xlink:title="CollaborativeArrangementAggregateValueMilestonesRelatedToFinancialTransactions"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementAggregateValueMilestonesRelatedToFinancialTransactions" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CollaborativeArrangementAggregateValueMilestonesRelatedToFinancialTransactions" xml:lang="en-US" id="label_CollaborativeArrangementAggregateValueMilestonesRelatedToFinancialTransactions">Value of milestones related to the September 2009 Financial Transactions</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementAggregateValueMilestonesRelatedToFinancialTransactions" xlink:to="label_CollaborativeArrangementAggregateValueMilestonesRelatedToFinancialTransactions" xlink:title="label: CollaborativeArrangementAggregateValueMilestonesRelatedToFinancialTransactions to label_CollaborativeArrangementAggregateValueMilestonesRelatedToFinancialTransactions"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementAggregateValueMilestonesRelatedToFinancialTransactions_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaborativeArrangementAggregateValueMilestonesRelatedToFinancialTransactions" xml:lang="en-US" id="label_CollaborativeArrangementAggregateValueMilestonesRelatedToFinancialTransactions_2">The value of the milestones for regulatory filing and approval, and product launch, pursuant to the Janssen collaboration agreement, that related to the September 2009 financial transactions.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementAggregateValueMilestonesRelatedToFinancialTransactions" xlink:to="label_CollaborativeArrangementAggregateValueMilestonesRelatedToFinancialTransactions_2" xlink:title="label: CollaborativeArrangementAggregateValueMilestonesRelatedToFinancialTransactions to label_CollaborativeArrangementAggregateValueMilestonesRelatedToFinancialTransactions"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementAggregateValueMilestonesRelatedToFinancialTransactions_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementAggregateValueMilestonesRelatedToFinancialTransactions" xml:lang="en-US" id="label_CollaborativeArrangementAggregateValueMilestonesRelatedToFinancialTransactions_3">Collaborative Arrangement, Aggregate Value Milestones Related to Financial Transactions</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementAggregateValueMilestonesRelatedToFinancialTransactions" xlink:to="label_CollaborativeArrangementAggregateValueMilestonesRelatedToFinancialTransactions_3" xlink:title="label: CollaborativeArrangementAggregateValueMilestonesRelatedToFinancialTransactions to label_CollaborativeArrangementAggregateValueMilestonesRelatedToFinancialTransactions"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementPortionOfNotesRedeemedUponLaunchMilestones" xlink:label="CollaborativeArrangementPortionOfNotesRedeemedUponLaunchMilestones" xlink:title="CollaborativeArrangementPortionOfNotesRedeemedUponLaunchMilestones"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementPortionOfNotesRedeemedUponLaunchMilestones" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CollaborativeArrangementPortionOfNotesRedeemedUponLaunchMilestones" xml:lang="en-US" id="label_CollaborativeArrangementPortionOfNotesRedeemedUponLaunchMilestones">Portion of 2012 Notes that will be redeemed upon achievement of certain launch milestones pursuant to the Janssen collaboration</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementPortionOfNotesRedeemedUponLaunchMilestones" xlink:to="label_CollaborativeArrangementPortionOfNotesRedeemedUponLaunchMilestones" xlink:title="label: CollaborativeArrangementPortionOfNotesRedeemedUponLaunchMilestones to label_CollaborativeArrangementPortionOfNotesRedeemedUponLaunchMilestones"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementPortionOfNotesRedeemedUponLaunchMilestones_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaborativeArrangementPortionOfNotesRedeemedUponLaunchMilestones" xml:lang="en-US" id="label_CollaborativeArrangementPortionOfNotesRedeemedUponLaunchMilestones_2">The portion of the 2012 Notes that will be redeemed upon achieving certain launch milestones pursuant to the Janssen collaboration.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementPortionOfNotesRedeemedUponLaunchMilestones" xlink:to="label_CollaborativeArrangementPortionOfNotesRedeemedUponLaunchMilestones_2" xlink:title="label: CollaborativeArrangementPortionOfNotesRedeemedUponLaunchMilestones to label_CollaborativeArrangementPortionOfNotesRedeemedUponLaunchMilestones"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementPortionOfNotesRedeemedUponLaunchMilestones_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementPortionOfNotesRedeemedUponLaunchMilestones" xml:lang="en-US" id="label_CollaborativeArrangementPortionOfNotesRedeemedUponLaunchMilestones_3">Collaborative Arrangement, Portion of Notes Redeemed Upon Launch Milestones</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementPortionOfNotesRedeemedUponLaunchMilestones" xlink:to="label_CollaborativeArrangementPortionOfNotesRedeemedUponLaunchMilestones_3" xlink:title="label: CollaborativeArrangementPortionOfNotesRedeemedUponLaunchMilestones to label_CollaborativeArrangementPortionOfNotesRedeemedUponLaunchMilestones"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementNumberOfPurchaseAgreementsRelatedToSaleOfFutureMilestonePayments" xlink:label="CollaborativeArrangementNumberOfPurchaseAgreementsRelatedToSaleOfFutureMilestonePayments" xlink:title="CollaborativeArrangementNumberOfPurchaseAgreementsRelatedToSaleOfFutureMilestonePayments"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementNumberOfPurchaseAgreementsRelatedToSaleOfFutureMilestonePayments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CollaborativeArrangementNumberOfPurchaseAgreementsRelatedToSaleOfFutureMilestonePayments" xml:lang="en-US" id="label_CollaborativeArrangementNumberOfPurchaseAgreementsRelatedToSaleOfFutureMilestonePayments">Number of purchase agreements entered into related to sale of potential future launch milestone payments pursuant to the Janssen collaboration</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementNumberOfPurchaseAgreementsRelatedToSaleOfFutureMilestonePayments" xlink:to="label_CollaborativeArrangementNumberOfPurchaseAgreementsRelatedToSaleOfFutureMilestonePayments" xlink:title="label: CollaborativeArrangementNumberOfPurchaseAgreementsRelatedToSaleOfFutureMilestonePayments to label_CollaborativeArrangementNumberOfPurchaseAgreementsRelatedToSaleOfFutureMilestonePayments"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementNumberOfPurchaseAgreementsRelatedToSaleOfFutureMilestonePayments_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaborativeArrangementNumberOfPurchaseAgreementsRelatedToSaleOfFutureMilestonePayments" xml:lang="en-US" id="label_CollaborativeArrangementNumberOfPurchaseAgreementsRelatedToSaleOfFutureMilestonePayments_2">The number of purchase agreements entered into related to the sale of potential future launch milestone payments pursuant to the Janssen collaboration</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementNumberOfPurchaseAgreementsRelatedToSaleOfFutureMilestonePayments" xlink:to="label_CollaborativeArrangementNumberOfPurchaseAgreementsRelatedToSaleOfFutureMilestonePayments_2" xlink:title="label: CollaborativeArrangementNumberOfPurchaseAgreementsRelatedToSaleOfFutureMilestonePayments to label_CollaborativeArrangementNumberOfPurchaseAgreementsRelatedToSaleOfFutureMilestonePayments"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementNumberOfPurchaseAgreementsRelatedToSaleOfFutureMilestonePayments_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementNumberOfPurchaseAgreementsRelatedToSaleOfFutureMilestonePayments" xml:lang="en-US" id="label_CollaborativeArrangementNumberOfPurchaseAgreementsRelatedToSaleOfFutureMilestonePayments_3">Collaborative Arrangement, Number of Purchase Agreements Related to Sale of Future Milestone Payments</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementNumberOfPurchaseAgreementsRelatedToSaleOfFutureMilestonePayments" xlink:to="label_CollaborativeArrangementNumberOfPurchaseAgreementsRelatedToSaleOfFutureMilestonePayments_3" xlink:title="label: CollaborativeArrangementNumberOfPurchaseAgreementsRelatedToSaleOfFutureMilestonePayments to label_CollaborativeArrangementNumberOfPurchaseAgreementsRelatedToSaleOfFutureMilestonePayments"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementValueOfSecurityInterestInMilestones" xlink:label="CollaborativeArrangementValueOfSecurityInterestInMilestones" xlink:title="CollaborativeArrangementValueOfSecurityInterestInMilestones"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementValueOfSecurityInterestInMilestones" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CollaborativeArrangementValueOfSecurityInterestInMilestones" xml:lang="en-US" id="label_CollaborativeArrangementValueOfSecurityInterestInMilestones">Security interest in future milestone payments pursuant to the Janssen collaboration</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementValueOfSecurityInterestInMilestones" xlink:to="label_CollaborativeArrangementValueOfSecurityInterestInMilestones" xlink:title="label: CollaborativeArrangementValueOfSecurityInterestInMilestones to label_CollaborativeArrangementValueOfSecurityInterestInMilestones"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementValueOfSecurityInterestInMilestones_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaborativeArrangementValueOfSecurityInterestInMilestones" xml:lang="en-US" id="label_CollaborativeArrangementValueOfSecurityInterestInMilestones_2">The value of contingent consideration to be received for the milestones of regulatory filing and approval, and product launch in the European Union, pursuant to the Janssen collaboration agreement, that has been pledged as collateral to the Purchaser of the note series.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementValueOfSecurityInterestInMilestones" xlink:to="label_CollaborativeArrangementValueOfSecurityInterestInMilestones_2" xlink:title="label: CollaborativeArrangementValueOfSecurityInterestInMilestones to label_CollaborativeArrangementValueOfSecurityInterestInMilestones"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementValueOfSecurityInterestInMilestones_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementValueOfSecurityInterestInMilestones" xml:lang="en-US" id="label_CollaborativeArrangementValueOfSecurityInterestInMilestones_3">Collaborative Arrangement, Value of Security Interest in Milestones</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementValueOfSecurityInterestInMilestones" xlink:to="label_CollaborativeArrangementValueOfSecurityInterestInMilestones_3" xlink:title="label: CollaborativeArrangementValueOfSecurityInterestInMilestones to label_CollaborativeArrangementValueOfSecurityInterestInMilestones"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent" xlink:label="SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent" xlink:title="SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent"/>
    <label xlink:type="resource" xlink:label="label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent" xml:lang="en-US" id="label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent">Secured Long-term Debt and Embedded Derivative Fair Value of Embedded Derivative Liability, Current</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent" xlink:to="label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent" xlink:title="label: SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent to label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent"/>
    <label xlink:type="resource" xlink:label="label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent" xml:lang="en-US" id="label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent_2">Secured notes (due 2012)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent" xlink:to="label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent_2" xlink:title="label: SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent to label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent"/>
    <label xlink:type="resource" xlink:label="label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent" xml:lang="en-US" id="label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent_3">Carrying value as of the balance sheet date of collateralized debt obligations with maturities due within one year, and the fair value as of the balance sheet date of the embedded derivative classified as a current liability.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent" xlink:to="label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent_3" xlink:title="label: SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent to label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityCurrent"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_RecognizedCollaborativeRevenueAbstract" xlink:label="RecognizedCollaborativeRevenueAbstract" xlink:title="RecognizedCollaborativeRevenueAbstract"/>
    <label xlink:type="resource" xlink:label="label_RecognizedCollaborativeRevenueAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RecognizedCollaborativeRevenueAbstract" xml:lang="en-US" id="label_RecognizedCollaborativeRevenueAbstract">Collaborative revenues recognized</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RecognizedCollaborativeRevenueAbstract" xlink:to="label_RecognizedCollaborativeRevenueAbstract" xlink:title="label: RecognizedCollaborativeRevenueAbstract to label_RecognizedCollaborativeRevenueAbstract"/>
    <label xlink:type="resource" xlink:label="label_RecognizedCollaborativeRevenueAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RecognizedCollaborativeRevenueAbstract" xml:lang="en-US" id="label_RecognizedCollaborativeRevenueAbstract_2">Recognized Collaborative Revenue [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RecognizedCollaborativeRevenueAbstract" xlink:to="label_RecognizedCollaborativeRevenueAbstract_2" xlink:title="label: RecognizedCollaborativeRevenueAbstract to label_RecognizedCollaborativeRevenueAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementRevenuesNetReimbursementDevelopmentProgramExpense" xlink:label="CollaborativeArrangementRevenuesNetReimbursementDevelopmentProgramExpense" xlink:title="CollaborativeArrangementRevenuesNetReimbursementDevelopmentProgramExpense"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementRevenuesNetReimbursementDevelopmentProgramExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementRevenuesNetReimbursementDevelopmentProgramExpense" xml:lang="en-US" id="label_CollaborativeArrangementRevenuesNetReimbursementDevelopmentProgramExpense">Collaborative Arrangement Revenues Net Reimbursement Development Program Expense</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementRevenuesNetReimbursementDevelopmentProgramExpense" xlink:to="label_CollaborativeArrangementRevenuesNetReimbursementDevelopmentProgramExpense" xlink:title="label: CollaborativeArrangementRevenuesNetReimbursementDevelopmentProgramExpense to label_CollaborativeArrangementRevenuesNetReimbursementDevelopmentProgramExpense"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementRevenuesNetReimbursementDevelopmentProgramExpense_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CollaborativeArrangementRevenuesNetReimbursementDevelopmentProgramExpense" xml:lang="en-US" id="label_CollaborativeArrangementRevenuesNetReimbursementDevelopmentProgramExpense_2">Net reimbursement (payment) for telaprevir development costs</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementRevenuesNetReimbursementDevelopmentProgramExpense" xlink:to="label_CollaborativeArrangementRevenuesNetReimbursementDevelopmentProgramExpense_2" xlink:title="label: CollaborativeArrangementRevenuesNetReimbursementDevelopmentProgramExpense to label_CollaborativeArrangementRevenuesNetReimbursementDevelopmentProgramExpense"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementRevenuesNetReimbursementDevelopmentProgramExpense_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaborativeArrangementRevenuesNetReimbursementDevelopmentProgramExpense" xml:lang="en-US" id="label_CollaborativeArrangementRevenuesNetReimbursementDevelopmentProgramExpense_3">This element represents the net amount of reimbursable costs incurred by the entity that the collaborator is obligated to pay the entity, after offsetting any reimbursable expenses incurred by the collaborator, which are recognized as collaborative revenues.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementRevenuesNetReimbursementDevelopmentProgramExpense" xlink:to="label_CollaborativeArrangementRevenuesNetReimbursementDevelopmentProgramExpense_3" xlink:title="label: CollaborativeArrangementRevenuesNetReimbursementDevelopmentProgramExpense to label_CollaborativeArrangementRevenuesNetReimbursementDevelopmentProgramExpense"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementRevenuesThroughThirdPartyManufacturingNetwork" xlink:label="CollaborativeArrangementRevenuesThroughThirdPartyManufacturingNetwork" xlink:title="CollaborativeArrangementRevenuesThroughThirdPartyManufacturingNetwork"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementRevenuesThroughThirdPartyManufacturingNetwork_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementRevenuesThroughThirdPartyManufacturingNetwork" xml:lang="en-US" id="label_CollaborativeArrangementRevenuesThroughThirdPartyManufacturingNetwork_2">Collaborative Arrangement Revenues Through Third Party Manufacturing Network</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementRevenuesThroughThirdPartyManufacturingNetwork" xlink:to="label_CollaborativeArrangementRevenuesThroughThirdPartyManufacturingNetwork_2" xlink:title="label: CollaborativeArrangementRevenuesThroughThirdPartyManufacturingNetwork to label_CollaborativeArrangementRevenuesThroughThirdPartyManufacturingNetwork"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementRevenuesThroughThirdPartyManufacturingNetwork_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CollaborativeArrangementRevenuesThroughThirdPartyManufacturingNetwork" xml:lang="en-US" id="label_CollaborativeArrangementRevenuesThroughThirdPartyManufacturingNetwork_3">Reimbursement for manufacturing services</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementRevenuesThroughThirdPartyManufacturingNetwork" xlink:to="label_CollaborativeArrangementRevenuesThroughThirdPartyManufacturingNetwork_3" xlink:title="label: CollaborativeArrangementRevenuesThroughThirdPartyManufacturingNetwork to label_CollaborativeArrangementRevenuesThroughThirdPartyManufacturingNetwork"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementRevenuesThroughThirdPartyManufacturingNetwork" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaborativeArrangementRevenuesThroughThirdPartyManufacturingNetwork" xml:lang="en-US" id="label_CollaborativeArrangementRevenuesThroughThirdPartyManufacturingNetwork">This element represents revenues from collaborator for manufacturing services provided through the entity's third-party manufacturing network.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementRevenuesThroughThirdPartyManufacturingNetwork" xlink:to="label_CollaborativeArrangementRevenuesThroughThirdPartyManufacturingNetwork" xlink:title="label: CollaborativeArrangementRevenuesThroughThirdPartyManufacturingNetwork to label_CollaborativeArrangementRevenuesThroughThirdPartyManufacturingNetwork"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfRecognizedCollaborativeRevenueTableTextBlock" xlink:label="ScheduleOfRecognizedCollaborativeRevenueTableTextBlock" xlink:title="ScheduleOfRecognizedCollaborativeRevenueTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfRecognizedCollaborativeRevenueTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfRecognizedCollaborativeRevenueTableTextBlock" xml:lang="en-US" id="label_ScheduleOfRecognizedCollaborativeRevenueTableTextBlock">Schedule of Recognized Collaborative Revenue [Table Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfRecognizedCollaborativeRevenueTableTextBlock" xlink:to="label_ScheduleOfRecognizedCollaborativeRevenueTableTextBlock" xlink:title="label: ScheduleOfRecognizedCollaborativeRevenueTableTextBlock to label_ScheduleOfRecognizedCollaborativeRevenueTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfRecognizedCollaborativeRevenueTableTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfRecognizedCollaborativeRevenueTableTextBlock" xml:lang="en-US" id="label_ScheduleOfRecognizedCollaborativeRevenueTableTextBlock_2">Collaborative Arrangements</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfRecognizedCollaborativeRevenueTableTextBlock" xlink:to="label_ScheduleOfRecognizedCollaborativeRevenueTableTextBlock_2" xlink:title="label: ScheduleOfRecognizedCollaborativeRevenueTableTextBlock to label_ScheduleOfRecognizedCollaborativeRevenueTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfRecognizedCollaborativeRevenueTableTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfRecognizedCollaborativeRevenueTableTextBlock" xml:lang="en-US" id="label_ScheduleOfRecognizedCollaborativeRevenueTableTextBlock_3">This element represents the collaborative revenues recognized by the entity during the period.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfRecognizedCollaborativeRevenueTableTextBlock" xlink:to="label_ScheduleOfRecognizedCollaborativeRevenueTableTextBlock_3" xlink:title="label: ScheduleOfRecognizedCollaborativeRevenueTableTextBlock to label_ScheduleOfRecognizedCollaborativeRevenueTableTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_DeferredRevenueRoyaltyPurchaseAgreement" xlink:label="DeferredRevenueRoyaltyPurchaseAgreement" xlink:title="DeferredRevenueRoyaltyPurchaseAgreement"/>
    <label xlink:type="resource" xlink:label="label_DeferredRevenueRoyaltyPurchaseAgreement" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DeferredRevenueRoyaltyPurchaseAgreement" xml:lang="en-US" id="label_DeferredRevenueRoyaltyPurchaseAgreement">Deferred Revenue Royalty Purchase Agreement</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredRevenueRoyaltyPurchaseAgreement" xlink:to="label_DeferredRevenueRoyaltyPurchaseAgreement" xlink:title="label: DeferredRevenueRoyaltyPurchaseAgreement to label_DeferredRevenueRoyaltyPurchaseAgreement"/>
    <label xlink:type="resource" xlink:label="label_DeferredRevenueRoyaltyPurchaseAgreement_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DeferredRevenueRoyaltyPurchaseAgreement" xml:lang="en-US" id="label_DeferredRevenueRoyaltyPurchaseAgreement_2">Deferred revenues related to the one-time cash payment agreement with GlaxoSmithKline</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredRevenueRoyaltyPurchaseAgreement" xlink:to="label_DeferredRevenueRoyaltyPurchaseAgreement_2" xlink:title="label: DeferredRevenueRoyaltyPurchaseAgreement to label_DeferredRevenueRoyaltyPurchaseAgreement"/>
    <label xlink:type="resource" xlink:label="label_DeferredRevenueRoyaltyPurchaseAgreement_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DeferredRevenueRoyaltyPurchaseAgreement" xml:lang="en-US" id="label_DeferredRevenueRoyaltyPurchaseAgreement_3">This element represents the carrying value of deferred revenue recorded with regard to agreement to sell rights to receive royalty payments, as on the balance sheet date.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredRevenueRoyaltyPurchaseAgreement" xlink:to="label_DeferredRevenueRoyaltyPurchaseAgreement_3" xlink:title="label: DeferredRevenueRoyaltyPurchaseAgreement to label_DeferredRevenueRoyaltyPurchaseAgreement"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue" xlink:label="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue" xlink:title="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue"/>
    <label xlink:type="resource" xlink:label="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue" xml:lang="en-US" id="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue">Fair Value, Measurement with Unobservable Inputs Reconciliation Recurring Basis, Liabilities Value</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue" xlink:to="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue" xlink:title="label: FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue to label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue"/>
    <label xlink:type="resource" xlink:label="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue" xml:lang="en-US" id="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue_2">This element represents a liability measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue" xlink:to="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue_2" xlink:title="label: FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue to label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue"/>
    <label xlink:type="resource" xlink:label="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue_3" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:title="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue" xml:lang="en-US" id="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue_3">Balance, at beginning of period</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue" xlink:to="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue_3" xlink:title="label: FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue to label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue"/>
    <label xlink:type="resource" xlink:label="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue_4" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:title="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue" xml:lang="en-US" id="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue_4">Balance, at ending of period</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue" xlink:to="label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue_4" xlink:title="label: FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue to label_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesValue"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans" xlink:label="ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans" xlink:title="ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans" xml:lang="en-US" id="label_ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans">This element represents the shares of common stock authorized by shareholders for issuance under the Stock and Option plan.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans" xlink:to="label_ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans" xlink:title="label: ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans to label_ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans_2" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:title="label_ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans" xml:lang="en-US" id="label_ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans_2">Number of shares of common stock authorized for issuance under the Company's Amended and Restated 2006 Stock and Option Plan, Beginning Balance (in shares)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans" xlink:to="label_ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans_2" xlink:title="label: ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans to label_ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans_3" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:title="label_ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans" xml:lang="en-US" id="label_ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans_3">Number of shares of common stock authorized for issuance under the Company's Amended and Restated 2006 Stock and Option Plan, Ending Balance (in shares)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans" xlink:to="label_ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans_3" xlink:title="label: ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans to label_ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans_4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans" xml:lang="en-US" id="label_ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans_4">Share-based Compensation, Shares Authorized under Stock and Option Plans</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans" xlink:to="label_ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans_4" xlink:title="label: ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans to label_ShareBasedCompensationSharesAuthorizedUnderStockAndOptionPlans"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementNoticePeriodRequiredForTerminationPriorToMarketingApprovalMonths" xlink:label="CollaborativeArrangementNoticePeriodRequiredForTerminationPriorToMarketingApprovalMonths" xlink:title="CollaborativeArrangementNoticePeriodRequiredForTerminationPriorToMarketingApprovalMonths"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementNoticePeriodRequiredForTerminationPriorToMarketingApprovalMonths" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CollaborativeArrangementNoticePeriodRequiredForTerminationPriorToMarketingApprovalMonths" xml:lang="en-US" id="label_CollaborativeArrangementNoticePeriodRequiredForTerminationPriorToMarketingApprovalMonths">Notice period required to terminate without cause prior to receipt of marketing approval (in months)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementNoticePeriodRequiredForTerminationPriorToMarketingApprovalMonths" xlink:to="label_CollaborativeArrangementNoticePeriodRequiredForTerminationPriorToMarketingApprovalMonths" xlink:title="label: CollaborativeArrangementNoticePeriodRequiredForTerminationPriorToMarketingApprovalMonths to label_CollaborativeArrangementNoticePeriodRequiredForTerminationPriorToMarketingApprovalMonths"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementNoticePeriodRequiredForTerminationPriorToMarketingApprovalMonths_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaborativeArrangementNoticePeriodRequiredForTerminationPriorToMarketingApprovalMonths" xml:lang="en-US" id="label_CollaborativeArrangementNoticePeriodRequiredForTerminationPriorToMarketingApprovalMonths_2">The number of months notice required to terminate a collaboration agreement prior to the receipt of marketing approval.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementNoticePeriodRequiredForTerminationPriorToMarketingApprovalMonths" xlink:to="label_CollaborativeArrangementNoticePeriodRequiredForTerminationPriorToMarketingApprovalMonths_2" xlink:title="label: CollaborativeArrangementNoticePeriodRequiredForTerminationPriorToMarketingApprovalMonths to label_CollaborativeArrangementNoticePeriodRequiredForTerminationPriorToMarketingApprovalMonths"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementNoticePeriodRequiredForTerminationPriorToMarketingApprovalMonths_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementNoticePeriodRequiredForTerminationPriorToMarketingApprovalMonths" xml:lang="en-US" id="label_CollaborativeArrangementNoticePeriodRequiredForTerminationPriorToMarketingApprovalMonths_3">Collaborative Arrangement, Notice Period Required for Termination Prior to Marketing Approval, Months</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementNoticePeriodRequiredForTerminationPriorToMarketingApprovalMonths" xlink:to="label_CollaborativeArrangementNoticePeriodRequiredForTerminationPriorToMarketingApprovalMonths_3" xlink:title="label: CollaborativeArrangementNoticePeriodRequiredForTerminationPriorToMarketingApprovalMonths to label_CollaborativeArrangementNoticePeriodRequiredForTerminationPriorToMarketingApprovalMonths"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementNoticePeriodRequiredForTerminationAfterMarketingApprovalYears" xlink:label="CollaborativeArrangementNoticePeriodRequiredForTerminationAfterMarketingApprovalYears" xlink:title="CollaborativeArrangementNoticePeriodRequiredForTerminationAfterMarketingApprovalYears"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementNoticePeriodRequiredForTerminationAfterMarketingApprovalYears" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CollaborativeArrangementNoticePeriodRequiredForTerminationAfterMarketingApprovalYears" xml:lang="en-US" id="label_CollaborativeArrangementNoticePeriodRequiredForTerminationAfterMarketingApprovalYears">Notice period required to terminate without cause after receipt of marketing approval (in years)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementNoticePeriodRequiredForTerminationAfterMarketingApprovalYears" xlink:to="label_CollaborativeArrangementNoticePeriodRequiredForTerminationAfterMarketingApprovalYears" xlink:title="label: CollaborativeArrangementNoticePeriodRequiredForTerminationAfterMarketingApprovalYears to label_CollaborativeArrangementNoticePeriodRequiredForTerminationAfterMarketingApprovalYears"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementNoticePeriodRequiredForTerminationAfterMarketingApprovalYears_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaborativeArrangementNoticePeriodRequiredForTerminationAfterMarketingApprovalYears" xml:lang="en-US" id="label_CollaborativeArrangementNoticePeriodRequiredForTerminationAfterMarketingApprovalYears_2">The minimum number of years notice required to terminate a collaboration agreement after the receipt of marketing approval.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementNoticePeriodRequiredForTerminationAfterMarketingApprovalYears" xlink:to="label_CollaborativeArrangementNoticePeriodRequiredForTerminationAfterMarketingApprovalYears_2" xlink:title="label: CollaborativeArrangementNoticePeriodRequiredForTerminationAfterMarketingApprovalYears to label_CollaborativeArrangementNoticePeriodRequiredForTerminationAfterMarketingApprovalYears"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementNoticePeriodRequiredForTerminationAfterMarketingApprovalYears_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementNoticePeriodRequiredForTerminationAfterMarketingApprovalYears" xml:lang="en-US" id="label_CollaborativeArrangementNoticePeriodRequiredForTerminationAfterMarketingApprovalYears_3">Collaborative Arrangement, Notice Period Required for Termination after Marketing Approval, Years</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementNoticePeriodRequiredForTerminationAfterMarketingApprovalYears" xlink:to="label_CollaborativeArrangementNoticePeriodRequiredForTerminationAfterMarketingApprovalYears_3" xlink:title="label: CollaborativeArrangementNoticePeriodRequiredForTerminationAfterMarketingApprovalYears to label_CollaborativeArrangementNoticePeriodRequiredForTerminationAfterMarketingApprovalYears"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityNoncurrent" xlink:label="SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityNoncurrent" xlink:title="SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityNoncurrent"/>
    <label xlink:type="resource" xlink:label="label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityNoncurrent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityNoncurrent" xml:lang="en-US" id="label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityNoncurrent">Secured Long-term Debt and Embedded Derivative Fair Value of Embedded Derivative Liability, Noncurrent</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityNoncurrent" xlink:to="label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityNoncurrent" xlink:title="label: SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityNoncurrent to label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityNoncurrent"/>
    <label xlink:type="resource" xlink:label="label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityNoncurrent_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityNoncurrent" xml:lang="en-US" id="label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityNoncurrent_2">Secured notes (due 2012), excluding current portion</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityNoncurrent" xlink:to="label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityNoncurrent_2" xlink:title="label: SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityNoncurrent to label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityNoncurrent"/>
    <label xlink:type="resource" xlink:label="label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityNoncurrent_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityNoncurrent" xml:lang="en-US" id="label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityNoncurrent_3">Carrying value as of the balance sheet date of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer), excluding the current portion, if any, and the fair value as of the balance sheet date of the embedded derivative classified as a noncurrent liability.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityNoncurrent" xlink:to="label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityNoncurrent_3" xlink:title="label: SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityNoncurrent to label_SecuredLongTermDebtAndEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilityNoncurrent"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_September2009FinancialTransactionExpenses" xlink:label="September2009FinancialTransactionExpenses" xlink:title="September2009FinancialTransactionExpenses"/>
    <label xlink:type="resource" xlink:label="label_September2009FinancialTransactionExpenses" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_September2009FinancialTransactionExpenses" xml:lang="en-US" id="label_September2009FinancialTransactionExpenses">September 2009, Financial Transaction Expenses</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="September2009FinancialTransactionExpenses" xlink:to="label_September2009FinancialTransactionExpenses" xlink:title="label: September2009FinancialTransactionExpenses to label_September2009FinancialTransactionExpenses"/>
    <label xlink:type="resource" xlink:label="label_September2009FinancialTransactionExpenses_2" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_September2009FinancialTransactionExpenses" xml:lang="en-US" id="label_September2009FinancialTransactionExpenses_2">Total September 2009 financial transaction expenses</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="September2009FinancialTransactionExpenses" xlink:to="label_September2009FinancialTransactionExpenses_2" xlink:title="label: September2009FinancialTransactionExpenses to label_September2009FinancialTransactionExpenses"/>
    <label xlink:type="resource" xlink:label="label_September2009FinancialTransactionExpenses_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_September2009FinancialTransactionExpenses" xml:lang="en-US" id="label_September2009FinancialTransactionExpenses_3">The total September 2009 financial transaction expenses.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="September2009FinancialTransactionExpenses" xlink:to="label_September2009FinancialTransactionExpenses_3" xlink:title="label: September2009FinancialTransactionExpenses to label_September2009FinancialTransactionExpenses"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_September2009FinancialTransactionLiabilities" xlink:label="September2009FinancialTransactionLiabilities" xlink:title="September2009FinancialTransactionLiabilities"/>
    <label xlink:type="resource" xlink:label="label_September2009FinancialTransactionLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_September2009FinancialTransactionLiabilities" xml:lang="en-US" id="label_September2009FinancialTransactionLiabilities">September 2009, Financial Transaction Liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="September2009FinancialTransactionLiabilities" xlink:to="label_September2009FinancialTransactionLiabilities" xlink:title="label: September2009FinancialTransactionLiabilities to label_September2009FinancialTransactionLiabilities"/>
    <label xlink:type="resource" xlink:label="label_September2009FinancialTransactionLiabilities_2" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_September2009FinancialTransactionLiabilities" xml:lang="en-US" id="label_September2009FinancialTransactionLiabilities_2">Total liabilities related to September 2009 financial transactions</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="September2009FinancialTransactionLiabilities" xlink:to="label_September2009FinancialTransactionLiabilities_2" xlink:title="label: September2009FinancialTransactionLiabilities to label_September2009FinancialTransactionLiabilities"/>
    <label xlink:type="resource" xlink:label="label_September2009FinancialTransactionLiabilities_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_September2009FinancialTransactionLiabilities" xml:lang="en-US" id="label_September2009FinancialTransactionLiabilities_3">The total liabilities related to September 2009 financial transactions.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="September2009FinancialTransactionLiabilities" xlink:to="label_September2009FinancialTransactionLiabilities_3" xlink:title="label: September2009FinancialTransactionLiabilities to label_September2009FinancialTransactionLiabilities"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_AmortizedPortionOfUpFrontPayment" xlink:label="AmortizedPortionOfUpFrontPayment" xlink:title="AmortizedPortionOfUpFrontPayment"/>
    <label xlink:type="resource" xlink:label="label_AmortizedPortionOfUpFrontPayment" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AmortizedPortionOfUpFrontPayment" xml:lang="en-US" id="label_AmortizedPortionOfUpFrontPayment">Amortized portion of up-front payment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmortizedPortionOfUpFrontPayment" xlink:to="label_AmortizedPortionOfUpFrontPayment" xlink:title="label: AmortizedPortionOfUpFrontPayment to label_AmortizedPortionOfUpFrontPayment"/>
    <label xlink:type="resource" xlink:label="label_AmortizedPortionOfUpFrontPayment_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AmortizedPortionOfUpFrontPayment" xml:lang="en-US" id="label_AmortizedPortionOfUpFrontPayment_2">Amortized Portion of up Front Payment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmortizedPortionOfUpFrontPayment" xlink:to="label_AmortizedPortionOfUpFrontPayment_2" xlink:title="label: AmortizedPortionOfUpFrontPayment to label_AmortizedPortionOfUpFrontPayment"/>
    <label xlink:type="resource" xlink:label="label_AmortizedPortionOfUpFrontPayment_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_AmortizedPortionOfUpFrontPayment" xml:lang="en-US" id="label_AmortizedPortionOfUpFrontPayment_3">This element represents the amortized portion of the up-front payment.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmortizedPortionOfUpFrontPayment" xlink:to="label_AmortizedPortionOfUpFrontPayment_3" xlink:title="label: AmortizedPortionOfUpFrontPayment to label_AmortizedPortionOfUpFrontPayment"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ConvertibleSeniorSubordinatedNotes3.35PercentDue2015Member" xlink:label="ConvertibleSeniorSubordinatedNotes3.35PercentDue2015Member" xlink:title="ConvertibleSeniorSubordinatedNotes3.35PercentDue2015Member"/>
    <label xlink:type="resource" xlink:label="label_ConvertibleSeniorSubordinatedNotes3.35PercentDue2015Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ConvertibleSeniorSubordinatedNotes3.35PercentDue2015Member" xml:lang="en-US" id="label_ConvertibleSeniorSubordinatedNotes3.35PercentDue2015Member">2015 Notes</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleSeniorSubordinatedNotes3.35PercentDue2015Member" xlink:to="label_ConvertibleSeniorSubordinatedNotes3.35PercentDue2015Member" xlink:title="label: ConvertibleSeniorSubordinatedNotes3.35PercentDue2015Member to label_ConvertibleSeniorSubordinatedNotes3.35PercentDue2015Member"/>
    <label xlink:type="resource" xlink:label="label_ConvertibleSeniorSubordinatedNotes3.35PercentDue2015Member_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ConvertibleSeniorSubordinatedNotes3.35PercentDue2015Member" xml:lang="en-US" id="label_ConvertibleSeniorSubordinatedNotes3.35PercentDue2015Member_2">A contractual arrangement to borrow and repay an amount, by issuance of long-term convertible senior subordinated notes, bearing interest at the rate of 3.35% per annum, maturing in 2015.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleSeniorSubordinatedNotes3.35PercentDue2015Member" xlink:to="label_ConvertibleSeniorSubordinatedNotes3.35PercentDue2015Member_2" xlink:title="label: ConvertibleSeniorSubordinatedNotes3.35PercentDue2015Member to label_ConvertibleSeniorSubordinatedNotes3.35PercentDue2015Member"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ConvertibleSeniorSubordinatedNotes4.75PercentDue2013Member" xlink:label="ConvertibleSeniorSubordinatedNotes4.75PercentDue2013Member" xlink:title="ConvertibleSeniorSubordinatedNotes4.75PercentDue2013Member"/>
    <label xlink:type="resource" xlink:label="label_ConvertibleSeniorSubordinatedNotes4.75PercentDue2013Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ConvertibleSeniorSubordinatedNotes4.75PercentDue2013Member" xml:lang="en-US" id="label_ConvertibleSeniorSubordinatedNotes4.75PercentDue2013Member">2013 Notes</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleSeniorSubordinatedNotes4.75PercentDue2013Member" xlink:to="label_ConvertibleSeniorSubordinatedNotes4.75PercentDue2013Member" xlink:title="label: ConvertibleSeniorSubordinatedNotes4.75PercentDue2013Member to label_ConvertibleSeniorSubordinatedNotes4.75PercentDue2013Member"/>
    <label xlink:type="resource" xlink:label="label_ConvertibleSeniorSubordinatedNotes4.75PercentDue2013Member_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ConvertibleSeniorSubordinatedNotes4.75PercentDue2013Member" xml:lang="en-US" id="label_ConvertibleSeniorSubordinatedNotes4.75PercentDue2013Member_2">A contractual arrangement to borrow and repay an amount, by issuance of long-term convertible senior subordinated notes, bearing interest at the rate of interest of 4.75 percent per annum, maturing in 2013.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleSeniorSubordinatedNotes4.75PercentDue2013Member" xlink:to="label_ConvertibleSeniorSubordinatedNotes4.75PercentDue2013Member_2" xlink:title="label: ConvertibleSeniorSubordinatedNotes4.75PercentDue2013Member to label_ConvertibleSeniorSubordinatedNotes4.75PercentDue2013Member"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_PeriodForWhichTheHoldersOfNotesCanClaimRemedyFromDateOfDefault" xlink:label="PeriodForWhichTheHoldersOfNotesCanClaimRemedyFromDateOfDefault" xlink:title="PeriodForWhichTheHoldersOfNotesCanClaimRemedyFromDateOfDefault"/>
    <label xlink:type="resource" xlink:label="label_PeriodForWhichTheHoldersOfNotesCanClaimRemedyFromDateOfDefault" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PeriodForWhichTheHoldersOfNotesCanClaimRemedyFromDateOfDefault" xml:lang="en-US" id="label_PeriodForWhichTheHoldersOfNotesCanClaimRemedyFromDateOfDefault">Period for which The Holders of Notes can Claim Remedy from Date of Default</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PeriodForWhichTheHoldersOfNotesCanClaimRemedyFromDateOfDefault" xlink:to="label_PeriodForWhichTheHoldersOfNotesCanClaimRemedyFromDateOfDefault" xlink:title="label: PeriodForWhichTheHoldersOfNotesCanClaimRemedyFromDateOfDefault to label_PeriodForWhichTheHoldersOfNotesCanClaimRemedyFromDateOfDefault"/>
    <label xlink:type="resource" xlink:label="label_PeriodForWhichTheHoldersOfNotesCanClaimRemedyFromDateOfDefault_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PeriodForWhichTheHoldersOfNotesCanClaimRemedyFromDateOfDefault" xml:lang="en-US" id="label_PeriodForWhichTheHoldersOfNotesCanClaimRemedyFromDateOfDefault_2">Period for which the holders of notes can claim remedy from date of default</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PeriodForWhichTheHoldersOfNotesCanClaimRemedyFromDateOfDefault" xlink:to="label_PeriodForWhichTheHoldersOfNotesCanClaimRemedyFromDateOfDefault_2" xlink:title="label: PeriodForWhichTheHoldersOfNotesCanClaimRemedyFromDateOfDefault to label_PeriodForWhichTheHoldersOfNotesCanClaimRemedyFromDateOfDefault"/>
    <label xlink:type="resource" xlink:label="label_PeriodForWhichTheHoldersOfNotesCanClaimRemedyFromDateOfDefault_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_PeriodForWhichTheHoldersOfNotesCanClaimRemedyFromDateOfDefault" xml:lang="en-US" id="label_PeriodForWhichTheHoldersOfNotesCanClaimRemedyFromDateOfDefault_3">The period for which the holders of notes can claim remedy from date of default.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PeriodForWhichTheHoldersOfNotesCanClaimRemedyFromDateOfDefault" xlink:to="label_PeriodForWhichTheHoldersOfNotesCanClaimRemedyFromDateOfDefault_3" xlink:title="label: PeriodForWhichTheHoldersOfNotesCanClaimRemedyFromDateOfDefault to label_PeriodForWhichTheHoldersOfNotesCanClaimRemedyFromDateOfDefault"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_SpecialAnnualInterestRate" xlink:label="SpecialAnnualInterestRate" xlink:title="SpecialAnnualInterestRate"/>
    <label xlink:type="resource" xlink:label="label_SpecialAnnualInterestRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SpecialAnnualInterestRate" xml:lang="en-US" id="label_SpecialAnnualInterestRate">Special Annual Interest Rate</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SpecialAnnualInterestRate" xlink:to="label_SpecialAnnualInterestRate" xlink:title="label: SpecialAnnualInterestRate to label_SpecialAnnualInterestRate"/>
    <label xlink:type="resource" xlink:label="label_SpecialAnnualInterestRate_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SpecialAnnualInterestRate" xml:lang="en-US" id="label_SpecialAnnualInterestRate_2">Special annual interest rate (as a percent)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SpecialAnnualInterestRate" xlink:to="label_SpecialAnnualInterestRate_2" xlink:title="label: SpecialAnnualInterestRate to label_SpecialAnnualInterestRate"/>
    <label xlink:type="resource" xlink:label="label_SpecialAnnualInterestRate_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_SpecialAnnualInterestRate" xml:lang="en-US" id="label_SpecialAnnualInterestRate_3">The element represents the percentage of annual special interest, on the outstanding principal amount of notes, in the event of default under indenture.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SpecialAnnualInterestRate" xlink:to="label_SpecialAnnualInterestRate_3" xlink:title="label: SpecialAnnualInterestRate to label_SpecialAnnualInterestRate"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_DebtOfferingsFairValueDisclosureLineItems" xlink:label="DebtOfferingsFairValueDisclosureLineItems" xlink:title="DebtOfferingsFairValueDisclosureLineItems"/>
    <label xlink:type="resource" xlink:label="label_DebtOfferingsFairValueDisclosureLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtOfferingsFairValueDisclosureLineItems" xml:lang="en-US" id="label_DebtOfferingsFairValueDisclosureLineItems">Debt Offerings, Fair Value Disclosure [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtOfferingsFairValueDisclosureLineItems" xlink:to="label_DebtOfferingsFairValueDisclosureLineItems" xlink:title="label: DebtOfferingsFairValueDisclosureLineItems to label_DebtOfferingsFairValueDisclosureLineItems"/>
    <label xlink:type="resource" xlink:label="label_DebtOfferingsFairValueDisclosureLineItems_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtOfferingsFairValueDisclosureLineItems" xml:lang="en-US" id="label_DebtOfferingsFairValueDisclosureLineItems_2">Debt Offerings, Fair Value Disclosure</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtOfferingsFairValueDisclosureLineItems" xlink:to="label_DebtOfferingsFairValueDisclosureLineItems_2" xlink:title="label: DebtOfferingsFairValueDisclosureLineItems to label_DebtOfferingsFairValueDisclosureLineItems"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_PaymentsOfDebtIssuanceExpenses" xlink:label="PaymentsOfDebtIssuanceExpenses" xlink:title="PaymentsOfDebtIssuanceExpenses"/>
    <label xlink:type="resource" xlink:label="label_PaymentsOfDebtIssuanceExpenses" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_PaymentsOfDebtIssuanceExpenses" xml:lang="en-US" id="label_PaymentsOfDebtIssuanceExpenses">The cash outflow paid to third parties in connection with debt origination (excluding any Underwriting Discounts), which will be amortized over the remaining maturity period of the associated long-term debt.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsOfDebtIssuanceExpenses" xlink:to="label_PaymentsOfDebtIssuanceExpenses" xlink:title="label: PaymentsOfDebtIssuanceExpenses to label_PaymentsOfDebtIssuanceExpenses"/>
    <label xlink:type="resource" xlink:label="label_PaymentsOfDebtIssuanceExpenses_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PaymentsOfDebtIssuanceExpenses" xml:lang="en-US" id="label_PaymentsOfDebtIssuanceExpenses_2">Payments of Debt Issuance Expenses</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsOfDebtIssuanceExpenses" xlink:to="label_PaymentsOfDebtIssuanceExpenses_2" xlink:title="label: PaymentsOfDebtIssuanceExpenses to label_PaymentsOfDebtIssuanceExpenses"/>
    <label xlink:type="resource" xlink:label="label_PaymentsOfDebtIssuanceExpenses_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PaymentsOfDebtIssuanceExpenses" xml:lang="en-US" id="label_PaymentsOfDebtIssuanceExpenses_3">Debt issuance costs</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsOfDebtIssuanceExpenses" xlink:to="label_PaymentsOfDebtIssuanceExpenses_3" xlink:title="label: PaymentsOfDebtIssuanceExpenses to label_PaymentsOfDebtIssuanceExpenses"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ConditionForProvisionalRedemptionIfPercentageInExcessOfConversionPriceForCommonStockTradedForAtleast20DaysWithin30ConsecutiveTradingDays" xlink:label="ConditionForProvisionalRedemptionIfPercentageInExcessOfConversionPriceForCommonStockTradedForAtleast20DaysWithin30ConsecutiveTradingDays" xlink:title="ConditionForProvisionalRedemptionIfPercentageInExcessOfConversionPriceForCommonStockTradedForAtleast20DaysWithin30ConsecutiveTradingDays"/>
    <label xlink:type="resource" xlink:label="label_ConditionForProvisionalRedemptionIfPercentageInExcessOfConversionPriceForCommonStockTradedForAtleast20DaysWithin30ConsecutiveTradingDays" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ConditionForProvisionalRedemptionIfPercentageInExcessOfConversionPriceForCommonStockTradedForAtleast20DaysWithin30ConsecutiveTradingDays" xml:lang="en-US" id="label_ConditionForProvisionalRedemptionIfPercentageInExcessOfConversionPriceForCommonStockTradedForAtleast20DaysWithin30ConsecutiveTradingDays">Condition for Provisional Redemption if Percentage in Excess of Conversion Price for Common Stock Traded for Atleast 20 Days Within 30 Consecutive Trading Days</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConditionForProvisionalRedemptionIfPercentageInExcessOfConversionPriceForCommonStockTradedForAtleast20DaysWithin30ConsecutiveTradingDays" xlink:to="label_ConditionForProvisionalRedemptionIfPercentageInExcessOfConversionPriceForCommonStockTradedForAtleast20DaysWithin30ConsecutiveTradingDays" xlink:title="label: ConditionForProvisionalRedemptionIfPercentageInExcessOfConversionPriceForCommonStockTradedForAtleast20DaysWithin30ConsecutiveTradingDays to label_ConditionForProvisionalRedemptionIfPercentageInExcessOfConversionPriceForCommonStockTradedForAtleast20DaysWithin30ConsecutiveTradingDays"/>
    <label xlink:type="resource" xlink:label="label_ConditionForProvisionalRedemptionIfPercentageInExcessOfConversionPriceForCommonStockTradedForAtleast20DaysWithin30ConsecutiveTradingDays_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ConditionForProvisionalRedemptionIfPercentageInExcessOfConversionPriceForCommonStockTradedForAtleast20DaysWithin30ConsecutiveTradingDays" xml:lang="en-US" id="label_ConditionForProvisionalRedemptionIfPercentageInExcessOfConversionPriceForCommonStockTradedForAtleast20DaysWithin30ConsecutiveTradingDays_2">Percent closing price needs to exceed the conversion price for at least 20 trading days within 30 consecutive trading days for provisional redemption (as a percent)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConditionForProvisionalRedemptionIfPercentageInExcessOfConversionPriceForCommonStockTradedForAtleast20DaysWithin30ConsecutiveTradingDays" xlink:to="label_ConditionForProvisionalRedemptionIfPercentageInExcessOfConversionPriceForCommonStockTradedForAtleast20DaysWithin30ConsecutiveTradingDays_2" xlink:title="label: ConditionForProvisionalRedemptionIfPercentageInExcessOfConversionPriceForCommonStockTradedForAtleast20DaysWithin30ConsecutiveTradingDays to label_ConditionForProvisionalRedemptionIfPercentageInExcessOfConversionPriceForCommonStockTradedForAtleast20DaysWithin30ConsecutiveTradingDays"/>
    <label xlink:type="resource" xlink:label="label_ConditionForProvisionalRedemptionIfPercentageInExcessOfConversionPriceForCommonStockTradedForAtleast20DaysWithin30ConsecutiveTradingDays_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ConditionForProvisionalRedemptionIfPercentageInExcessOfConversionPriceForCommonStockTradedForAtleast20DaysWithin30ConsecutiveTradingDays" xml:lang="en-US" id="label_ConditionForProvisionalRedemptionIfPercentageInExcessOfConversionPriceForCommonStockTradedForAtleast20DaysWithin30ConsecutiveTradingDays_3">This element represents the condition for provisional redemption, if percentage is in excess of conversion price for common stock that is traded for at least 20 days within 30 consecutive trading days.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConditionForProvisionalRedemptionIfPercentageInExcessOfConversionPriceForCommonStockTradedForAtleast20DaysWithin30ConsecutiveTradingDays" xlink:to="label_ConditionForProvisionalRedemptionIfPercentageInExcessOfConversionPriceForCommonStockTradedForAtleast20DaysWithin30ConsecutiveTradingDays_3" xlink:title="label: ConditionForProvisionalRedemptionIfPercentageInExcessOfConversionPriceForCommonStockTradedForAtleast20DaysWithin30ConsecutiveTradingDays to label_ConditionForProvisionalRedemptionIfPercentageInExcessOfConversionPriceForCommonStockTradedForAtleast20DaysWithin30ConsecutiveTradingDays"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_PercentageOfPrincipalAmountUsedInComputationOfProvisionalRedemptionPrice" xlink:label="PercentageOfPrincipalAmountUsedInComputationOfProvisionalRedemptionPrice" xlink:title="PercentageOfPrincipalAmountUsedInComputationOfProvisionalRedemptionPrice"/>
    <label xlink:type="resource" xlink:label="label_PercentageOfPrincipalAmountUsedInComputationOfProvisionalRedemptionPrice" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PercentageOfPrincipalAmountUsedInComputationOfProvisionalRedemptionPrice" xml:lang="en-US" id="label_PercentageOfPrincipalAmountUsedInComputationOfProvisionalRedemptionPrice">Percentage of Principal Amount Used in Computation of Provisional Redemption Price</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageOfPrincipalAmountUsedInComputationOfProvisionalRedemptionPrice" xlink:to="label_PercentageOfPrincipalAmountUsedInComputationOfProvisionalRedemptionPrice" xlink:title="label: PercentageOfPrincipalAmountUsedInComputationOfProvisionalRedemptionPrice to label_PercentageOfPrincipalAmountUsedInComputationOfProvisionalRedemptionPrice"/>
    <label xlink:type="resource" xlink:label="label_PercentageOfPrincipalAmountUsedInComputationOfProvisionalRedemptionPrice_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PercentageOfPrincipalAmountUsedInComputationOfProvisionalRedemptionPrice" xml:lang="en-US" id="label_PercentageOfPrincipalAmountUsedInComputationOfProvisionalRedemptionPrice_2">Percentage of principal amount used in computation of provisional redemption price (as a percent)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageOfPrincipalAmountUsedInComputationOfProvisionalRedemptionPrice" xlink:to="label_PercentageOfPrincipalAmountUsedInComputationOfProvisionalRedemptionPrice_2" xlink:title="label: PercentageOfPrincipalAmountUsedInComputationOfProvisionalRedemptionPrice to label_PercentageOfPrincipalAmountUsedInComputationOfProvisionalRedemptionPrice"/>
    <label xlink:type="resource" xlink:label="label_PercentageOfPrincipalAmountUsedInComputationOfProvisionalRedemptionPrice_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_PercentageOfPrincipalAmountUsedInComputationOfProvisionalRedemptionPrice" xml:lang="en-US" id="label_PercentageOfPrincipalAmountUsedInComputationOfProvisionalRedemptionPrice_3">The percentage of principal amount used in computation of provisional redemption price.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageOfPrincipalAmountUsedInComputationOfProvisionalRedemptionPrice" xlink:to="label_PercentageOfPrincipalAmountUsedInComputationOfProvisionalRedemptionPrice_3" xlink:title="label: PercentageOfPrincipalAmountUsedInComputationOfProvisionalRedemptionPrice to label_PercentageOfPrincipalAmountUsedInComputationOfProvisionalRedemptionPrice"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_InterestPaymentsOnNotesProvisionallyRedeemedEqualToInterestOfSpecifiedNumberOfYears" xlink:label="InterestPaymentsOnNotesProvisionallyRedeemedEqualToInterestOfSpecifiedNumberOfYears" xlink:title="InterestPaymentsOnNotesProvisionallyRedeemedEqualToInterestOfSpecifiedNumberOfYears"/>
    <label xlink:type="resource" xlink:label="label_InterestPaymentsOnNotesProvisionallyRedeemedEqualToInterestOfSpecifiedNumberOfYears" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InterestPaymentsOnNotesProvisionallyRedeemedEqualToInterestOfSpecifiedNumberOfYears" xml:lang="en-US" id="label_InterestPaymentsOnNotesProvisionallyRedeemedEqualToInterestOfSpecifiedNumberOfYears">Interest Payments on Notes Provisionally Redeemed Equal to Interest of Specified Number of Years</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InterestPaymentsOnNotesProvisionallyRedeemedEqualToInterestOfSpecifiedNumberOfYears" xlink:to="label_InterestPaymentsOnNotesProvisionallyRedeemedEqualToInterestOfSpecifiedNumberOfYears" xlink:title="label: InterestPaymentsOnNotesProvisionallyRedeemedEqualToInterestOfSpecifiedNumberOfYears to label_InterestPaymentsOnNotesProvisionallyRedeemedEqualToInterestOfSpecifiedNumberOfYears"/>
    <label xlink:type="resource" xlink:label="label_InterestPaymentsOnNotesProvisionallyRedeemedEqualToInterestOfSpecifiedNumberOfYears_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_InterestPaymentsOnNotesProvisionallyRedeemedEqualToInterestOfSpecifiedNumberOfYears" xml:lang="en-US" id="label_InterestPaymentsOnNotesProvisionallyRedeemedEqualToInterestOfSpecifiedNumberOfYears_2">Total interest payments on notes being provisionally redeemed equal to interest for specified number of years (in years)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InterestPaymentsOnNotesProvisionallyRedeemedEqualToInterestOfSpecifiedNumberOfYears" xlink:to="label_InterestPaymentsOnNotesProvisionallyRedeemedEqualToInterestOfSpecifiedNumberOfYears_2" xlink:title="label: InterestPaymentsOnNotesProvisionallyRedeemedEqualToInterestOfSpecifiedNumberOfYears to label_InterestPaymentsOnNotesProvisionallyRedeemedEqualToInterestOfSpecifiedNumberOfYears"/>
    <label xlink:type="resource" xlink:label="label_InterestPaymentsOnNotesProvisionallyRedeemedEqualToInterestOfSpecifiedNumberOfYears_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_InterestPaymentsOnNotesProvisionallyRedeemedEqualToInterestOfSpecifiedNumberOfYears" xml:lang="en-US" id="label_InterestPaymentsOnNotesProvisionallyRedeemedEqualToInterestOfSpecifiedNumberOfYears_3">This element represents the interest of the specified number of years which the entity would make interest payments for the notes being provisionally redeemed.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InterestPaymentsOnNotesProvisionallyRedeemedEqualToInterestOfSpecifiedNumberOfYears" xlink:to="label_InterestPaymentsOnNotesProvisionallyRedeemedEqualToInterestOfSpecifiedNumberOfYears_3" xlink:title="label: InterestPaymentsOnNotesProvisionallyRedeemedEqualToInterestOfSpecifiedNumberOfYears to label_InterestPaymentsOnNotesProvisionallyRedeemedEqualToInterestOfSpecifiedNumberOfYears"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementDeferredRevenuesThroughThirdPartyManufacturingNetwork" xlink:label="CollaborativeArrangementDeferredRevenuesThroughThirdPartyManufacturingNetwork" xlink:title="CollaborativeArrangementDeferredRevenuesThroughThirdPartyManufacturingNetwork"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementDeferredRevenuesThroughThirdPartyManufacturingNetwork" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementDeferredRevenuesThroughThirdPartyManufacturingNetwork" xml:lang="en-US" id="label_CollaborativeArrangementDeferredRevenuesThroughThirdPartyManufacturingNetwork">Collaborative Arrangement, Deferred Revenues Through Third Party Manufacturing Network</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementDeferredRevenuesThroughThirdPartyManufacturingNetwork" xlink:to="label_CollaborativeArrangementDeferredRevenuesThroughThirdPartyManufacturingNetwork" xlink:title="label: CollaborativeArrangementDeferredRevenuesThroughThirdPartyManufacturingNetwork to label_CollaborativeArrangementDeferredRevenuesThroughThirdPartyManufacturingNetwork"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementDeferredRevenuesThroughThirdPartyManufacturingNetwork_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CollaborativeArrangementDeferredRevenuesThroughThirdPartyManufacturingNetwork" xml:lang="en-US" id="label_CollaborativeArrangementDeferredRevenuesThroughThirdPartyManufacturingNetwork_2">Deferred revenue related to reimbursement of manufacturing services</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementDeferredRevenuesThroughThirdPartyManufacturingNetwork" xlink:to="label_CollaborativeArrangementDeferredRevenuesThroughThirdPartyManufacturingNetwork_2" xlink:title="label: CollaborativeArrangementDeferredRevenuesThroughThirdPartyManufacturingNetwork to label_CollaborativeArrangementDeferredRevenuesThroughThirdPartyManufacturingNetwork"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementDeferredRevenuesThroughThirdPartyManufacturingNetwork_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaborativeArrangementDeferredRevenuesThroughThirdPartyManufacturingNetwork" xml:lang="en-US" id="label_CollaborativeArrangementDeferredRevenuesThroughThirdPartyManufacturingNetwork_3">This element represents deferred revenues related to manufacturing services provided through the entity's third-party manufacturing network manufacturing services that collaborator has paid for, but which have not been completed.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementDeferredRevenuesThroughThirdPartyManufacturingNetwork" xlink:to="label_CollaborativeArrangementDeferredRevenuesThroughThirdPartyManufacturingNetwork_3" xlink:title="label: CollaborativeArrangementDeferredRevenuesThroughThirdPartyManufacturingNetwork to label_CollaborativeArrangementDeferredRevenuesThroughThirdPartyManufacturingNetwork"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ConditionForProvisionalRedemptionMinimumNumberOfDaysWithin30ConsecutiveTradingDaysTheClosingPriceNeedsToExceedTheConversionPrice" xlink:label="ConditionForProvisionalRedemptionMinimumNumberOfDaysWithin30ConsecutiveTradingDaysTheClosingPriceNeedsToExceedTheConversionPrice" xlink:title="ConditionForProvisionalRedemptionMinimumNumberOfDaysWithin30ConsecutiveTradingDaysTheClosingPriceNeedsToExceedTheConversionPrice"/>
    <label xlink:type="resource" xlink:label="label_ConditionForProvisionalRedemptionMinimumNumberOfDaysWithin30ConsecutiveTradingDaysTheClosingPriceNeedsToExceedTheConversionPrice" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ConditionForProvisionalRedemptionMinimumNumberOfDaysWithin30ConsecutiveTradingDaysTheClosingPriceNeedsToExceedTheConversionPrice" xml:lang="en-US" id="label_ConditionForProvisionalRedemptionMinimumNumberOfDaysWithin30ConsecutiveTradingDaysTheClosingPriceNeedsToExceedTheConversionPrice">Condition for Provisional Redemption, Minimum Number of Days within 30 Consecutive Trading Days, the Closing Price Needs to Exceed the Conversion Price</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConditionForProvisionalRedemptionMinimumNumberOfDaysWithin30ConsecutiveTradingDaysTheClosingPriceNeedsToExceedTheConversionPrice" xlink:to="label_ConditionForProvisionalRedemptionMinimumNumberOfDaysWithin30ConsecutiveTradingDaysTheClosingPriceNeedsToExceedTheConversionPrice" xlink:title="label: ConditionForProvisionalRedemptionMinimumNumberOfDaysWithin30ConsecutiveTradingDaysTheClosingPriceNeedsToExceedTheConversionPrice to label_ConditionForProvisionalRedemptionMinimumNumberOfDaysWithin30ConsecutiveTradingDaysTheClosingPriceNeedsToExceedTheConversionPrice"/>
    <label xlink:type="resource" xlink:label="label_ConditionForProvisionalRedemptionMinimumNumberOfDaysWithin30ConsecutiveTradingDaysTheClosingPriceNeedsToExceedTheConversionPrice_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ConditionForProvisionalRedemptionMinimumNumberOfDaysWithin30ConsecutiveTradingDaysTheClosingPriceNeedsToExceedTheConversionPrice" xml:lang="en-US" id="label_ConditionForProvisionalRedemptionMinimumNumberOfDaysWithin30ConsecutiveTradingDaysTheClosingPriceNeedsToExceedTheConversionPrice_2">Minimum number of days within 30 consecutive trading days the closing price needs to exceed the conversion price for provisional redemption (in days)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConditionForProvisionalRedemptionMinimumNumberOfDaysWithin30ConsecutiveTradingDaysTheClosingPriceNeedsToExceedTheConversionPrice" xlink:to="label_ConditionForProvisionalRedemptionMinimumNumberOfDaysWithin30ConsecutiveTradingDaysTheClosingPriceNeedsToExceedTheConversionPrice_2" xlink:title="label: ConditionForProvisionalRedemptionMinimumNumberOfDaysWithin30ConsecutiveTradingDaysTheClosingPriceNeedsToExceedTheConversionPrice to label_ConditionForProvisionalRedemptionMinimumNumberOfDaysWithin30ConsecutiveTradingDaysTheClosingPriceNeedsToExceedTheConversionPrice"/>
    <label xlink:type="resource" xlink:label="label_ConditionForProvisionalRedemptionMinimumNumberOfDaysWithin30ConsecutiveTradingDaysTheClosingPriceNeedsToExceedTheConversionPrice_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ConditionForProvisionalRedemptionMinimumNumberOfDaysWithin30ConsecutiveTradingDaysTheClosingPriceNeedsToExceedTheConversionPrice" xml:lang="en-US" id="label_ConditionForProvisionalRedemptionMinimumNumberOfDaysWithin30ConsecutiveTradingDaysTheClosingPriceNeedsToExceedTheConversionPrice_3">The number of trading days within a period of 30 consecutive trading days the closing price of the Company's common stock must exceed the applicable conversion price by 130% in order for the Company to, at its option, redeem all or part of the convertible notes.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConditionForProvisionalRedemptionMinimumNumberOfDaysWithin30ConsecutiveTradingDaysTheClosingPriceNeedsToExceedTheConversionPrice" xlink:to="label_ConditionForProvisionalRedemptionMinimumNumberOfDaysWithin30ConsecutiveTradingDaysTheClosingPriceNeedsToExceedTheConversionPrice_3" xlink:title="label: ConditionForProvisionalRedemptionMinimumNumberOfDaysWithin30ConsecutiveTradingDaysTheClosingPriceNeedsToExceedTheConversionPrice to label_ConditionForProvisionalRedemptionMinimumNumberOfDaysWithin30ConsecutiveTradingDaysTheClosingPriceNeedsToExceedTheConversionPrice"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ConditionForProvisionalRedemptionTotalConsecutiveTradingDaysDuringWhichTheClosingPriceMustExceedTheConversionPriceForAtLeast20TradingDaysForProvisionalRedemption" xlink:label="ConditionForProvisionalRedemptionTotalConsecutiveTradingDaysDuringWhichTheClosingPriceMustExceedTheConversionPriceForAtLeast20TradingDaysForProvisionalRedemption" xlink:title="ConditionForProvisionalRedemptionTotalConsecutiveTradingDaysDuringWhichTheClosingPriceMustExceedTheConversionPriceForAtLeast20TradingDaysForProvisionalRedemption"/>
    <label xlink:type="resource" xlink:label="label_ConditionForProvisionalRedemptionTotalConsecutiveTradingDaysDuringWhichTheClosingPriceMustExceedTheConversionPriceForAtLeast20TradingDaysForProvisionalRedemption" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ConditionForProvisionalRedemptionTotalConsecutiveTradingDaysDuringWhichTheClosingPriceMustExceedTheConversionPriceForAtLeast20TradingDaysForProvisionalRedemption" xml:lang="en-US" id="label_ConditionForProvisionalRedemptionTotalConsecutiveTradingDaysDuringWhichTheClosingPriceMustExceedTheConversionPriceForAtLeast20TradingDaysForProvisionalRedemption">Condition for Provisional Redemption, Total Consecutive Trading Days During which the Closing Price Must Exceed the Conversion Price for At Least 20 Trading Days or Provisional Redemption</label>
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    <label xlink:type="resource" xlink:label="label_ConditionForProvisionalRedemptionTotalConsecutiveTradingDaysDuringWhichTheClosingPriceMustExceedTheConversionPriceForAtLeast20TradingDaysForProvisionalRedemption_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ConditionForProvisionalRedemptionTotalConsecutiveTradingDaysDuringWhichTheClosingPriceMustExceedTheConversionPriceForAtLeast20TradingDaysForProvisionalRedemption" xml:lang="en-US" id="label_ConditionForProvisionalRedemptionTotalConsecutiveTradingDaysDuringWhichTheClosingPriceMustExceedTheConversionPriceForAtLeast20TradingDaysForProvisionalRedemption_2">Total consecutive trading days during which the closing price must exceed the conversion price for at least 20 trading days for provisional redemption (in days)</label>
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    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" xlink:label="ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" xlink:title="ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" xml:lang="en-US" id="label_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock">Schedule of Deferred Tax Assets and Liabilities [Table Text Block]</label>
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    <label xlink:type="resource" xlink:label="label_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" xml:lang="en-US" id="label_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock_3">Disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" xlink:to="label_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock_3" xlink:title="label: ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock to label_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract" xlink:label="IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract" xlink:title="IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract"/>
    <label xlink:type="resource" xlink:label="label_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract" xml:lang="en-US" id="label_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_2">Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract" xlink:to="label_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_2" xlink:title="label: IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract to label_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract"/>
    <label xlink:type="resource" xlink:label="label_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract" xml:lang="en-US" id="label_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract">Reconciliation of Income Tax Expense:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract" xlink:to="label_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract" xlink:title="label: IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract to label_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract"/>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxReconciliationUnbenefitedOperatingLosses" xlink:to="label_IncomeTaxReconciliationUnbenefitedOperatingLosses_3" xlink:title="label: IncomeTaxReconciliationUnbenefitedOperatingLosses to label_IncomeTaxReconciliationUnbenefitedOperatingLosses"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ComponentsOfDeferredTaxAssetsAbstract" xlink:label="ComponentsOfDeferredTaxAssetsAbstract" xlink:title="ComponentsOfDeferredTaxAssetsAbstract"/>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ComponentsOfDeferredTaxAssetsAbstract" xlink:to="label_ComponentsOfDeferredTaxAssetsAbstract" xlink:title="label: ComponentsOfDeferredTaxAssetsAbstract to label_ComponentsOfDeferredTaxAssetsAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_DeferredTaxAssetsPropertyPlantAndEquipment" xlink:label="DeferredTaxAssetsPropertyPlantAndEquipment" xlink:title="DeferredTaxAssetsPropertyPlantAndEquipment"/>
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    <label xlink:type="resource" xlink:label="label_DeferredTaxAssetsPropertyPlantAndEquipment_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DeferredTaxAssetsPropertyPlantAndEquipment" xml:lang="en-US" id="label_DeferredTaxAssetsPropertyPlantAndEquipment_3">This element represents the amount as of the balance sheet date, of the estimated future tax deductions attributable to the difference between the tax basis of capital assets and the basis of capital assets computed in accordance with generally accepted accounting principles. The difference in basis, attributable to different capitalization of costs, depreciation, or amortization methodologies, will decrease future taxable income, when such a difference in basis is realized. Capital assets include but are not limited to assets such as land, real estate, leasehold improvements, machinery and equipment and furniture and fixtures.</label>
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    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_DeferredTaxAssetsCapitalizedResearchAndDevelopmentCosts" xlink:label="DeferredTaxAssetsCapitalizedResearchAndDevelopmentCosts" xlink:title="DeferredTaxAssetsCapitalizedResearchAndDevelopmentCosts"/>
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    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_DeferredTaxAssetsAccruedExpensesAndOther" xlink:label="DeferredTaxAssetsAccruedExpensesAndOther" xlink:title="DeferredTaxAssetsAccruedExpensesAndOther"/>
    <label xlink:type="resource" xlink:label="label_DeferredTaxAssetsAccruedExpensesAndOther" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DeferredTaxAssetsAccruedExpensesAndOther" xml:lang="en-US" id="label_DeferredTaxAssetsAccruedExpensesAndOther">Deferred Tax Assets, Accrued Expenses and Other</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredTaxAssetsAccruedExpensesAndOther" xlink:to="label_DeferredTaxAssetsAccruedExpensesAndOther" xlink:title="label: DeferredTaxAssetsAccruedExpensesAndOther to label_DeferredTaxAssetsAccruedExpensesAndOther"/>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract" xlink:label="ComponentsOfDeferredTaxLiabilitiesAbstract" xlink:title="ComponentsOfDeferredTaxLiabilitiesAbstract"/>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ComponentsOfDeferredTaxLiabilitiesAbstract" xlink:to="label_ComponentsOfDeferredTaxLiabilitiesAbstract_2" xlink:title="label: ComponentsOfDeferredTaxLiabilitiesAbstract to label_ComponentsOfDeferredTaxLiabilitiesAbstract"/>
    <label xlink:type="resource" xlink:label="label_ComponentsOfDeferredTaxLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ComponentsOfDeferredTaxLiabilitiesAbstract" xml:lang="en-US" id="label_ComponentsOfDeferredTaxLiabilitiesAbstract">Deferred tax liabilities:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ComponentsOfDeferredTaxLiabilitiesAbstract" xlink:to="label_ComponentsOfDeferredTaxLiabilitiesAbstract" xlink:title="label: ComponentsOfDeferredTaxLiabilitiesAbstract to label_ComponentsOfDeferredTaxLiabilitiesAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_FurnitureAndEquipmentGross" xlink:label="FurnitureAndEquipmentGross" xlink:title="FurnitureAndEquipmentGross"/>
    <label xlink:type="resource" xlink:label="label_FurnitureAndEquipmentGross" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FurnitureAndEquipmentGross" xml:lang="en-US" id="label_FurnitureAndEquipmentGross">Furniture and Equipment, Gross</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FurnitureAndEquipmentGross" xlink:to="label_FurnitureAndEquipmentGross" xlink:title="label: FurnitureAndEquipmentGross to label_FurnitureAndEquipmentGross"/>
    <label xlink:type="resource" xlink:label="label_FurnitureAndEquipmentGross_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_FurnitureAndEquipmentGross" xml:lang="en-US" id="label_FurnitureAndEquipmentGross_2">This element represents the gross carrying amount of furniture and equipments, as of the balance sheet date.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FurnitureAndEquipmentGross" xlink:to="label_FurnitureAndEquipmentGross_2" xlink:title="label: FurnitureAndEquipmentGross to label_FurnitureAndEquipmentGross"/>
    <label xlink:type="resource" xlink:label="label_FurnitureAndEquipmentGross_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FurnitureAndEquipmentGross" xml:lang="en-US" id="label_FurnitureAndEquipmentGross_3">Furniture and equipment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FurnitureAndEquipmentGross" xlink:to="label_FurnitureAndEquipmentGross_3" xlink:title="label: FurnitureAndEquipmentGross to label_FurnitureAndEquipmentGross"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ComputersGross" xlink:label="ComputersGross" xlink:title="ComputersGross"/>
    <label xlink:type="resource" xlink:label="label_ComputersGross" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ComputersGross" xml:lang="en-US" id="label_ComputersGross">Computers, Gross</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ComputersGross" xlink:to="label_ComputersGross" xlink:title="label: ComputersGross to label_ComputersGross"/>
    <label xlink:type="resource" xlink:label="label_ComputersGross_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ComputersGross" xml:lang="en-US" id="label_ComputersGross_2">Computers</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ComputersGross" xlink:to="label_ComputersGross_2" xlink:title="label: ComputersGross to label_ComputersGross"/>
    <label xlink:type="resource" xlink:label="label_ComputersGross_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ComputersGross" xml:lang="en-US" id="label_ComputersGross_3">This element represents the gross carrying amount of computers, as of the balance sheet date.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ComputersGross" xlink:to="label_ComputersGross_3" xlink:title="label: ComputersGross to label_ComputersGross"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_February2008EquityOfferingMember" xlink:label="February2008EquityOfferingMember" xlink:title="February2008EquityOfferingMember"/>
    <label xlink:type="resource" xlink:label="label_February2008EquityOfferingMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_February2008EquityOfferingMember" xml:lang="en-US" id="label_February2008EquityOfferingMember">An offering of the common stock of the entity which was completed in February 2008.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="February2008EquityOfferingMember" xlink:to="label_February2008EquityOfferingMember" xlink:title="label: February2008EquityOfferingMember to label_February2008EquityOfferingMember"/>
    <label xlink:type="resource" xlink:label="label_February2008EquityOfferingMember_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_February2008EquityOfferingMember" xml:lang="en-US" id="label_February2008EquityOfferingMember_2">February 2008 Equity Offering</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="February2008EquityOfferingMember" xlink:to="label_February2008EquityOfferingMember_2" xlink:title="label: February2008EquityOfferingMember to label_February2008EquityOfferingMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_September2008EquityOfferingMember" xlink:label="September2008EquityOfferingMember" xlink:title="September2008EquityOfferingMember"/>
    <label xlink:type="resource" xlink:label="label_September2008EquityOfferingMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_September2008EquityOfferingMember" xml:lang="en-US" id="label_September2008EquityOfferingMember">September 2008 Equity Offering</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="September2008EquityOfferingMember" xlink:to="label_September2008EquityOfferingMember" xlink:title="label: September2008EquityOfferingMember to label_September2008EquityOfferingMember"/>
    <label xlink:type="resource" xlink:label="label_September2008EquityOfferingMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_September2008EquityOfferingMember" xml:lang="en-US" id="label_September2008EquityOfferingMember_2">An offering of the common stock of the entity which was completed in September 2008.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="September2008EquityOfferingMember" xlink:to="label_September2008EquityOfferingMember_2" xlink:title="label: September2008EquityOfferingMember to label_September2008EquityOfferingMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CysticFibrosisFoundationTherapeuticsIncorporatedAgreementMember" xlink:label="CysticFibrosisFoundationTherapeuticsIncorporatedAgreementMember" xlink:title="CysticFibrosisFoundationTherapeuticsIncorporatedAgreementMember"/>
    <label xlink:type="resource" xlink:label="label_CysticFibrosisFoundationTherapeuticsIncorporatedAgreementMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CysticFibrosisFoundationTherapeuticsIncorporatedAgreementMember" xml:lang="en-US" id="label_CysticFibrosisFoundationTherapeuticsIncorporatedAgreementMember">Collaboration agreement entered into with Cystic Fibrosis Foundation Therapeutics Inc., for the development, manufacture and commercialization of a product of the entity.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CysticFibrosisFoundationTherapeuticsIncorporatedAgreementMember" xlink:to="label_CysticFibrosisFoundationTherapeuticsIncorporatedAgreementMember" xlink:title="label: CysticFibrosisFoundationTherapeuticsIncorporatedAgreementMember to label_CysticFibrosisFoundationTherapeuticsIncorporatedAgreementMember"/>
    <label xlink:type="resource" xlink:label="label_CysticFibrosisFoundationTherapeuticsIncorporatedAgreementMember_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CysticFibrosisFoundationTherapeuticsIncorporatedAgreementMember" xml:lang="en-US" id="label_CysticFibrosisFoundationTherapeuticsIncorporatedAgreementMember_2">Cystic Fibrosis Foundation Therapeutics Incorporated</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CysticFibrosisFoundationTherapeuticsIncorporatedAgreementMember" xlink:to="label_CysticFibrosisFoundationTherapeuticsIncorporatedAgreementMember_2" xlink:title="label: CysticFibrosisFoundationTherapeuticsIncorporatedAgreementMember to label_CysticFibrosisFoundationTherapeuticsIncorporatedAgreementMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_MerckAndCompanyIncAgreementMember" xlink:label="MerckAndCompanyIncAgreementMember" xlink:title="MerckAndCompanyIncAgreementMember"/>
    <label xlink:type="resource" xlink:label="label_MerckAndCompanyIncAgreementMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_MerckAndCompanyIncAgreementMember" xml:lang="en-US" id="label_MerckAndCompanyIncAgreementMember">Collaboration agreement entered into with Merck and Co. Inc., for the development, manufacture and commercialization of a product of the entity.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MerckAndCompanyIncAgreementMember" xlink:to="label_MerckAndCompanyIncAgreementMember" xlink:title="label: MerckAndCompanyIncAgreementMember to label_MerckAndCompanyIncAgreementMember"/>
    <label xlink:type="resource" xlink:label="label_MerckAndCompanyIncAgreementMember_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MerckAndCompanyIncAgreementMember" xml:lang="en-US" id="label_MerckAndCompanyIncAgreementMember_2">Merck and Co., Inc</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MerckAndCompanyIncAgreementMember" xlink:to="label_MerckAndCompanyIncAgreementMember_2" xlink:title="label: MerckAndCompanyIncAgreementMember to label_MerckAndCompanyIncAgreementMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementResearchFunding" xlink:label="CollaborativeArrangementResearchFunding" xlink:title="CollaborativeArrangementResearchFunding"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementResearchFunding" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaborativeArrangementResearchFunding" xml:lang="en-US" id="label_CollaborativeArrangementResearchFunding">Collaborative Arrangement Research Funding</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementResearchFunding" xlink:to="label_CollaborativeArrangementResearchFunding" xlink:title="label: CollaborativeArrangementResearchFunding to label_CollaborativeArrangementResearchFunding"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementResearchFunding_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaborativeArrangementResearchFunding" xml:lang="en-US" id="label_CollaborativeArrangementResearchFunding_2">This element represents the funding under collaborative agreement for research.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementResearchFunding" xlink:to="label_CollaborativeArrangementResearchFunding_2" xlink:title="label: CollaborativeArrangementResearchFunding to label_CollaborativeArrangementResearchFunding"/>
    <label xlink:type="resource" xlink:label="label_CollaborativeArrangementResearchFunding_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CollaborativeArrangementResearchFunding" xml:lang="en-US" id="label_CollaborativeArrangementResearchFunding_3">Research funding</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaborativeArrangementResearchFunding" xlink:to="label_CollaborativeArrangementResearchFunding_3" xlink:title="label: CollaborativeArrangementResearchFunding to label_CollaborativeArrangementResearchFunding"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_NumberOfYearsOverWhichResearchFundingWillBeMade" xlink:label="NumberOfYearsOverWhichResearchFundingWillBeMade" xlink:title="NumberOfYearsOverWhichResearchFundingWillBeMade"/>
    <label xlink:type="resource" xlink:label="label_NumberOfYearsOverWhichResearchFundingWillBeMade" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NumberOfYearsOverWhichResearchFundingWillBeMade" xml:lang="en-US" id="label_NumberOfYearsOverWhichResearchFundingWillBeMade">Number of Years over which Research Funding will be Made</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfYearsOverWhichResearchFundingWillBeMade" xlink:to="label_NumberOfYearsOverWhichResearchFundingWillBeMade" xlink:title="label: NumberOfYearsOverWhichResearchFundingWillBeMade to label_NumberOfYearsOverWhichResearchFundingWillBeMade"/>
    <label xlink:type="resource" xlink:label="label_NumberOfYearsOverWhichResearchFundingWillBeMade_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NumberOfYearsOverWhichResearchFundingWillBeMade" xml:lang="en-US" id="label_NumberOfYearsOverWhichResearchFundingWillBeMade_2">Number of years over which research funding will be made (in years)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfYearsOverWhichResearchFundingWillBeMade" xlink:to="label_NumberOfYearsOverWhichResearchFundingWillBeMade_2" xlink:title="label: NumberOfYearsOverWhichResearchFundingWillBeMade to label_NumberOfYearsOverWhichResearchFundingWillBeMade"/>
    <label xlink:type="resource" xlink:label="label_NumberOfYearsOverWhichResearchFundingWillBeMade_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_NumberOfYearsOverWhichResearchFundingWillBeMade" xml:lang="en-US" id="label_NumberOfYearsOverWhichResearchFundingWillBeMade_3">This element represents the number of years over which research funding will be made as per the collaboration agreement.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfYearsOverWhichResearchFundingWillBeMade" xlink:to="label_NumberOfYearsOverWhichResearchFundingWillBeMade_3" xlink:title="label: NumberOfYearsOverWhichResearchFundingWillBeMade to label_NumberOfYearsOverWhichResearchFundingWillBeMade"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xlink:label="ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xlink:title="ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xml:lang="en-US" id="label_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock">Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xlink:to="label_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xlink:title="label: ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock to label_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xml:lang="en-US" id="label_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_2">Fair values of assets acquired and liabilities assumed at the acquisition date</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xlink:to="label_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_2" xlink:title="label: ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock to label_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xml:lang="en-US" id="label_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_3">Disclosure of the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed. May include but not limited to the following: (a) acquired receivables; (b) contingencies recognized at the acquisition date; and (c) the fair value of noncontrolling interests in the acquiree.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xlink:to="label_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_3" xlink:title="label: ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock to label_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfFairValueOfConsiderationTableTextBlock" xlink:label="ScheduleOfFairValueOfConsiderationTableTextBlock" xlink:title="ScheduleOfFairValueOfConsiderationTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfFairValueOfConsiderationTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfFairValueOfConsiderationTableTextBlock" xml:lang="en-US" id="label_ScheduleOfFairValueOfConsiderationTableTextBlock">Schedule of Fair Value of Consideration [Table Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfFairValueOfConsiderationTableTextBlock" xlink:to="label_ScheduleOfFairValueOfConsiderationTableTextBlock" xlink:title="label: ScheduleOfFairValueOfConsiderationTableTextBlock to label_ScheduleOfFairValueOfConsiderationTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfFairValueOfConsiderationTableTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfFairValueOfConsiderationTableTextBlock" xml:lang="en-US" id="label_ScheduleOfFairValueOfConsiderationTableTextBlock_2">Disclosure of acquisition-date fair value of the consideration.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfFairValueOfConsiderationTableTextBlock" xlink:to="label_ScheduleOfFairValueOfConsiderationTableTextBlock_2" xlink:title="label: ScheduleOfFairValueOfConsiderationTableTextBlock to label_ScheduleOfFairValueOfConsiderationTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfFairValueOfConsiderationTableTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfFairValueOfConsiderationTableTextBlock" xml:lang="en-US" id="label_ScheduleOfFairValueOfConsiderationTableTextBlock_3">Acquisition-date fair value of the consideration</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfFairValueOfConsiderationTableTextBlock" xlink:to="label_ScheduleOfFairValueOfConsiderationTableTextBlock_3" xlink:title="label: ScheduleOfFairValueOfConsiderationTableTextBlock to label_ScheduleOfFairValueOfConsiderationTableTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CommonStockOpeningPriceValuePerShare" xlink:label="CommonStockOpeningPriceValuePerShare" xlink:title="CommonStockOpeningPriceValuePerShare"/>
    <label xlink:type="resource" xlink:label="label_CommonStockOpeningPriceValuePerShare" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CommonStockOpeningPriceValuePerShare" xml:lang="en-US" id="label_CommonStockOpeningPriceValuePerShare">Common Stock Opening Price, Value Per Share</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockOpeningPriceValuePerShare" xlink:to="label_CommonStockOpeningPriceValuePerShare" xlink:title="label: CommonStockOpeningPriceValuePerShare to label_CommonStockOpeningPriceValuePerShare"/>
    <label xlink:type="resource" xlink:label="label_CommonStockOpeningPriceValuePerShare_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CommonStockOpeningPriceValuePerShare" xml:lang="en-US" id="label_CommonStockOpeningPriceValuePerShare_2">Opening price of common stock (in dollars per share)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockOpeningPriceValuePerShare" xlink:to="label_CommonStockOpeningPriceValuePerShare_2" xlink:title="label: CommonStockOpeningPriceValuePerShare to label_CommonStockOpeningPriceValuePerShare"/>
    <label xlink:type="resource" xlink:label="label_CommonStockOpeningPriceValuePerShare_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CommonStockOpeningPriceValuePerShare" xml:lang="en-US" id="label_CommonStockOpeningPriceValuePerShare_3">Represents the opening price per share of the common stock.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockOpeningPriceValuePerShare" xlink:to="label_CommonStockOpeningPriceValuePerShare_3" xlink:title="label: CommonStockOpeningPriceValuePerShare to label_CommonStockOpeningPriceValuePerShare"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceAbstract" xlink:label="BusinessAcquisitionCostOfAcquiredEntityPurchasePriceAbstract" xlink:title="BusinessAcquisitionCostOfAcquiredEntityPurchasePriceAbstract"/>
    <label xlink:type="resource" xlink:label="label_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceAbstract" xml:lang="en-US" id="label_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceAbstract_2">Business Acquisition, Cost of Acquired Entity, Purchase Price [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionCostOfAcquiredEntityPurchasePriceAbstract" xlink:to="label_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceAbstract_2" xlink:title="label: BusinessAcquisitionCostOfAcquiredEntityPurchasePriceAbstract to label_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceAbstract"/>
    <label xlink:type="resource" xlink:label="label_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceAbstract" xml:lang="en-US" id="label_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceAbstract">Acquisition-date fair value of the consideration</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionCostOfAcquiredEntityPurchasePriceAbstract" xlink:to="label_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceAbstract" xlink:title="label: BusinessAcquisitionCostOfAcquiredEntityPurchasePriceAbstract to label_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceAbstract"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_BusinessAcquisitionPurchasePriceAllocationAbstract" xlink:label="BusinessAcquisitionPurchasePriceAllocationAbstract" xlink:title="BusinessAcquisitionPurchasePriceAllocationAbstract"/>
    <label xlink:type="resource" xlink:label="label_BusinessAcquisitionPurchasePriceAllocationAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BusinessAcquisitionPurchasePriceAllocationAbstract" xml:lang="en-US" id="label_BusinessAcquisitionPurchasePriceAllocationAbstract_2">Business Acquisition, Purchase Price Allocation [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionPurchasePriceAllocationAbstract" xlink:to="label_BusinessAcquisitionPurchasePriceAllocationAbstract_2" xlink:title="label: BusinessAcquisitionPurchasePriceAllocationAbstract to label_BusinessAcquisitionPurchasePriceAllocationAbstract"/>
    <label xlink:type="resource" xlink:label="label_BusinessAcquisitionPurchasePriceAllocationAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_BusinessAcquisitionPurchasePriceAllocationAbstract" xml:lang="en-US" id="label_BusinessAcquisitionPurchasePriceAllocationAbstract">Allocations of Assets and Liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionPurchasePriceAllocationAbstract" xlink:to="label_BusinessAcquisitionPurchasePriceAllocationAbstract" xlink:title="label: BusinessAcquisitionPurchasePriceAllocationAbstract to label_BusinessAcquisitionPurchasePriceAllocationAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_BusinessAcquisitionPurchasePriceAllocationIntangibleAssets" xlink:label="BusinessAcquisitionPurchasePriceAllocationIntangibleAssets" xlink:title="BusinessAcquisitionPurchasePriceAllocationIntangibleAssets"/>
    <label xlink:type="resource" xlink:label="label_BusinessAcquisitionPurchasePriceAllocationIntangibleAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BusinessAcquisitionPurchasePriceAllocationIntangibleAssets" xml:lang="en-US" id="label_BusinessAcquisitionPurchasePriceAllocationIntangibleAssets">Business Acquisition, Purchase Price Allocation, Intangible Assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionPurchasePriceAllocationIntangibleAssets" xlink:to="label_BusinessAcquisitionPurchasePriceAllocationIntangibleAssets" xlink:title="label: BusinessAcquisitionPurchasePriceAllocationIntangibleAssets to label_BusinessAcquisitionPurchasePriceAllocationIntangibleAssets"/>
    <label xlink:type="resource" xlink:label="label_BusinessAcquisitionPurchasePriceAllocationIntangibleAssets_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_BusinessAcquisitionPurchasePriceAllocationIntangibleAssets" xml:lang="en-US" id="label_BusinessAcquisitionPurchasePriceAllocationIntangibleAssets_2">The acquisition cost of a business combination allocated to an identifiable intangible asset.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionPurchasePriceAllocationIntangibleAssets" xlink:to="label_BusinessAcquisitionPurchasePriceAllocationIntangibleAssets_2" xlink:title="label: BusinessAcquisitionPurchasePriceAllocationIntangibleAssets to label_BusinessAcquisitionPurchasePriceAllocationIntangibleAssets"/>
    <label xlink:type="resource" xlink:label="label_BusinessAcquisitionPurchasePriceAllocationIntangibleAssets_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_BusinessAcquisitionPurchasePriceAllocationIntangibleAssets" xml:lang="en-US" id="label_BusinessAcquisitionPurchasePriceAllocationIntangibleAssets_3">Intangible assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionPurchasePriceAllocationIntangibleAssets" xlink:to="label_BusinessAcquisitionPurchasePriceAllocationIntangibleAssets_3" xlink:title="label: BusinessAcquisitionPurchasePriceAllocationIntangibleAssets to label_BusinessAcquisitionPurchasePriceAllocationIntangibleAssets"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_BusinessAcquisitionPurchasePriceAllocationOtherTangibleAssets" xlink:label="BusinessAcquisitionPurchasePriceAllocationOtherTangibleAssets" xlink:title="BusinessAcquisitionPurchasePriceAllocationOtherTangibleAssets"/>
    <label xlink:type="resource" xlink:label="label_BusinessAcquisitionPurchasePriceAllocationOtherTangibleAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BusinessAcquisitionPurchasePriceAllocationOtherTangibleAssets" xml:lang="en-US" id="label_BusinessAcquisitionPurchasePriceAllocationOtherTangibleAssets">Business Acquisition, Purchase Price Allocation, Other Tangible Assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionPurchasePriceAllocationOtherTangibleAssets" xlink:to="label_BusinessAcquisitionPurchasePriceAllocationOtherTangibleAssets" xlink:title="label: BusinessAcquisitionPurchasePriceAllocationOtherTangibleAssets to label_BusinessAcquisitionPurchasePriceAllocationOtherTangibleAssets"/>
    <label xlink:type="resource" xlink:label="label_BusinessAcquisitionPurchasePriceAllocationOtherTangibleAssets_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_BusinessAcquisitionPurchasePriceAllocationOtherTangibleAssets" xml:lang="en-US" id="label_BusinessAcquisitionPurchasePriceAllocationOtherTangibleAssets_2">The acquisition cost of a business combination allocated to other tangible assets of the acquired entity.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionPurchasePriceAllocationOtherTangibleAssets" xlink:to="label_BusinessAcquisitionPurchasePriceAllocationOtherTangibleAssets_2" xlink:title="label: BusinessAcquisitionPurchasePriceAllocationOtherTangibleAssets to label_BusinessAcquisitionPurchasePriceAllocationOtherTangibleAssets"/>
    <label xlink:type="resource" xlink:label="label_BusinessAcquisitionPurchasePriceAllocationOtherTangibleAssets_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_BusinessAcquisitionPurchasePriceAllocationOtherTangibleAssets" xml:lang="en-US" id="label_BusinessAcquisitionPurchasePriceAllocationOtherTangibleAssets_3">Other tangible assets</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionPurchasePriceAllocationOtherTangibleAssets" xlink:to="label_BusinessAcquisitionPurchasePriceAllocationOtherTangibleAssets_3" xlink:title="label: BusinessAcquisitionPurchasePriceAllocationOtherTangibleAssets to label_BusinessAcquisitionPurchasePriceAllocationOtherTangibleAssets"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_BusinessAcquisitionPurchasePriceAllocationLiabilitiesAccountsPayableAndAccruedExpenses" xlink:label="BusinessAcquisitionPurchasePriceAllocationLiabilitiesAccountsPayableAndAccruedExpenses" xlink:title="BusinessAcquisitionPurchasePriceAllocationLiabilitiesAccountsPayableAndAccruedExpenses"/>
    <label xlink:type="resource" xlink:label="label_BusinessAcquisitionPurchasePriceAllocationLiabilitiesAccountsPayableAndAccruedExpenses" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BusinessAcquisitionPurchasePriceAllocationLiabilitiesAccountsPayableAndAccruedExpenses" xml:lang="en-US" id="label_BusinessAcquisitionPurchasePriceAllocationLiabilitiesAccountsPayableAndAccruedExpenses">Business Acquisition, Purchase Price Allocation, Liabilities, Accounts Payable, and Accrued Expenses</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionPurchasePriceAllocationLiabilitiesAccountsPayableAndAccruedExpenses" xlink:to="label_BusinessAcquisitionPurchasePriceAllocationLiabilitiesAccountsPayableAndAccruedExpenses" xlink:title="label: BusinessAcquisitionPurchasePriceAllocationLiabilitiesAccountsPayableAndAccruedExpenses to label_BusinessAcquisitionPurchasePriceAllocationLiabilitiesAccountsPayableAndAccruedExpenses"/>
    <label xlink:type="resource" xlink:label="label_BusinessAcquisitionPurchasePriceAllocationLiabilitiesAccountsPayableAndAccruedExpenses_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_BusinessAcquisitionPurchasePriceAllocationLiabilitiesAccountsPayableAndAccruedExpenses" xml:lang="en-US" id="label_BusinessAcquisitionPurchasePriceAllocationLiabilitiesAccountsPayableAndAccruedExpenses_2">The acquisition cost of a business combination allocated to accounts payable and accrued expenses of the acquired entity.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionPurchasePriceAllocationLiabilitiesAccountsPayableAndAccruedExpenses" xlink:to="label_BusinessAcquisitionPurchasePriceAllocationLiabilitiesAccountsPayableAndAccruedExpenses_2" xlink:title="label: BusinessAcquisitionPurchasePriceAllocationLiabilitiesAccountsPayableAndAccruedExpenses to label_BusinessAcquisitionPurchasePriceAllocationLiabilitiesAccountsPayableAndAccruedExpenses"/>
    <label xlink:type="resource" xlink:label="label_BusinessAcquisitionPurchasePriceAllocationLiabilitiesAccountsPayableAndAccruedExpenses_3" xlink:role="http://xbrl.us/us-gaap/role/label/negated" xlink:title="label_BusinessAcquisitionPurchasePriceAllocationLiabilitiesAccountsPayableAndAccruedExpenses" xml:lang="en-US" id="label_BusinessAcquisitionPurchasePriceAllocationLiabilitiesAccountsPayableAndAccruedExpenses_3">Accounts payable and accrued expenses</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionPurchasePriceAllocationLiabilitiesAccountsPayableAndAccruedExpenses" xlink:to="label_BusinessAcquisitionPurchasePriceAllocationLiabilitiesAccountsPayableAndAccruedExpenses_3" xlink:title="label: BusinessAcquisitionPurchasePriceAllocationLiabilitiesAccountsPayableAndAccruedExpenses to label_BusinessAcquisitionPurchasePriceAllocationLiabilitiesAccountsPayableAndAccruedExpenses"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesDeferredTaxLiability" xlink:label="BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesDeferredTaxLiability" xlink:title="BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesDeferredTaxLiability"/>
    <label xlink:type="resource" xlink:label="label_BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesDeferredTaxLiability" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesDeferredTaxLiability" xml:lang="en-US" id="label_BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesDeferredTaxLiability">Business Acquisition, Purchase Price Allocation, Current Liabilities, Deferred Tax Liability</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesDeferredTaxLiability" xlink:to="label_BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesDeferredTaxLiability" xlink:title="label: BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesDeferredTaxLiability to label_BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesDeferredTaxLiability"/>
    <label xlink:type="resource" xlink:label="label_BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesDeferredTaxLiability_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesDeferredTaxLiability" xml:lang="en-US" id="label_BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesDeferredTaxLiability_2">The acquisition cost of a business combination allocated to deferred tax liability of the acquired entity.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesDeferredTaxLiability" xlink:to="label_BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesDeferredTaxLiability_2" xlink:title="label: BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesDeferredTaxLiability to label_BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesDeferredTaxLiability"/>
    <label xlink:type="resource" xlink:label="label_BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesDeferredTaxLiability_3" xlink:role="http://xbrl.us/us-gaap/role/label/negated" xlink:title="label_BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesDeferredTaxLiability" xml:lang="en-US" id="label_BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesDeferredTaxLiability_3">Deferred tax liability</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesDeferredTaxLiability" xlink:to="label_BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesDeferredTaxLiability_3" xlink:title="label: BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesDeferredTaxLiability to label_BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesDeferredTaxLiability"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_VX286Member" xlink:label="VX286Member" xlink:title="VX286Member"/>
    <label xlink:type="resource" xlink:label="label_VX286Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_VX286Member" xml:lang="en-US" id="label_VX286Member">VX-286</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VX286Member" xlink:to="label_VX286Member" xlink:title="label: VX286Member to label_VX286Member"/>
    <label xlink:type="resource" xlink:label="label_VX286Member_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_VX286Member" xml:lang="en-US" id="label_VX286Member_2">VX-286, a clinical-development stage HCV polymerase inhibitor acquired.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VX286Member" xlink:to="label_VX286Member_2" xlink:title="label: VX286Member to label_VX286Member"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfMatchingContributionUnderRetirementPlanTableTextBlock" xlink:label="ScheduleOfMatchingContributionUnderRetirementPlanTableTextBlock" xlink:title="ScheduleOfMatchingContributionUnderRetirementPlanTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfMatchingContributionUnderRetirementPlanTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfMatchingContributionUnderRetirementPlanTableTextBlock" xml:lang="en-US" id="label_ScheduleOfMatchingContributionUnderRetirementPlanTableTextBlock">Schedule of Matching Contribution under Retirement Plan [Table Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfMatchingContributionUnderRetirementPlanTableTextBlock" xlink:to="label_ScheduleOfMatchingContributionUnderRetirementPlanTableTextBlock" xlink:title="label: ScheduleOfMatchingContributionUnderRetirementPlanTableTextBlock to label_ScheduleOfMatchingContributionUnderRetirementPlanTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfMatchingContributionUnderRetirementPlanTableTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfMatchingContributionUnderRetirementPlanTableTextBlock" xml:lang="en-US" id="label_ScheduleOfMatchingContributionUnderRetirementPlanTableTextBlock_2">Disclosure of matching contributions to the retirement plan.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfMatchingContributionUnderRetirementPlanTableTextBlock" xlink:to="label_ScheduleOfMatchingContributionUnderRetirementPlanTableTextBlock_2" xlink:title="label: ScheduleOfMatchingContributionUnderRetirementPlanTableTextBlock to label_ScheduleOfMatchingContributionUnderRetirementPlanTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfMatchingContributionUnderRetirementPlanTableTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfMatchingContributionUnderRetirementPlanTableTextBlock" xml:lang="en-US" id="label_ScheduleOfMatchingContributionUnderRetirementPlanTableTextBlock_3">Matching contributions to the Vertex 401(k) Plan</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfMatchingContributionUnderRetirementPlanTableTextBlock" xlink:to="label_ScheduleOfMatchingContributionUnderRetirementPlanTableTextBlock_3" xlink:title="label: ScheduleOfMatchingContributionUnderRetirementPlanTableTextBlock to label_ScheduleOfMatchingContributionUnderRetirementPlanTableTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_MaximumDefinedContributionPlanEmployeeContributionPercentageOfCompensation" xlink:label="MaximumDefinedContributionPlanEmployeeContributionPercentageOfCompensation" xlink:title="MaximumDefinedContributionPlanEmployeeContributionPercentageOfCompensation"/>
    <label xlink:type="resource" xlink:label="label_MaximumDefinedContributionPlanEmployeeContributionPercentageOfCompensation" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MaximumDefinedContributionPlanEmployeeContributionPercentageOfCompensation" xml:lang="en-US" id="label_MaximumDefinedContributionPlanEmployeeContributionPercentageOfCompensation">Maximum Defined Contribution Plan, Employee Contribution, Percentage of Compensation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MaximumDefinedContributionPlanEmployeeContributionPercentageOfCompensation" xlink:to="label_MaximumDefinedContributionPlanEmployeeContributionPercentageOfCompensation" xlink:title="label: MaximumDefinedContributionPlanEmployeeContributionPercentageOfCompensation to label_MaximumDefinedContributionPlanEmployeeContributionPercentageOfCompensation"/>
    <label xlink:type="resource" xlink:label="label_MaximumDefinedContributionPlanEmployeeContributionPercentageOfCompensation_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_MaximumDefinedContributionPlanEmployeeContributionPercentageOfCompensation" xml:lang="en-US" id="label_MaximumDefinedContributionPlanEmployeeContributionPercentageOfCompensation_2">The maximum percentage of compensation that can be contributed by employees into the 401(k) retirement plan.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MaximumDefinedContributionPlanEmployeeContributionPercentageOfCompensation" xlink:to="label_MaximumDefinedContributionPlanEmployeeContributionPercentageOfCompensation_2" xlink:title="label: MaximumDefinedContributionPlanEmployeeContributionPercentageOfCompensation to label_MaximumDefinedContributionPlanEmployeeContributionPercentageOfCompensation"/>
    <label xlink:type="resource" xlink:label="label_MaximumDefinedContributionPlanEmployeeContributionPercentageOfCompensation_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_MaximumDefinedContributionPlanEmployeeContributionPercentageOfCompensation" xml:lang="en-US" id="label_MaximumDefinedContributionPlanEmployeeContributionPercentageOfCompensation_3">Maximum percentage of annual compensation contributed by the participant (as a percent)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MaximumDefinedContributionPlanEmployeeContributionPercentageOfCompensation" xlink:to="label_MaximumDefinedContributionPlanEmployeeContributionPercentageOfCompensation_3" xlink:title="label: MaximumDefinedContributionPlanEmployeeContributionPercentageOfCompensation to label_MaximumDefinedContributionPlanEmployeeContributionPercentageOfCompensation"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract" xlink:label="DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract" xlink:title="DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract" xml:lang="en-US" id="label_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract_2">Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract" xlink:to="label_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract_2" xlink:title="label: DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract to label_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract" xml:lang="en-US" id="label_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract">Matching contributions to the Vertex 401(k) Plan:</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract" xlink:to="label_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract" xlink:title="label: DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract to label_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_VCH286Member" xlink:label="VCH286Member" xlink:title="VCH286Member"/>
    <label xlink:type="resource" xlink:label="label_VCH286Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_VCH286Member" xml:lang="en-US" id="label_VCH286Member">VCH-286</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VCH286Member" xlink:to="label_VCH286Member" xlink:title="label: VCH286Member to label_VCH286Member"/>
    <label xlink:type="resource" xlink:label="label_VCH286Member_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_VCH286Member" xml:lang="en-US" id="label_VCH286Member_2">VCH-286, a clinical-development stage HCV polymerase inhibitor acquired.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VCH286Member" xlink:to="label_VCH286Member_2" xlink:title="label: VCH286Member to label_VCH286Member"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesNetOfEstimatedSubleaseIncomeTableTextBlock" xlink:label="ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesNetOfEstimatedSubleaseIncomeTableTextBlock" xlink:title="ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesNetOfEstimatedSubleaseIncomeTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesNetOfEstimatedSubleaseIncomeTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesNetOfEstimatedSubleaseIncomeTableTextBlock" xml:lang="en-US" id="label_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesNetOfEstimatedSubleaseIncomeTableTextBlock">Schedule of Future Minimum Rental Payments for Operating Leases Net of Estimated Sublease Income [Table Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesNetOfEstimatedSubleaseIncomeTableTextBlock" xlink:to="label_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesNetOfEstimatedSubleaseIncomeTableTextBlock" xlink:title="label: ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesNetOfEstimatedSubleaseIncomeTableTextBlock to label_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesNetOfEstimatedSubleaseIncomeTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesNetOfEstimatedSubleaseIncomeTableTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesNetOfEstimatedSubleaseIncomeTableTextBlock" xml:lang="en-US" id="label_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesNetOfEstimatedSubleaseIncomeTableTextBlock_2">For operating leases having initial or remaining lease terms of more than one year, the future minimum payments required as of the date of the latest balance sheet presented, in the aggregate and for each of the five succeeding fiscal years. Also includes a disclosure of the total minimum sublease rentals to be received, in the aggregate and for each of the five succeeding fiscal years, under noncancelable subleases as of the date of the latest balance sheet presented.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesNetOfEstimatedSubleaseIncomeTableTextBlock" xlink:to="label_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesNetOfEstimatedSubleaseIncomeTableTextBlock_2" xlink:title="label: ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesNetOfEstimatedSubleaseIncomeTableTextBlock to label_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesNetOfEstimatedSubleaseIncomeTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesNetOfEstimatedSubleaseIncomeTableTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesNetOfEstimatedSubleaseIncomeTableTextBlock" xml:lang="en-US" id="label_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesNetOfEstimatedSubleaseIncomeTableTextBlock_3">Future minimum commitments under facility operating leases with terms of more than one year, net of estimated sublease income</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesNetOfEstimatedSubleaseIncomeTableTextBlock" xlink:to="label_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesNetOfEstimatedSubleaseIncomeTableTextBlock_3" xlink:title="label: ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesNetOfEstimatedSubleaseIncomeTableTextBlock to label_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesNetOfEstimatedSubleaseIncomeTableTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_OtherOperatingLeasesMember" xlink:label="OtherOperatingLeasesMember" xlink:title="OtherOperatingLeasesMember"/>
    <label xlink:type="resource" xlink:label="label_OtherOperatingLeasesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OtherOperatingLeasesMember" xml:lang="en-US" id="label_OtherOperatingLeasesMember">Other Operating Leases</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherOperatingLeasesMember" xlink:to="label_OtherOperatingLeasesMember" xlink:title="label: OtherOperatingLeasesMember to label_OtherOperatingLeasesMember"/>
    <label xlink:type="resource" xlink:label="label_OtherOperatingLeasesMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_OtherOperatingLeasesMember" xml:lang="en-US" id="label_OtherOperatingLeasesMember_2">Represents the other operating leases.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherOperatingLeasesMember" xlink:to="label_OtherOperatingLeasesMember_2" xlink:title="label: OtherOperatingLeasesMember to label_OtherOperatingLeasesMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_NumberOfLeaseTermsToExtend" xlink:label="NumberOfLeaseTermsToExtend" xlink:title="NumberOfLeaseTermsToExtend"/>
    <label xlink:type="resource" xlink:label="label_NumberOfLeaseTermsToExtend" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NumberOfLeaseTermsToExtend" xml:lang="en-US" id="label_NumberOfLeaseTermsToExtend">Number of Lease Terms to Extend</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfLeaseTermsToExtend" xlink:to="label_NumberOfLeaseTermsToExtend" xlink:title="label: NumberOfLeaseTermsToExtend to label_NumberOfLeaseTermsToExtend"/>
    <label xlink:type="resource" xlink:label="label_NumberOfLeaseTermsToExtend_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_NumberOfLeaseTermsToExtend" xml:lang="en-US" id="label_NumberOfLeaseTermsToExtend_2">Represents the number of lease terms the entity has the option to extend on the Kendall Square Lease.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfLeaseTermsToExtend" xlink:to="label_NumberOfLeaseTermsToExtend_2" xlink:title="label: NumberOfLeaseTermsToExtend to label_NumberOfLeaseTermsToExtend"/>
    <label xlink:type="resource" xlink:label="label_NumberOfLeaseTermsToExtend_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NumberOfLeaseTermsToExtend" xml:lang="en-US" id="label_NumberOfLeaseTermsToExtend_3">Number of lease terms the entity has the option to extend</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfLeaseTermsToExtend" xlink:to="label_NumberOfLeaseTermsToExtend_3" xlink:title="label: NumberOfLeaseTermsToExtend to label_NumberOfLeaseTermsToExtend"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_TermOfExtensionOnOperatingLease" xlink:label="TermOfExtensionOnOperatingLease" xlink:title="TermOfExtensionOnOperatingLease"/>
    <label xlink:type="resource" xlink:label="label_TermOfExtensionOnOperatingLease" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_TermOfExtensionOnOperatingLease" xml:lang="en-US" id="label_TermOfExtensionOnOperatingLease">Term of Extension on Operating Lease</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TermOfExtensionOnOperatingLease" xlink:to="label_TermOfExtensionOnOperatingLease" xlink:title="label: TermOfExtensionOnOperatingLease to label_TermOfExtensionOnOperatingLease"/>
    <label xlink:type="resource" xlink:label="label_TermOfExtensionOnOperatingLease_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_TermOfExtensionOnOperatingLease" xml:lang="en-US" id="label_TermOfExtensionOnOperatingLease_2">Represents the length of each lease term the entity has the option to extend on the Kendall Square Lease.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TermOfExtensionOnOperatingLease" xlink:to="label_TermOfExtensionOnOperatingLease_2" xlink:title="label: TermOfExtensionOnOperatingLease to label_TermOfExtensionOnOperatingLease"/>
    <label xlink:type="resource" xlink:label="label_TermOfExtensionOnOperatingLease_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_TermOfExtensionOnOperatingLease" xml:lang="en-US" id="label_TermOfExtensionOnOperatingLease_3">Length of each lease term the entity has the option to extend</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TermOfExtensionOnOperatingLease" xlink:to="label_TermOfExtensionOnOperatingLease_3" xlink:title="label: TermOfExtensionOnOperatingLease to label_TermOfExtensionOnOperatingLease"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract" xlink:label="OperatingLeasesFutureMinimumPaymentsDueAbstract" xlink:title="OperatingLeasesFutureMinimumPaymentsDueAbstract"/>
    <label xlink:type="resource" xlink:label="label_OperatingLeasesFutureMinimumPaymentsDueAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLeasesFutureMinimumPaymentsDueAbstract" xml:lang="en-US" id="label_OperatingLeasesFutureMinimumPaymentsDueAbstract_2">Operating Leases, Future Minimum Payments Due [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeasesFutureMinimumPaymentsDueAbstract" xlink:to="label_OperatingLeasesFutureMinimumPaymentsDueAbstract_2" xlink:title="label: OperatingLeasesFutureMinimumPaymentsDueAbstract to label_OperatingLeasesFutureMinimumPaymentsDueAbstract"/>
    <label xlink:type="resource" xlink:label="label_OperatingLeasesFutureMinimumPaymentsDueAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OperatingLeasesFutureMinimumPaymentsDueAbstract" xml:lang="en-US" id="label_OperatingLeasesFutureMinimumPaymentsDueAbstract">Future minimum commitments under facility operating leases with terms of more than one year</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeasesFutureMinimumPaymentsDueAbstract" xlink:to="label_OperatingLeasesFutureMinimumPaymentsDueAbstract" xlink:title="label: OperatingLeasesFutureMinimumPaymentsDueAbstract to label_OperatingLeasesFutureMinimumPaymentsDueAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_FutureContractualCommitmentsRealizableWithinOneYear" xlink:label="FutureContractualCommitmentsRealizableWithinOneYear" xlink:title="FutureContractualCommitmentsRealizableWithinOneYear"/>
    <label xlink:type="resource" xlink:label="label_FutureContractualCommitmentsRealizableWithinOneYear" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FutureContractualCommitmentsRealizableWithinOneYear" xml:lang="en-US" id="label_FutureContractualCommitmentsRealizableWithinOneYear">Future Contractual Commitments Realizable within One Year</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FutureContractualCommitmentsRealizableWithinOneYear" xlink:to="label_FutureContractualCommitmentsRealizableWithinOneYear" xlink:title="label: FutureContractualCommitmentsRealizableWithinOneYear to label_FutureContractualCommitmentsRealizableWithinOneYear"/>
    <label xlink:type="resource" xlink:label="label_FutureContractualCommitmentsRealizableWithinOneYear_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_FutureContractualCommitmentsRealizableWithinOneYear" xml:lang="en-US" id="label_FutureContractualCommitmentsRealizableWithinOneYear_2">Represents the future contractual commitments in connection with its research, development and commercial supply investment for 2011.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FutureContractualCommitmentsRealizableWithinOneYear" xlink:to="label_FutureContractualCommitmentsRealizableWithinOneYear_2" xlink:title="label: FutureContractualCommitmentsRealizableWithinOneYear to label_FutureContractualCommitmentsRealizableWithinOneYear"/>
    <label xlink:type="resource" xlink:label="label_FutureContractualCommitmentsRealizableWithinOneYear_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FutureContractualCommitmentsRealizableWithinOneYear" xml:lang="en-US" id="label_FutureContractualCommitmentsRealizableWithinOneYear_3">Future contractual commitments in connection with its research, development and commercial supply investment for 2011</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FutureContractualCommitmentsRealizableWithinOneYear" xlink:to="label_FutureContractualCommitmentsRealizableWithinOneYear_3" xlink:title="label: FutureContractualCommitmentsRealizableWithinOneYear to label_FutureContractualCommitmentsRealizableWithinOneYear"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_FutureContractualCommitmentsRealizableWithinTwoYears" xlink:label="FutureContractualCommitmentsRealizableWithinTwoYears" xlink:title="FutureContractualCommitmentsRealizableWithinTwoYears"/>
    <label xlink:type="resource" xlink:label="label_FutureContractualCommitmentsRealizableWithinTwoYears" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FutureContractualCommitmentsRealizableWithinTwoYears" xml:lang="en-US" id="label_FutureContractualCommitmentsRealizableWithinTwoYears">Future Contractual Commitments Realizable within Two Years</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FutureContractualCommitmentsRealizableWithinTwoYears" xlink:to="label_FutureContractualCommitmentsRealizableWithinTwoYears" xlink:title="label: FutureContractualCommitmentsRealizableWithinTwoYears to label_FutureContractualCommitmentsRealizableWithinTwoYears"/>
    <label xlink:type="resource" xlink:label="label_FutureContractualCommitmentsRealizableWithinTwoYears_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_FutureContractualCommitmentsRealizableWithinTwoYears" xml:lang="en-US" id="label_FutureContractualCommitmentsRealizableWithinTwoYears_2">Represents the future contractual commitments in connection with its research, development and commercial supply investment for 2012.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FutureContractualCommitmentsRealizableWithinTwoYears" xlink:to="label_FutureContractualCommitmentsRealizableWithinTwoYears_2" xlink:title="label: FutureContractualCommitmentsRealizableWithinTwoYears to label_FutureContractualCommitmentsRealizableWithinTwoYears"/>
    <label xlink:type="resource" xlink:label="label_FutureContractualCommitmentsRealizableWithinTwoYears_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FutureContractualCommitmentsRealizableWithinTwoYears" xml:lang="en-US" id="label_FutureContractualCommitmentsRealizableWithinTwoYears_3">Future contractual commitments in connection with its research, development and commercial supply investment for 2012</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FutureContractualCommitmentsRealizableWithinTwoYears" xlink:to="label_FutureContractualCommitmentsRealizableWithinTwoYears_3" xlink:title="label: FutureContractualCommitmentsRealizableWithinTwoYears to label_FutureContractualCommitmentsRealizableWithinTwoYears"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CashCashEquivalentsAndMarketableSecurities" xlink:label="CashCashEquivalentsAndMarketableSecurities" xlink:title="CashCashEquivalentsAndMarketableSecurities"/>
    <label xlink:type="resource" xlink:label="label_CashCashEquivalentsAndMarketableSecurities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CashCashEquivalentsAndMarketableSecurities" xml:lang="en-US" id="label_CashCashEquivalentsAndMarketableSecurities">Cash, Cash Equivalents and Marketable Securities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashCashEquivalentsAndMarketableSecurities" xlink:to="label_CashCashEquivalentsAndMarketableSecurities" xlink:title="label: CashCashEquivalentsAndMarketableSecurities to label_CashCashEquivalentsAndMarketableSecurities"/>
    <label xlink:type="resource" xlink:label="label_CashCashEquivalentsAndMarketableSecurities_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CashCashEquivalentsAndMarketableSecurities" xml:lang="en-US" id="label_CashCashEquivalentsAndMarketableSecurities_2">Cash, cash equivalents and marketable securities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashCashEquivalentsAndMarketableSecurities" xlink:to="label_CashCashEquivalentsAndMarketableSecurities_2" xlink:title="label: CashCashEquivalentsAndMarketableSecurities to label_CashCashEquivalentsAndMarketableSecurities"/>
    <label xlink:type="resource" xlink:label="label_CashCashEquivalentsAndMarketableSecurities_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CashCashEquivalentsAndMarketableSecurities" xml:lang="en-US" id="label_CashCashEquivalentsAndMarketableSecurities_3">This element represents the carrying value as of the balance sheet date of cash, cash equivalents and marketable securities.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashCashEquivalentsAndMarketableSecurities" xlink:to="label_CashCashEquivalentsAndMarketableSecurities_3" xlink:title="label: CashCashEquivalentsAndMarketableSecurities to label_CashCashEquivalentsAndMarketableSecurities"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_GlaxoSmithKlineCollaborativeAgreementtMember" xlink:label="GlaxoSmithKlineCollaborativeAgreementtMember" xlink:title="GlaxoSmithKlineCollaborativeAgreementtMember"/>
    <label xlink:type="resource" xlink:label="label_GlaxoSmithKlineCollaborativeAgreementtMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_GlaxoSmithKlineCollaborativeAgreementtMember" xml:lang="en-US" id="label_GlaxoSmithKlineCollaborativeAgreementtMember">GlaxoSmithKline plc</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GlaxoSmithKlineCollaborativeAgreementtMember" xlink:to="label_GlaxoSmithKlineCollaborativeAgreementtMember" xlink:title="label: GlaxoSmithKlineCollaborativeAgreementtMember to label_GlaxoSmithKlineCollaborativeAgreementtMember"/>
    <label xlink:type="resource" xlink:label="label_GlaxoSmithKlineCollaborativeAgreementtMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_GlaxoSmithKlineCollaborativeAgreementtMember" xml:lang="en-US" id="label_GlaxoSmithKlineCollaborativeAgreementtMember_2">Collaboration agreement entered into with GlaxoSmithKline.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GlaxoSmithKlineCollaborativeAgreementtMember" xlink:to="label_GlaxoSmithKlineCollaborativeAgreementtMember_2" xlink:title="label: GlaxoSmithKlineCollaborativeAgreementtMember to label_GlaxoSmithKlineCollaborativeAgreementtMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_PercentageOfTotalRevenue" xlink:label="PercentageOfTotalRevenue" xlink:title="PercentageOfTotalRevenue"/>
    <label xlink:type="resource" xlink:label="label_PercentageOfTotalRevenue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PercentageOfTotalRevenue" xml:lang="en-US" id="label_PercentageOfTotalRevenue">Percentage of Total Revenue</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageOfTotalRevenue" xlink:to="label_PercentageOfTotalRevenue" xlink:title="label: PercentageOfTotalRevenue to label_PercentageOfTotalRevenue"/>
    <label xlink:type="resource" xlink:label="label_PercentageOfTotalRevenue_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_PercentageOfTotalRevenue" xml:lang="en-US" id="label_PercentageOfTotalRevenue_2">Represents percentage of total revenue attributable to collaborative arrangements.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageOfTotalRevenue" xlink:to="label_PercentageOfTotalRevenue_2" xlink:title="label: PercentageOfTotalRevenue to label_PercentageOfTotalRevenue"/>
    <label xlink:type="resource" xlink:label="label_PercentageOfTotalRevenue_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PercentageOfTotalRevenue" xml:lang="en-US" id="label_PercentageOfTotalRevenue_3">Percentage of total revenue (as a percent)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageOfTotalRevenue" xlink:to="label_PercentageOfTotalRevenue_3" xlink:title="label: PercentageOfTotalRevenue to label_PercentageOfTotalRevenue"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_PercentageOfAccountsReceivable" xlink:label="PercentageOfAccountsReceivable" xlink:title="PercentageOfAccountsReceivable"/>
    <label xlink:type="resource" xlink:label="label_PercentageOfAccountsReceivable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PercentageOfAccountsReceivable" xml:lang="en-US" id="label_PercentageOfAccountsReceivable">Percentage of Accounts Receivable</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageOfAccountsReceivable" xlink:to="label_PercentageOfAccountsReceivable" xlink:title="label: PercentageOfAccountsReceivable to label_PercentageOfAccountsReceivable"/>
    <label xlink:type="resource" xlink:label="label_PercentageOfAccountsReceivable_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PercentageOfAccountsReceivable" xml:lang="en-US" id="label_PercentageOfAccountsReceivable_2">Percentage of accounts receivable (as a percent)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageOfAccountsReceivable" xlink:to="label_PercentageOfAccountsReceivable_2" xlink:title="label: PercentageOfAccountsReceivable to label_PercentageOfAccountsReceivable"/>
    <label xlink:type="resource" xlink:label="label_PercentageOfAccountsReceivable_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_PercentageOfAccountsReceivable" xml:lang="en-US" id="label_PercentageOfAccountsReceivable_3">Represents percentage of accounts receivable attributable to collaborative arrangements.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageOfAccountsReceivable" xlink:to="label_PercentageOfAccountsReceivable_3" xlink:title="label: PercentageOfAccountsReceivable to label_PercentageOfAccountsReceivable"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CashAndCashEquivalentsAbstract" xlink:label="CashAndCashEquivalentsAbstract" xlink:title="CashAndCashEquivalentsAbstract"/>
    <label xlink:type="resource" xlink:label="label_CashAndCashEquivalentsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CashAndCashEquivalentsAbstract" xml:lang="en-US" id="label_CashAndCashEquivalentsAbstract">Cash and Cash Equivalents [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndCashEquivalentsAbstract" xlink:to="label_CashAndCashEquivalentsAbstract" xlink:title="label: CashAndCashEquivalentsAbstract to label_CashAndCashEquivalentsAbstract"/>
    <label xlink:type="resource" xlink:label="label_CashAndCashEquivalentsAbstract_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CashAndCashEquivalentsAbstract" xml:lang="en-US" id="label_CashAndCashEquivalentsAbstract_2">Cash and Cash Equivalents</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndCashEquivalentsAbstract" xlink:to="label_CashAndCashEquivalentsAbstract_2" xlink:title="label: CashAndCashEquivalentsAbstract to label_CashAndCashEquivalentsAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_MaximumMaturityPeriodAtTheDateOfPurchaseForCashEquivalents" xlink:label="MaximumMaturityPeriodAtTheDateOfPurchaseForCashEquivalents" xlink:title="MaximumMaturityPeriodAtTheDateOfPurchaseForCashEquivalents"/>
    <label xlink:type="resource" xlink:label="label_MaximumMaturityPeriodAtTheDateOfPurchaseForCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MaximumMaturityPeriodAtTheDateOfPurchaseForCashEquivalents" xml:lang="en-US" id="label_MaximumMaturityPeriodAtTheDateOfPurchaseForCashEquivalents">Maximum Maturity Period at the Date of Purchase for Cash Equivalents</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MaximumMaturityPeriodAtTheDateOfPurchaseForCashEquivalents" xlink:to="label_MaximumMaturityPeriodAtTheDateOfPurchaseForCashEquivalents" xlink:title="label: MaximumMaturityPeriodAtTheDateOfPurchaseForCashEquivalents to label_MaximumMaturityPeriodAtTheDateOfPurchaseForCashEquivalents"/>
    <label xlink:type="resource" xlink:label="label_MaximumMaturityPeriodAtTheDateOfPurchaseForCashEquivalents_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_MaximumMaturityPeriodAtTheDateOfPurchaseForCashEquivalents" xml:lang="en-US" id="label_MaximumMaturityPeriodAtTheDateOfPurchaseForCashEquivalents_2">Represents the maximum maturity period at the date of purchase for cash equivalents.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MaximumMaturityPeriodAtTheDateOfPurchaseForCashEquivalents" xlink:to="label_MaximumMaturityPeriodAtTheDateOfPurchaseForCashEquivalents_2" xlink:title="label: MaximumMaturityPeriodAtTheDateOfPurchaseForCashEquivalents to label_MaximumMaturityPeriodAtTheDateOfPurchaseForCashEquivalents"/>
    <label xlink:type="resource" xlink:label="label_MaximumMaturityPeriodAtTheDateOfPurchaseForCashEquivalents_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_MaximumMaturityPeriodAtTheDateOfPurchaseForCashEquivalents" xml:lang="en-US" id="label_MaximumMaturityPeriodAtTheDateOfPurchaseForCashEquivalents_3">Maximum maturity period at the date of purchase for cash equivalents (in months)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MaximumMaturityPeriodAtTheDateOfPurchaseForCashEquivalents" xlink:to="label_MaximumMaturityPeriodAtTheDateOfPurchaseForCashEquivalents_3" xlink:title="label: MaximumMaturityPeriodAtTheDateOfPurchaseForCashEquivalents to label_MaximumMaturityPeriodAtTheDateOfPurchaseForCashEquivalents"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_FurnitureAndEquipmentMember" xlink:label="FurnitureAndEquipmentMember" xlink:title="FurnitureAndEquipmentMember"/>
    <label xlink:type="resource" xlink:label="label_FurnitureAndEquipmentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FurnitureAndEquipmentMember" xml:lang="en-US" id="label_FurnitureAndEquipmentMember">Furniture and equipment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FurnitureAndEquipmentMember" xlink:to="label_FurnitureAndEquipmentMember" xlink:title="label: FurnitureAndEquipmentMember to label_FurnitureAndEquipmentMember"/>
    <label xlink:type="resource" xlink:label="label_FurnitureAndEquipmentMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_FurnitureAndEquipmentMember" xml:lang="en-US" id="label_FurnitureAndEquipmentMember_2">Represents furniture which is commonly used in offices and stores and equipment with finite lives used to produce goods and services.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FurnitureAndEquipmentMember" xlink:to="label_FurnitureAndEquipmentMember_2" xlink:title="label: FurnitureAndEquipmentMember to label_FurnitureAndEquipmentMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ComputersAndSoftwareMember" xlink:label="ComputersAndSoftwareMember" xlink:title="ComputersAndSoftwareMember"/>
    <label xlink:type="resource" xlink:label="label_ComputersAndSoftwareMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ComputersAndSoftwareMember" xml:lang="en-US" id="label_ComputersAndSoftwareMember">Computers and software</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ComputersAndSoftwareMember" xlink:to="label_ComputersAndSoftwareMember" xlink:title="label: ComputersAndSoftwareMember to label_ComputersAndSoftwareMember"/>
    <label xlink:type="resource" xlink:label="label_ComputersAndSoftwareMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ComputersAndSoftwareMember" xml:lang="en-US" id="label_ComputersAndSoftwareMember_2">Represents the computer and software used in business.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ComputersAndSoftwareMember" xlink:to="label_ComputersAndSoftwareMember_2" xlink:title="label: ComputersAndSoftwareMember to label_ComputersAndSoftwareMember"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ForeignCurrencyTranslationAbstract" xlink:label="ForeignCurrencyTranslationAbstract" xlink:title="ForeignCurrencyTranslationAbstract"/>
    <label xlink:type="resource" xlink:label="label_ForeignCurrencyTranslationAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ForeignCurrencyTranslationAbstract" xml:lang="en-US" id="label_ForeignCurrencyTranslationAbstract_2">Foreign Currency Translation [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ForeignCurrencyTranslationAbstract" xlink:to="label_ForeignCurrencyTranslationAbstract_2" xlink:title="label: ForeignCurrencyTranslationAbstract to label_ForeignCurrencyTranslationAbstract"/>
    <label xlink:type="resource" xlink:label="label_ForeignCurrencyTranslationAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ForeignCurrencyTranslationAbstract" xml:lang="en-US" id="label_ForeignCurrencyTranslationAbstract">Foreign Currency Translation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ForeignCurrencyTranslationAbstract" xlink:to="label_ForeignCurrencyTranslationAbstract" xlink:title="label: ForeignCurrencyTranslationAbstract to label_ForeignCurrencyTranslationAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ConcentrationOfCreditRiskPolicyTextBlock" xlink:label="ConcentrationOfCreditRiskPolicyTextBlock" xlink:title="ConcentrationOfCreditRiskPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ConcentrationOfCreditRiskPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ConcentrationOfCreditRiskPolicyTextBlock" xml:lang="en-US" id="label_ConcentrationOfCreditRiskPolicyTextBlock">Concentration of Credit Risk [Policy Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConcentrationOfCreditRiskPolicyTextBlock" xlink:to="label_ConcentrationOfCreditRiskPolicyTextBlock" xlink:title="label: ConcentrationOfCreditRiskPolicyTextBlock to label_ConcentrationOfCreditRiskPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ConcentrationOfCreditRiskPolicyTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ConcentrationOfCreditRiskPolicyTextBlock" xml:lang="en-US" id="label_ConcentrationOfCreditRiskPolicyTextBlock_2">Describes the method of accounting for financial instruments that potentially subject the entity to concentration of credit risk, and credit risk associated with collaborators.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConcentrationOfCreditRiskPolicyTextBlock" xlink:to="label_ConcentrationOfCreditRiskPolicyTextBlock_2" xlink:title="label: ConcentrationOfCreditRiskPolicyTextBlock to label_ConcentrationOfCreditRiskPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ConcentrationOfCreditRiskPolicyTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ConcentrationOfCreditRiskPolicyTextBlock" xml:lang="en-US" id="label_ConcentrationOfCreditRiskPolicyTextBlock_3">Concentration of Credit Risk</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConcentrationOfCreditRiskPolicyTextBlock" xlink:to="label_ConcentrationOfCreditRiskPolicyTextBlock_3" xlink:title="label: ConcentrationOfCreditRiskPolicyTextBlock to label_ConcentrationOfCreditRiskPolicyTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ComprehensiveLossPolicyTextBlock" xlink:label="ComprehensiveLossPolicyTextBlock" xlink:title="ComprehensiveLossPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ComprehensiveLossPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ComprehensiveLossPolicyTextBlock" xml:lang="en-US" id="label_ComprehensiveLossPolicyTextBlock">Comprehensive Loss [Policy Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ComprehensiveLossPolicyTextBlock" xlink:to="label_ComprehensiveLossPolicyTextBlock" xlink:title="label: ComprehensiveLossPolicyTextBlock to label_ComprehensiveLossPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ComprehensiveLossPolicyTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ComprehensiveLossPolicyTextBlock" xml:lang="en-US" id="label_ComprehensiveLossPolicyTextBlock_2">Describes the method of accounting for comprehensive loss.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ComprehensiveLossPolicyTextBlock" xlink:to="label_ComprehensiveLossPolicyTextBlock_2" xlink:title="label: ComprehensiveLossPolicyTextBlock to label_ComprehensiveLossPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ComprehensiveLossPolicyTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ComprehensiveLossPolicyTextBlock" xml:lang="en-US" id="label_ComprehensiveLossPolicyTextBlock_3">Comprehensive Loss</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ComprehensiveLossPolicyTextBlock" xlink:to="label_ComprehensiveLossPolicyTextBlock_3" xlink:title="label: ComprehensiveLossPolicyTextBlock to label_ComprehensiveLossPolicyTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsCurrentTableTextBlock" xlink:label="ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsCurrentTableTextBlock" xlink:title="ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsCurrentTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsCurrentTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsCurrentTableTextBlock" xml:lang="en-US" id="label_ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsCurrentTableTextBlock">Schedule of Accrued Expenses and Other Current Liabilities and Other Obligations, Current [Table Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsCurrentTableTextBlock" xlink:to="label_ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsCurrentTableTextBlock" xlink:title="label: ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsCurrentTableTextBlock to label_ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsCurrentTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsCurrentTableTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsCurrentTableTextBlock" xml:lang="en-US" id="label_ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsCurrentTableTextBlock_2">This table discloses the components of accrued expenses and other current liabilities and other obligations (current).</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsCurrentTableTextBlock" xlink:to="label_ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsCurrentTableTextBlock_2" xlink:title="label: ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsCurrentTableTextBlock to label_ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsCurrentTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsCurrentTableTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsCurrentTableTextBlock" xml:lang="en-US" id="label_ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsCurrentTableTextBlock_3">Accrued expenses and other current liabilities and other obligations (current)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsCurrentTableTextBlock" xlink:to="label_ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsCurrentTableTextBlock_3" xlink:title="label: ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsCurrentTableTextBlock to label_ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesAndOtherObligationsCurrentTableTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_AccruedResearchAndDevelopmentContractCosts" xlink:label="AccruedResearchAndDevelopmentContractCosts" xlink:title="AccruedResearchAndDevelopmentContractCosts"/>
    <label xlink:type="resource" xlink:label="label_AccruedResearchAndDevelopmentContractCosts" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AccruedResearchAndDevelopmentContractCosts" xml:lang="en-US" id="label_AccruedResearchAndDevelopmentContractCosts">Accrued Research and Development Contract Costs</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccruedResearchAndDevelopmentContractCosts" xlink:to="label_AccruedResearchAndDevelopmentContractCosts" xlink:title="label: AccruedResearchAndDevelopmentContractCosts to label_AccruedResearchAndDevelopmentContractCosts"/>
    <label xlink:type="resource" xlink:label="label_AccruedResearchAndDevelopmentContractCosts_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AccruedResearchAndDevelopmentContractCosts" xml:lang="en-US" id="label_AccruedResearchAndDevelopmentContractCosts_2">Research and development contract costs</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccruedResearchAndDevelopmentContractCosts" xlink:to="label_AccruedResearchAndDevelopmentContractCosts_2" xlink:title="label: AccruedResearchAndDevelopmentContractCosts to label_AccruedResearchAndDevelopmentContractCosts"/>
    <label xlink:type="resource" xlink:label="label_AccruedResearchAndDevelopmentContractCosts_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_AccruedResearchAndDevelopmentContractCosts" xml:lang="en-US" id="label_AccruedResearchAndDevelopmentContractCosts_3">This element represents the carrying value as of the balance sheet date of obligations incurred through that date and payable for research and development of the entity. It is used to reflect the current portion of liabilities (due within one year or within the normal operating cycle, if longer).</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccruedResearchAndDevelopmentContractCosts" xlink:to="label_AccruedResearchAndDevelopmentContractCosts_3" xlink:title="label: AccruedResearchAndDevelopmentContractCosts to label_AccruedResearchAndDevelopmentContractCosts"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AccruedLiabilitiesCurrentAbstract" xlink:label="AccruedLiabilitiesCurrentAbstract" xlink:title="AccruedLiabilitiesCurrentAbstract"/>
    <label xlink:type="resource" xlink:label="label_AccruedLiabilitiesCurrentAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AccruedLiabilitiesCurrentAbstract" xml:lang="en-US" id="label_AccruedLiabilitiesCurrentAbstract_2">Accrued Liabilities, Current [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccruedLiabilitiesCurrentAbstract" xlink:to="label_AccruedLiabilitiesCurrentAbstract_2" xlink:title="label: AccruedLiabilitiesCurrentAbstract to label_AccruedLiabilitiesCurrentAbstract"/>
    <label xlink:type="resource" xlink:label="label_AccruedLiabilitiesCurrentAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AccruedLiabilitiesCurrentAbstract" xml:lang="en-US" id="label_AccruedLiabilitiesCurrentAbstract">Accrued expenses and other current liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccruedLiabilitiesCurrentAbstract" xlink:to="label_AccruedLiabilitiesCurrentAbstract" xlink:title="label: AccruedLiabilitiesCurrentAbstract to label_AccruedLiabilitiesCurrentAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfQuarterlyFinancialInformationTableTextBlock" xlink:label="ScheduleOfQuarterlyFinancialInformationTableTextBlock" xlink:title="ScheduleOfQuarterlyFinancialInformationTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfQuarterlyFinancialInformationTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfQuarterlyFinancialInformationTableTextBlock" xml:lang="en-US" id="label_ScheduleOfQuarterlyFinancialInformationTableTextBlock">Schedule of Quarterly Financial Information [Table Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfQuarterlyFinancialInformationTableTextBlock" xlink:to="label_ScheduleOfQuarterlyFinancialInformationTableTextBlock" xlink:title="label: ScheduleOfQuarterlyFinancialInformationTableTextBlock to label_ScheduleOfQuarterlyFinancialInformationTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfQuarterlyFinancialInformationTableTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfQuarterlyFinancialInformationTableTextBlock" xml:lang="en-US" id="label_ScheduleOfQuarterlyFinancialInformationTableTextBlock_2">Disclosure of the quarterly financial data in the annual financial statements as a single table. The disclosure includes a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income (loss) before extraordinary items and cumulative effect of a change in accounting principle and earnings per share data.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfQuarterlyFinancialInformationTableTextBlock" xlink:to="label_ScheduleOfQuarterlyFinancialInformationTableTextBlock_2" xlink:title="label: ScheduleOfQuarterlyFinancialInformationTableTextBlock to label_ScheduleOfQuarterlyFinancialInformationTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfQuarterlyFinancialInformationTableTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfQuarterlyFinancialInformationTableTextBlock" xml:lang="en-US" id="label_ScheduleOfQuarterlyFinancialInformationTableTextBlock_3">Schedule of Quarterly Financial Data</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfQuarterlyFinancialInformationTableTextBlock" xlink:to="label_ScheduleOfQuarterlyFinancialInformationTableTextBlock_3" xlink:title="label: ScheduleOfQuarterlyFinancialInformationTableTextBlock to label_ScheduleOfQuarterlyFinancialInformationTableTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_InvitrogenCorporationMember" xlink:label="InvitrogenCorporationMember" xlink:title="InvitrogenCorporationMember"/>
    <label xlink:type="resource" xlink:label="label_InvitrogenCorporationMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InvitrogenCorporationMember" xml:lang="en-US" id="label_InvitrogenCorporationMember">Invitrogen Corporation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InvitrogenCorporationMember" xlink:to="label_InvitrogenCorporationMember" xlink:title="label: InvitrogenCorporationMember to label_InvitrogenCorporationMember"/>
    <label xlink:type="resource" xlink:label="label_InvitrogenCorporationMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_InvitrogenCorporationMember" xml:lang="en-US" id="label_InvitrogenCorporationMember_2">This member describes the indemnification guarantees related to Invitrogen Corporation.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InvitrogenCorporationMember" xlink:to="label_InvitrogenCorporationMember_2" xlink:title="label: InvitrogenCorporationMember to label_InvitrogenCorporationMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_AuroraDiscoveryIncMember" xlink:label="AuroraDiscoveryIncMember" xlink:title="AuroraDiscoveryIncMember"/>
    <label xlink:type="resource" xlink:label="label_AuroraDiscoveryIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AuroraDiscoveryIncMember" xml:lang="en-US" id="label_AuroraDiscoveryIncMember">Aurora Discovery, Inc.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AuroraDiscoveryIncMember" xlink:to="label_AuroraDiscoveryIncMember" xlink:title="label: AuroraDiscoveryIncMember to label_AuroraDiscoveryIncMember"/>
    <label xlink:type="resource" xlink:label="label_AuroraDiscoveryIncMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_AuroraDiscoveryIncMember" xml:lang="en-US" id="label_AuroraDiscoveryIncMember_2">This member describes the indemnification guarantees related to Aurora Discovery, Inc.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AuroraDiscoveryIncMember" xlink:to="label_AuroraDiscoveryIncMember_2" xlink:title="label: AuroraDiscoveryIncMember to label_AuroraDiscoveryIncMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_GuaranteeObligationsMaximumIndemnification" xlink:label="GuaranteeObligationsMaximumIndemnification" xlink:title="GuaranteeObligationsMaximumIndemnification"/>
    <label xlink:type="resource" xlink:label="label_GuaranteeObligationsMaximumIndemnification" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_GuaranteeObligationsMaximumIndemnification" xml:lang="en-US" id="label_GuaranteeObligationsMaximumIndemnification">Guarantee Obligations, Maximum Indemnification</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GuaranteeObligationsMaximumIndemnification" xlink:to="label_GuaranteeObligationsMaximumIndemnification" xlink:title="label: GuaranteeObligationsMaximumIndemnification to label_GuaranteeObligationsMaximumIndemnification"/>
    <label xlink:type="resource" xlink:label="label_GuaranteeObligationsMaximumIndemnification_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_GuaranteeObligationsMaximumIndemnification" xml:lang="en-US" id="label_GuaranteeObligationsMaximumIndemnification_2">Maximum indemnification under guarantee obligations</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GuaranteeObligationsMaximumIndemnification" xlink:to="label_GuaranteeObligationsMaximumIndemnification_2" xlink:title="label: GuaranteeObligationsMaximumIndemnification to label_GuaranteeObligationsMaximumIndemnification"/>
    <label xlink:type="resource" xlink:label="label_GuaranteeObligationsMaximumIndemnification_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_GuaranteeObligationsMaximumIndemnification" xml:lang="en-US" id="label_GuaranteeObligationsMaximumIndemnification_3">Maximum potential amount of future payments the guarantor could be required to make under the guarantee or each group of similar guarantees.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GuaranteeObligationsMaximumIndemnification" xlink:to="label_GuaranteeObligationsMaximumIndemnification_3" xlink:title="label: GuaranteeObligationsMaximumIndemnification to label_GuaranteeObligationsMaximumIndemnification"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_AvailableForSaleMarketableSecurities" xlink:label="AvailableForSaleMarketableSecurities" xlink:title="AvailableForSaleMarketableSecurities"/>
    <label xlink:type="resource" xlink:label="label_AvailableForSaleMarketableSecurities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AvailableForSaleMarketableSecurities" xml:lang="en-US" id="label_AvailableForSaleMarketableSecurities">Available-for-sale, Marketable Securities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleMarketableSecurities" xlink:to="label_AvailableForSaleMarketableSecurities" xlink:title="label: AvailableForSaleMarketableSecurities to label_AvailableForSaleMarketableSecurities"/>
    <label xlink:type="resource" xlink:label="label_AvailableForSaleMarketableSecurities_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AvailableForSaleMarketableSecurities" xml:lang="en-US" id="label_AvailableForSaleMarketableSecurities_2">Number of available-for-sale marketable securities, owned at period end</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleMarketableSecurities" xlink:to="label_AvailableForSaleMarketableSecurities_2" xlink:title="label: AvailableForSaleMarketableSecurities to label_AvailableForSaleMarketableSecurities"/>
    <label xlink:type="resource" xlink:label="label_AvailableForSaleMarketableSecurities_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_AvailableForSaleMarketableSecurities" xml:lang="en-US" id="label_AvailableForSaleMarketableSecurities_3">This element represents the disclosure regarding the number of available-for-sale marketable securities owned by the entity at the end of the reporting period.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleMarketableSecurities" xlink:to="label_AvailableForSaleMarketableSecurities_3" xlink:title="label: AvailableForSaleMarketableSecurities to label_AvailableForSaleMarketableSecurities"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaboratorLoanMember" xlink:label="CollaboratorLoanMember" xlink:title="CollaboratorLoanMember"/>
    <label xlink:type="resource" xlink:label="label_CollaboratorLoanMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CollaboratorLoanMember" xml:lang="en-US" id="label_CollaboratorLoanMember">Collaborator Loan</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaboratorLoanMember" xlink:to="label_CollaboratorLoanMember" xlink:title="label: CollaboratorLoanMember to label_CollaboratorLoanMember"/>
    <label xlink:type="resource" xlink:label="label_CollaboratorLoanMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CollaboratorLoanMember" xml:lang="en-US" id="label_CollaboratorLoanMember_2">This member describes details of collaboration agreements entered into by the entity.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CollaboratorLoanMember" xlink:to="label_CollaboratorLoanMember_2" xlink:title="label: CollaboratorLoanMember to label_CollaboratorLoanMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_RestructuringAndRelatedCostIncurredLeaseRestructuringExpense" xlink:label="RestructuringAndRelatedCostIncurredLeaseRestructuringExpense" xlink:title="RestructuringAndRelatedCostIncurredLeaseRestructuringExpense"/>
    <label xlink:type="resource" xlink:label="label_RestructuringAndRelatedCostIncurredLeaseRestructuringExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RestructuringAndRelatedCostIncurredLeaseRestructuringExpense" xml:lang="en-US" id="label_RestructuringAndRelatedCostIncurredLeaseRestructuringExpense">Restructuring and Related Cost Incurred Lease Restructuring Expense</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestructuringAndRelatedCostIncurredLeaseRestructuringExpense" xlink:to="label_RestructuringAndRelatedCostIncurredLeaseRestructuringExpense" xlink:title="label: RestructuringAndRelatedCostIncurredLeaseRestructuringExpense to label_RestructuringAndRelatedCostIncurredLeaseRestructuringExpense"/>
    <label xlink:type="resource" xlink:label="label_RestructuringAndRelatedCostIncurredLeaseRestructuringExpense_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RestructuringAndRelatedCostIncurredLeaseRestructuringExpense" xml:lang="en-US" id="label_RestructuringAndRelatedCostIncurredLeaseRestructuringExpense_2">Lease restructuring expense</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestructuringAndRelatedCostIncurredLeaseRestructuringExpense" xlink:to="label_RestructuringAndRelatedCostIncurredLeaseRestructuringExpense_2" xlink:title="label: RestructuringAndRelatedCostIncurredLeaseRestructuringExpense to label_RestructuringAndRelatedCostIncurredLeaseRestructuringExpense"/>
    <label xlink:type="resource" xlink:label="label_RestructuringAndRelatedCostIncurredLeaseRestructuringExpense_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_RestructuringAndRelatedCostIncurredLeaseRestructuringExpense" xml:lang="en-US" id="label_RestructuringAndRelatedCostIncurredLeaseRestructuringExpense_3">Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for lease restructuring expense.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestructuringAndRelatedCostIncurredLeaseRestructuringExpense" xlink:to="label_RestructuringAndRelatedCostIncurredLeaseRestructuringExpense_3" xlink:title="label: RestructuringAndRelatedCostIncurredLeaseRestructuringExpense to label_RestructuringAndRelatedCostIncurredLeaseRestructuringExpense"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_RestructuringAndRelatedCostIncurredLeaseOperatingExpense" xlink:label="RestructuringAndRelatedCostIncurredLeaseOperatingExpense" xlink:title="RestructuringAndRelatedCostIncurredLeaseOperatingExpense"/>
    <label xlink:type="resource" xlink:label="label_RestructuringAndRelatedCostIncurredLeaseOperatingExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RestructuringAndRelatedCostIncurredLeaseOperatingExpense" xml:lang="en-US" id="label_RestructuringAndRelatedCostIncurredLeaseOperatingExpense">Restructuring and Related Cost Incurred Lease Operating Expense</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestructuringAndRelatedCostIncurredLeaseOperatingExpense" xlink:to="label_RestructuringAndRelatedCostIncurredLeaseOperatingExpense" xlink:title="label: RestructuringAndRelatedCostIncurredLeaseOperatingExpense to label_RestructuringAndRelatedCostIncurredLeaseOperatingExpense"/>
    <label xlink:type="resource" xlink:label="label_RestructuringAndRelatedCostIncurredLeaseOperatingExpense_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RestructuringAndRelatedCostIncurredLeaseOperatingExpense" xml:lang="en-US" id="label_RestructuringAndRelatedCostIncurredLeaseOperatingExpense_2">Lease operating expense</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestructuringAndRelatedCostIncurredLeaseOperatingExpense" xlink:to="label_RestructuringAndRelatedCostIncurredLeaseOperatingExpense_2" xlink:title="label: RestructuringAndRelatedCostIncurredLeaseOperatingExpense to label_RestructuringAndRelatedCostIncurredLeaseOperatingExpense"/>
    <label xlink:type="resource" xlink:label="label_RestructuringAndRelatedCostIncurredLeaseOperatingExpense_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_RestructuringAndRelatedCostIncurredLeaseOperatingExpense" xml:lang="en-US" id="label_RestructuringAndRelatedCostIncurredLeaseOperatingExpense_3">Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for lease operating expense.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RestructuringAndRelatedCostIncurredLeaseOperatingExpense" xlink:to="label_RestructuringAndRelatedCostIncurredLeaseOperatingExpense_3" xlink:title="label: RestructuringAndRelatedCostIncurredLeaseOperatingExpense to label_RestructuringAndRelatedCostIncurredLeaseOperatingExpense"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_LeaseRestructuringAndOtherOperatingLeaseExpenseMember" xlink:label="LeaseRestructuringAndOtherOperatingLeaseExpenseMember" xlink:title="LeaseRestructuringAndOtherOperatingLeaseExpenseMember"/>
    <label xlink:type="resource" xlink:label="label_LeaseRestructuringAndOtherOperatingLeaseExpenseMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LeaseRestructuringAndOtherOperatingLeaseExpenseMember" xml:lang="en-US" id="label_LeaseRestructuringAndOtherOperatingLeaseExpenseMember">Lease restructuring and other operating lease expense</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeaseRestructuringAndOtherOperatingLeaseExpenseMember" xlink:to="label_LeaseRestructuringAndOtherOperatingLeaseExpenseMember" xlink:title="label: LeaseRestructuringAndOtherOperatingLeaseExpenseMember to label_LeaseRestructuringAndOtherOperatingLeaseExpenseMember"/>
    <label xlink:type="resource" xlink:label="label_LeaseRestructuringAndOtherOperatingLeaseExpenseMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_LeaseRestructuringAndOtherOperatingLeaseExpenseMember" xml:lang="en-US" id="label_LeaseRestructuringAndOtherOperatingLeaseExpenseMember_2">The lease restructuring and other operating lease expense incurred by the entity.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeaseRestructuringAndOtherOperatingLeaseExpenseMember" xlink:to="label_LeaseRestructuringAndOtherOperatingLeaseExpenseMember_2" xlink:title="label: LeaseRestructuringAndOtherOperatingLeaseExpenseMember to label_LeaseRestructuringAndOtherOperatingLeaseExpenseMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_EmployeeSeveranceBenefitsAndRelatedCostsMember" xlink:label="EmployeeSeveranceBenefitsAndRelatedCostsMember" xlink:title="EmployeeSeveranceBenefitsAndRelatedCostsMember"/>
    <label xlink:type="resource" xlink:label="label_EmployeeSeveranceBenefitsAndRelatedCostsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EmployeeSeveranceBenefitsAndRelatedCostsMember" xml:lang="en-US" id="label_EmployeeSeveranceBenefitsAndRelatedCostsMember">Employee severance, benefits and related costs</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EmployeeSeveranceBenefitsAndRelatedCostsMember" xlink:to="label_EmployeeSeveranceBenefitsAndRelatedCostsMember" xlink:title="label: EmployeeSeveranceBenefitsAndRelatedCostsMember to label_EmployeeSeveranceBenefitsAndRelatedCostsMember"/>
    <label xlink:type="resource" xlink:label="label_EmployeeSeveranceBenefitsAndRelatedCostsMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_EmployeeSeveranceBenefitsAndRelatedCostsMember" xml:lang="en-US" id="label_EmployeeSeveranceBenefitsAndRelatedCostsMember_2">The employee severance, benefits and related costs incurred by the entity.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EmployeeSeveranceBenefitsAndRelatedCostsMember" xlink:to="label_EmployeeSeveranceBenefitsAndRelatedCostsMember_2" xlink:title="label: EmployeeSeveranceBenefitsAndRelatedCostsMember to label_EmployeeSeveranceBenefitsAndRelatedCostsMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_LeaseholdImprovementsAndAssetImpairmentsMember" xlink:label="LeaseholdImprovementsAndAssetImpairmentsMember" xlink:title="LeaseholdImprovementsAndAssetImpairmentsMember"/>
    <label xlink:type="resource" xlink:label="label_LeaseholdImprovementsAndAssetImpairmentsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LeaseholdImprovementsAndAssetImpairmentsMember" xml:lang="en-US" id="label_LeaseholdImprovementsAndAssetImpairmentsMember">Leasehold improvements and asset impairments</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeaseholdImprovementsAndAssetImpairmentsMember" xlink:to="label_LeaseholdImprovementsAndAssetImpairmentsMember" xlink:title="label: LeaseholdImprovementsAndAssetImpairmentsMember to label_LeaseholdImprovementsAndAssetImpairmentsMember"/>
    <label xlink:type="resource" xlink:label="label_LeaseholdImprovementsAndAssetImpairmentsMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_LeaseholdImprovementsAndAssetImpairmentsMember" xml:lang="en-US" id="label_LeaseholdImprovementsAndAssetImpairmentsMember_2">The leasehold improvements and asset impairments made by the entity.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeaseholdImprovementsAndAssetImpairmentsMember" xlink:to="label_LeaseholdImprovementsAndAssetImpairmentsMember_2" xlink:title="label: LeaseholdImprovementsAndAssetImpairmentsMember to label_LeaseholdImprovementsAndAssetImpairmentsMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_NoncashWriteOffOfRestructuringAndRelatedCosts" xlink:label="NoncashWriteOffOfRestructuringAndRelatedCosts" xlink:title="NoncashWriteOffOfRestructuringAndRelatedCosts"/>
    <label xlink:type="resource" xlink:label="label_NoncashWriteOffOfRestructuringAndRelatedCosts" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NoncashWriteOffOfRestructuringAndRelatedCosts" xml:lang="en-US" id="label_NoncashWriteOffOfRestructuringAndRelatedCosts">Noncash Write-off of Restructuring and Related Costs</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NoncashWriteOffOfRestructuringAndRelatedCosts" xlink:to="label_NoncashWriteOffOfRestructuringAndRelatedCosts" xlink:title="label: NoncashWriteOffOfRestructuringAndRelatedCosts to label_NoncashWriteOffOfRestructuringAndRelatedCosts"/>
    <label xlink:type="resource" xlink:label="label_NoncashWriteOffOfRestructuringAndRelatedCosts_2" xlink:role="http://xbrl.us/us-gaap/role/label/negated" xlink:title="label_NoncashWriteOffOfRestructuringAndRelatedCosts" xml:lang="en-US" id="label_NoncashWriteOffOfRestructuringAndRelatedCosts_2">Non-cash write-off in 2003</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NoncashWriteOffOfRestructuringAndRelatedCosts" xlink:to="label_NoncashWriteOffOfRestructuringAndRelatedCosts_2" xlink:title="label: NoncashWriteOffOfRestructuringAndRelatedCosts to label_NoncashWriteOffOfRestructuringAndRelatedCosts"/>
    <label xlink:type="resource" xlink:label="label_NoncashWriteOffOfRestructuringAndRelatedCosts_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_NoncashWriteOffOfRestructuringAndRelatedCosts" xml:lang="en-US" id="label_NoncashWriteOffOfRestructuringAndRelatedCosts_3">This element represents the noncash write-off of restructuring and related costs.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NoncashWriteOffOfRestructuringAndRelatedCosts" xlink:to="label_NoncashWriteOffOfRestructuringAndRelatedCosts_3" xlink:title="label: NoncashWriteOffOfRestructuringAndRelatedCosts to label_NoncashWriteOffOfRestructuringAndRelatedCosts"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAxis" xlink:label="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAxis" xlink:title="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAxis"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAxis" xml:lang="en-US" id="label_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAxis">Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Award Type [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAxis" xlink:to="label_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAxis" xlink:title="label: ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAxis to label_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAxis"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAxis_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAxis" xml:lang="en-US" id="label_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAxis_2">This element represents the grouping of share-based compensation award types.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAxis" xlink:to="label_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAxis_2" xlink:title="label: ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAxis to label_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeAxis"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_2">Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_2" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract">Weighted-average assumptions for options and ESPP subscriptions granted</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeDomain" xlink:label="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeDomain" xlink:title="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeDomain"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeDomain" xml:lang="en-US" id="label_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeDomain">Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Award Type [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeDomain" xlink:to="label_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeDomain" xlink:title="label: ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeDomain to label_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeDomain"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeDomain_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeDomain" xml:lang="en-US" id="label_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeDomain_2">This element represents an individual share-based compensation award type.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeDomain" xlink:to="label_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeDomain_2" xlink:title="label: ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeDomain to label_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardTypeDomain"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xlink:label="ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xlink:title="ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xml:lang="en-US" id="label_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock">Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xlink:to="label_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xlink:title="label: ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock to label_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xml:lang="en-US" id="label_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_2">Disclosure of the number and weighted-average exercise prices for share options that were outstanding at the beginning and end of the year, exercisable at the end of the year, total exercisable and expected to vest at the end of the year and the number of share options or share units that were granted, exercised, forfeited, and expired during the year. Also includes weighted-average remaining contractual life and aggregate intrinsic value for outstanding, exercisable and total exercisable and expected to vest at the end of the year.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xlink:to="label_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_2" xlink:title="label: ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock to label_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xml:lang="en-US" id="label_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_3">Outstanding and vested options</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xlink:to="label_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_3" xlink:title="label: ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock to label_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfShareBasedCompensationRestrictedStockActivityTableTextBlock" xlink:label="ScheduleOfShareBasedCompensationRestrictedStockActivityTableTextBlock" xlink:title="ScheduleOfShareBasedCompensationRestrictedStockActivityTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfShareBasedCompensationRestrictedStockActivityTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfShareBasedCompensationRestrictedStockActivityTableTextBlock" xml:lang="en-US" id="label_ScheduleOfShareBasedCompensationRestrictedStockActivityTableTextBlock">Schedule of Share-based Compensation, Restricted Stock Activity [Table Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfShareBasedCompensationRestrictedStockActivityTableTextBlock" xlink:to="label_ScheduleOfShareBasedCompensationRestrictedStockActivityTableTextBlock" xlink:title="label: ScheduleOfShareBasedCompensationRestrictedStockActivityTableTextBlock to label_ScheduleOfShareBasedCompensationRestrictedStockActivityTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfShareBasedCompensationRestrictedStockActivityTableTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfShareBasedCompensationRestrictedStockActivityTableTextBlock" xml:lang="en-US" id="label_ScheduleOfShareBasedCompensationRestrictedStockActivityTableTextBlock_2">Disclosure of the number and weighted-average grant date fair value for restricted stock that were outstanding at the beginning and end of the year, and the number of shares of restricted stock that were granted, vested, or forfeited during the year.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfShareBasedCompensationRestrictedStockActivityTableTextBlock" xlink:to="label_ScheduleOfShareBasedCompensationRestrictedStockActivityTableTextBlock_2" xlink:title="label: ScheduleOfShareBasedCompensationRestrictedStockActivityTableTextBlock to label_ScheduleOfShareBasedCompensationRestrictedStockActivityTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfShareBasedCompensationRestrictedStockActivityTableTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfShareBasedCompensationRestrictedStockActivityTableTextBlock" xml:lang="en-US" id="label_ScheduleOfShareBasedCompensationRestrictedStockActivityTableTextBlock_3">Restricted stock</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfShareBasedCompensationRestrictedStockActivityTableTextBlock" xlink:to="label_ScheduleOfShareBasedCompensationRestrictedStockActivityTableTextBlock_3" xlink:title="label: ScheduleOfShareBasedCompensationRestrictedStockActivityTableTextBlock to label_ScheduleOfShareBasedCompensationRestrictedStockActivityTableTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock" xlink:label="ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock" xlink:title="ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock" xml:lang="en-US" id="label_ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock">Schedule of Share-based Compensation, Employee Stock Purchase Plan, Activity [Table Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock" xlink:to="label_ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock" xlink:title="label: ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock to label_ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock" xml:lang="en-US" id="label_ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock_2">Disclosure of the number of shares purchased and the average price paid per share for shares issued to employees under the ESPP during the year.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock" xlink:to="label_ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock_2" xlink:title="label: ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock to label_ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock" xml:lang="en-US" id="label_ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock_3">Shares issued under Employee Stock Purchase Plan</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock" xlink:to="label_ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock_3" xlink:title="label: ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock to label_ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_StockAndOptionPlan2006Member" xlink:label="StockAndOptionPlan2006Member" xlink:title="StockAndOptionPlan2006Member"/>
    <label xlink:type="resource" xlink:label="label_StockAndOptionPlan2006Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockAndOptionPlan2006Member" xml:lang="en-US" id="label_StockAndOptionPlan2006Member">2006 Stock and Option Plan</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockAndOptionPlan2006Member" xlink:to="label_StockAndOptionPlan2006Member" xlink:title="label: StockAndOptionPlan2006Member to label_StockAndOptionPlan2006Member"/>
    <label xlink:type="resource" xlink:label="label_StockAndOptionPlan2006Member_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_StockAndOptionPlan2006Member" xml:lang="en-US" id="label_StockAndOptionPlan2006Member_2">The element describes the details pertaining to the 2006 Stock and Option Plan.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockAndOptionPlan2006Member" xlink:to="label_StockAndOptionPlan2006Member_2" xlink:title="label: StockAndOptionPlan2006Member to label_StockAndOptionPlan2006Member"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_StockAndOptionPlan1996Member" xlink:label="StockAndOptionPlan1996Member" xlink:title="StockAndOptionPlan1996Member"/>
    <label xlink:type="resource" xlink:label="label_StockAndOptionPlan1996Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockAndOptionPlan1996Member" xml:lang="en-US" id="label_StockAndOptionPlan1996Member">1996 Stock and Option Plan</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockAndOptionPlan1996Member" xlink:to="label_StockAndOptionPlan1996Member" xlink:title="label: StockAndOptionPlan1996Member to label_StockAndOptionPlan1996Member"/>
    <label xlink:type="resource" xlink:label="label_StockAndOptionPlan1996Member_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_StockAndOptionPlan1996Member" xml:lang="en-US" id="label_StockAndOptionPlan1996Member_2">The element describes the details pertaining to the 1996 Stock and Option Plan.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockAndOptionPlan1996Member" xlink:to="label_StockAndOptionPlan1996Member_2" xlink:title="label: StockAndOptionPlan1996Member to label_StockAndOptionPlan1996Member"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_StockAndOptionPlan1994Member" xlink:label="StockAndOptionPlan1994Member" xlink:title="StockAndOptionPlan1994Member"/>
    <label xlink:type="resource" xlink:label="label_StockAndOptionPlan1994Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockAndOptionPlan1994Member" xml:lang="en-US" id="label_StockAndOptionPlan1994Member">1994 Stock and Option Plan</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockAndOptionPlan1994Member" xlink:to="label_StockAndOptionPlan1994Member" xlink:title="label: StockAndOptionPlan1994Member to label_StockAndOptionPlan1994Member"/>
    <label xlink:type="resource" xlink:label="label_StockAndOptionPlan1994Member_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_StockAndOptionPlan1994Member" xml:lang="en-US" id="label_StockAndOptionPlan1994Member_2">The element describes the details pertaining to the 1994 Stock and Option Plan.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockAndOptionPlan1994Member" xlink:to="label_StockAndOptionPlan1994Member_2" xlink:title="label: StockAndOptionPlan1994Member to label_StockAndOptionPlan1994Member"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_StockAndOptionPlan1991Member" xlink:label="StockAndOptionPlan1991Member" xlink:title="StockAndOptionPlan1991Member"/>
    <label xlink:type="resource" xlink:label="label_StockAndOptionPlan1991Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockAndOptionPlan1991Member" xml:lang="en-US" id="label_StockAndOptionPlan1991Member">1991 Stock and Option Plan</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockAndOptionPlan1991Member" xlink:to="label_StockAndOptionPlan1991Member" xlink:title="label: StockAndOptionPlan1991Member to label_StockAndOptionPlan1991Member"/>
    <label xlink:type="resource" xlink:label="label_StockAndOptionPlan1991Member_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_StockAndOptionPlan1991Member" xml:lang="en-US" id="label_StockAndOptionPlan1991Member_2">The element describes the details pertaining to the 1991 Stock and Option Plan.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockAndOptionPlan1991Member" xlink:to="label_StockAndOptionPlan1991Member_2" xlink:title="label: StockAndOptionPlan1991Member to label_StockAndOptionPlan1991Member"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ShareBasedCompensationArrangementByShareBasedPaymentAwardAveragePricePaidPerShare" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardAveragePricePaidPerShare" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardAveragePricePaidPerShare"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAveragePricePaidPerShare" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAveragePricePaidPerShare" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAveragePricePaidPerShare">Share-based Compensation Arrangement by Share-based Payment Award, Stock Price Per Share</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardAveragePricePaidPerShare" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAveragePricePaidPerShare" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardAveragePricePaidPerShare to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAveragePricePaidPerShare"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAveragePricePaidPerShare_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAveragePricePaidPerShare" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAveragePricePaidPerShare_2">The average price paid per share of the shares newly issued during the reporting period under the plan.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardAveragePricePaidPerShare" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAveragePricePaidPerShare_2" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardAveragePricePaidPerShare to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAveragePricePaidPerShare"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAveragePricePaidPerShare_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAveragePricePaidPerShare" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAveragePricePaidPerShare_3">Average price paid per share</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardAveragePricePaidPerShare" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAveragePricePaidPerShare_3" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardAveragePricePaidPerShare to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAveragePricePaidPerShare"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAssumedInConnectionWithAcquisitions" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAssumedInConnectionWithAcquisitions" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAssumedInConnectionWithAcquisitions"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAssumedInConnectionWithAcquisitions" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAssumedInConnectionWithAcquisitions" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAssumedInConnectionWithAcquisitions">Share-based Compensation Arrangement by Share-based Payment Award, Options Outstanding Assumed in Connection with Acquisitions</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAssumedInConnectionWithAcquisitions" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAssumedInConnectionWithAcquisitions" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAssumedInConnectionWithAcquisitions to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAssumedInConnectionWithAcquisitions"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAssumedInConnectionWithAcquisitions_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAssumedInConnectionWithAcquisitions" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAssumedInConnectionWithAcquisitions_2">Options not included to purchase shares of the entity's common stock (in shares)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAssumedInConnectionWithAcquisitions" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAssumedInConnectionWithAcquisitions_2" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAssumedInConnectionWithAcquisitions to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAssumedInConnectionWithAcquisitions"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAssumedInConnectionWithAcquisitions_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAssumedInConnectionWithAcquisitions" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAssumedInConnectionWithAcquisitions_3">This element represents the options not included to purchase shares of the entity's common stock.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAssumedInConnectionWithAcquisitions" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAssumedInConnectionWithAcquisitions_3" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAssumedInConnectionWithAcquisitions to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAssumedInConnectionWithAcquisitions"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceAssumedInConnectionWithAcquisitions" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceAssumedInConnectionWithAcquisitions" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceAssumedInConnectionWithAcquisitions"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceAssumedInConnectionWithAcquisitions" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceAssumedInConnectionWithAcquisitions" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceAssumedInConnectionWithAcquisitions">Share-based Compensation Arrangement by Share-based Payment Award, Outstanding Weighted Average Exercise Price Assumed in Connection with Acquisitions</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceAssumedInConnectionWithAcquisitions" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceAssumedInConnectionWithAcquisitions" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceAssumedInConnectionWithAcquisitions to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceAssumedInConnectionWithAcquisitions"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceAssumedInConnectionWithAcquisitions_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceAssumedInConnectionWithAcquisitions" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceAssumedInConnectionWithAcquisitions_2">Weighted average exercise price of options not available to purchase shares (in dollars per share)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceAssumedInConnectionWithAcquisitions" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceAssumedInConnectionWithAcquisitions_2" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceAssumedInConnectionWithAcquisitions to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceAssumedInConnectionWithAcquisitions"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceAssumedInConnectionWithAcquisitions_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceAssumedInConnectionWithAcquisitions" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceAssumedInConnectionWithAcquisitions_3">This element represents the weighted average exercise price of options not available to purchase shares.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceAssumedInConnectionWithAcquisitions" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceAssumedInConnectionWithAcquisitions_3" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceAssumedInConnectionWithAcquisitions to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceAssumedInConnectionWithAcquisitions"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketPrice" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketPrice" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketPrice"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketPrice" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketPrice" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketPrice">Share-based Compensation Arrangement by Share-based Payment Award Market Price</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketPrice" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketPrice" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketPrice to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketPrice"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketPrice_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketPrice" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketPrice_2">This element represents the market value per share on the last trading day of the year based on the average of the high and low price on that date.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketPrice" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketPrice_2" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketPrice to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketPrice"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketPrice_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketPrice" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketPrice_3">Aggregate intrinsic value of shares, market price (in dollars per share)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketPrice" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketPrice_3" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketPrice to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketPrice"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ExercisePriceRangeOneMember" xlink:label="ExercisePriceRangeOneMember" xlink:title="ExercisePriceRangeOneMember"/>
    <label xlink:type="resource" xlink:label="label_ExercisePriceRangeOneMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ExercisePriceRangeOneMember" xml:lang="en-US" id="label_ExercisePriceRangeOneMember">Range of Exercise Prices, $8.68-$20.00.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExercisePriceRangeOneMember" xlink:to="label_ExercisePriceRangeOneMember" xlink:title="label: ExercisePriceRangeOneMember to label_ExercisePriceRangeOneMember"/>
    <label xlink:type="resource" xlink:label="label_ExercisePriceRangeOneMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ExercisePriceRangeOneMember" xml:lang="en-US" id="label_ExercisePriceRangeOneMember_2">Represents the first range of exercise prices in dollars per share for the purpose of disclosing shares potentially issuable under outstanding stock options, as well as other option information.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExercisePriceRangeOneMember" xlink:to="label_ExercisePriceRangeOneMember_2" xlink:title="label: ExercisePriceRangeOneMember to label_ExercisePriceRangeOneMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ExercisePriceRangeTwoMember" xlink:label="ExercisePriceRangeTwoMember" xlink:title="ExercisePriceRangeTwoMember"/>
    <label xlink:type="resource" xlink:label="label_ExercisePriceRangeTwoMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ExercisePriceRangeTwoMember" xml:lang="en-US" id="label_ExercisePriceRangeTwoMember">Range of Exercise Prices, $20.01 -$30.00.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExercisePriceRangeTwoMember" xlink:to="label_ExercisePriceRangeTwoMember" xlink:title="label: ExercisePriceRangeTwoMember to label_ExercisePriceRangeTwoMember"/>
    <label xlink:type="resource" xlink:label="label_ExercisePriceRangeTwoMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ExercisePriceRangeTwoMember" xml:lang="en-US" id="label_ExercisePriceRangeTwoMember_2">Represents the second range of exercise prices in dollars per share for the purpose of disclosing shares potentially issuable under outstanding stock options, as well as other option information.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExercisePriceRangeTwoMember" xlink:to="label_ExercisePriceRangeTwoMember_2" xlink:title="label: ExercisePriceRangeTwoMember to label_ExercisePriceRangeTwoMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ExercisePriceRangeThreeMember" xlink:label="ExercisePriceRangeThreeMember" xlink:title="ExercisePriceRangeThreeMember"/>
    <label xlink:type="resource" xlink:label="label_ExercisePriceRangeThreeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ExercisePriceRangeThreeMember" xml:lang="en-US" id="label_ExercisePriceRangeThreeMember">Range of Exercise Prices, $30.01 -$40.00.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExercisePriceRangeThreeMember" xlink:to="label_ExercisePriceRangeThreeMember" xlink:title="label: ExercisePriceRangeThreeMember to label_ExercisePriceRangeThreeMember"/>
    <label xlink:type="resource" xlink:label="label_ExercisePriceRangeThreeMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ExercisePriceRangeThreeMember" xml:lang="en-US" id="label_ExercisePriceRangeThreeMember_2">Represents the third range of exercise prices in dollars per share for the purpose of disclosing shares potentially issuable under outstanding stock options, as well as other option information.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExercisePriceRangeThreeMember" xlink:to="label_ExercisePriceRangeThreeMember_2" xlink:title="label: ExercisePriceRangeThreeMember to label_ExercisePriceRangeThreeMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ExercisePriceRangeFourMember" xlink:label="ExercisePriceRangeFourMember" xlink:title="ExercisePriceRangeFourMember"/>
    <label xlink:type="resource" xlink:label="label_ExercisePriceRangeFourMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ExercisePriceRangeFourMember" xml:lang="en-US" id="label_ExercisePriceRangeFourMember">Range of Exercise Prices, $40.01 -$50.00.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExercisePriceRangeFourMember" xlink:to="label_ExercisePriceRangeFourMember" xlink:title="label: ExercisePriceRangeFourMember to label_ExercisePriceRangeFourMember"/>
    <label xlink:type="resource" xlink:label="label_ExercisePriceRangeFourMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ExercisePriceRangeFourMember" xml:lang="en-US" id="label_ExercisePriceRangeFourMember_2">Represents the fourth range of exercise prices in dollars per share for the purpose of disclosing shares potentially issuable under outstanding stock options, as well as other option information.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExercisePriceRangeFourMember" xlink:to="label_ExercisePriceRangeFourMember_2" xlink:title="label: ExercisePriceRangeFourMember to label_ExercisePriceRangeFourMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ExercisePriceRangeFiveMember" xlink:label="ExercisePriceRangeFiveMember" xlink:title="ExercisePriceRangeFiveMember"/>
    <label xlink:type="resource" xlink:label="label_ExercisePriceRangeFiveMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ExercisePriceRangeFiveMember" xml:lang="en-US" id="label_ExercisePriceRangeFiveMember">Range of Exercise Prices, $50.01 -$67.34.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExercisePriceRangeFiveMember" xlink:to="label_ExercisePriceRangeFiveMember" xlink:title="label: ExercisePriceRangeFiveMember to label_ExercisePriceRangeFiveMember"/>
    <label xlink:type="resource" xlink:label="label_ExercisePriceRangeFiveMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ExercisePriceRangeFiveMember" xml:lang="en-US" id="label_ExercisePriceRangeFiveMember_2">Represents the fifth range of exercise prices in dollars per share for the purpose of disclosing shares potentially issuable under outstanding stock options, as well as other option information.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExercisePriceRangeFiveMember" xlink:to="label_ExercisePriceRangeFiveMember_2" xlink:title="label: ExercisePriceRangeFiveMember to label_ExercisePriceRangeFiveMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPurchasePeriod" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPurchasePeriod" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPurchasePeriod"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPurchasePeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPurchasePeriod" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPurchasePeriod">Share-based Compensation Arrangement by Share-based Payment Award, Initial Offering Purchase Period</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPurchasePeriod" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPurchasePeriod" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPurchasePeriod to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPurchasePeriod"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPurchasePeriod_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPurchasePeriod" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPurchasePeriod_2">A description of the bifurcation of time period when the company made its initial offering of a class of securities.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPurchasePeriod" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPurchasePeriod_2" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPurchasePeriod to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPurchasePeriod"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPurchasePeriod_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPurchasePeriod" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPurchasePeriod_3">Bifurcation of time period</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPurchasePeriod" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPurchasePeriod_3" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPurchasePeriod to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPurchasePeriod"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ShareBasedCompensationArrangementByShareBasedPaymentAwardEligibleEmployeePurchasePricePercentageOfFairValue" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardEligibleEmployeePurchasePricePercentageOfFairValue" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEligibleEmployeePurchasePricePercentageOfFairValue"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEligibleEmployeePurchasePricePercentageOfFairValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEligibleEmployeePurchasePricePercentageOfFairValue" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEligibleEmployeePurchasePricePercentageOfFairValue">Share-based Compensation Arrangement by Share-based Payment Award, Eligible Employee Purchase Price Percentage of Fair Value</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardEligibleEmployeePurchasePricePercentageOfFairValue" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEligibleEmployeePurchasePricePercentageOfFairValue" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardEligibleEmployeePurchasePricePercentageOfFairValue to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEligibleEmployeePurchasePricePercentageOfFairValue"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEligibleEmployeePurchasePricePercentageOfFairValue_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEligibleEmployeePurchasePricePercentageOfFairValue" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEligibleEmployeePurchasePricePercentageOfFairValue_2">This element represents the percentage of the fair market value of the entity's common stock on the first day of the applicable offering period or last day of the applicable purchase period that eligible employees may purchase shares of the entity's common stock under the employee stock purchase plan.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardEligibleEmployeePurchasePricePercentageOfFairValue" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEligibleEmployeePurchasePricePercentageOfFairValue_2" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardEligibleEmployeePurchasePricePercentageOfFairValue to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEligibleEmployeePurchasePricePercentageOfFairValue"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEligibleEmployeePurchasePricePercentageOfFairValue_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEligibleEmployeePurchasePricePercentageOfFairValue" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEligibleEmployeePurchasePricePercentageOfFairValue_3">Purchase of shares at discounted fair market value of common stock (as a percent)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardEligibleEmployeePurchasePricePercentageOfFairValue" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEligibleEmployeePurchasePricePercentageOfFairValue_3" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardEligibleEmployeePurchasePricePercentageOfFairValue to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEligibleEmployeePurchasePricePercentageOfFairValue"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ApprovedIncreaseInNumberOfCommonShares" xlink:label="ApprovedIncreaseInNumberOfCommonShares" xlink:title="ApprovedIncreaseInNumberOfCommonShares"/>
    <label xlink:type="resource" xlink:label="label_ApprovedIncreaseInNumberOfCommonShares" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ApprovedIncreaseInNumberOfCommonShares" xml:lang="en-US" id="label_ApprovedIncreaseInNumberOfCommonShares">Approved Increase in Number of Common Shares</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ApprovedIncreaseInNumberOfCommonShares" xlink:to="label_ApprovedIncreaseInNumberOfCommonShares" xlink:title="label: ApprovedIncreaseInNumberOfCommonShares to label_ApprovedIncreaseInNumberOfCommonShares"/>
    <label xlink:type="resource" xlink:label="label_ApprovedIncreaseInNumberOfCommonShares_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ApprovedIncreaseInNumberOfCommonShares" xml:lang="en-US" id="label_ApprovedIncreaseInNumberOfCommonShares_2">The increase in number of shares of common stock authorized for issuance pursuant to the Plan.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ApprovedIncreaseInNumberOfCommonShares" xlink:to="label_ApprovedIncreaseInNumberOfCommonShares_2" xlink:title="label: ApprovedIncreaseInNumberOfCommonShares to label_ApprovedIncreaseInNumberOfCommonShares"/>
    <label xlink:type="resource" xlink:label="label_ApprovedIncreaseInNumberOfCommonShares_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ApprovedIncreaseInNumberOfCommonShares" xml:lang="en-US" id="label_ApprovedIncreaseInNumberOfCommonShares_3">Approved increase in number of shares authorized for issuance (in shares)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ApprovedIncreaseInNumberOfCommonShares" xlink:to="label_ApprovedIncreaseInNumberOfCommonShares_3" xlink:title="label: ApprovedIncreaseInNumberOfCommonShares to label_ApprovedIncreaseInNumberOfCommonShares"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPeriod" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPeriod" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPeriod"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPeriod" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPeriod">Share-based Compensation Arrangement by Share-based Payment Award, Initial Offering Period</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPeriod" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPeriod" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPeriod to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPeriod"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPeriod_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPeriod" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPeriod_2">A description of the time period when the company made its initial offering of a class of securities.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPeriod" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPeriod_2" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPeriod to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPeriod"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPeriod_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPeriod" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPeriod_3">Offering period for employee stock purchase plan</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPeriod" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPeriod_3" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPeriod to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOfferingPeriod"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ClassOfRightNumberOfSecuritiesCalledByEachRights" xlink:label="ClassOfRightNumberOfSecuritiesCalledByEachRights" xlink:title="ClassOfRightNumberOfSecuritiesCalledByEachRights"/>
    <label xlink:type="resource" xlink:label="label_ClassOfRightNumberOfSecuritiesCalledByEachRights" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ClassOfRightNumberOfSecuritiesCalledByEachRights" xml:lang="en-US" id="label_ClassOfRightNumberOfSecuritiesCalledByEachRights">Class of Right, Number of Securities Called by Each Rights</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassOfRightNumberOfSecuritiesCalledByEachRights" xlink:to="label_ClassOfRightNumberOfSecuritiesCalledByEachRights" xlink:title="label: ClassOfRightNumberOfSecuritiesCalledByEachRights to label_ClassOfRightNumberOfSecuritiesCalledByEachRights"/>
    <label xlink:type="resource" xlink:label="label_ClassOfRightNumberOfSecuritiesCalledByEachRights_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ClassOfRightNumberOfSecuritiesCalledByEachRights" xml:lang="en-US" id="label_ClassOfRightNumberOfSecuritiesCalledByEachRights_2">The number of shares of Series A junior participating preferred stock each right entitles the holder to purchase.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassOfRightNumberOfSecuritiesCalledByEachRights" xlink:to="label_ClassOfRightNumberOfSecuritiesCalledByEachRights_2" xlink:title="label: ClassOfRightNumberOfSecuritiesCalledByEachRights to label_ClassOfRightNumberOfSecuritiesCalledByEachRights"/>
    <label xlink:type="resource" xlink:label="label_ClassOfRightNumberOfSecuritiesCalledByEachRights_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ClassOfRightNumberOfSecuritiesCalledByEachRights" xml:lang="en-US" id="label_ClassOfRightNumberOfSecuritiesCalledByEachRights_3">Number of shares of Series A junior participating preferred stock each right entitles the holder to purchase</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassOfRightNumberOfSecuritiesCalledByEachRights" xlink:to="label_ClassOfRightNumberOfSecuritiesCalledByEachRights_3" xlink:title="label: ClassOfRightNumberOfSecuritiesCalledByEachRights to label_ClassOfRightNumberOfSecuritiesCalledByEachRights"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ClassOfRightPurchasePriceOfRights" xlink:label="ClassOfRightPurchasePriceOfRights" xlink:title="ClassOfRightPurchasePriceOfRights"/>
    <label xlink:type="resource" xlink:label="label_ClassOfRightPurchasePriceOfRights" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ClassOfRightPurchasePriceOfRights" xml:lang="en-US" id="label_ClassOfRightPurchasePriceOfRights">Class of Right Purchase Price of Rights</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassOfRightPurchasePriceOfRights" xlink:to="label_ClassOfRightPurchasePriceOfRights" xlink:title="label: ClassOfRightPurchasePriceOfRights to label_ClassOfRightPurchasePriceOfRights"/>
    <label xlink:type="resource" xlink:label="label_ClassOfRightPurchasePriceOfRights_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ClassOfRightPurchasePriceOfRights" xml:lang="en-US" id="label_ClassOfRightPurchasePriceOfRights_2">This element represents the purchase price of the preferred stock per share.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassOfRightPurchasePriceOfRights" xlink:to="label_ClassOfRightPurchasePriceOfRights_2" xlink:title="label: ClassOfRightPurchasePriceOfRights to label_ClassOfRightPurchasePriceOfRights"/>
    <label xlink:type="resource" xlink:label="label_ClassOfRightPurchasePriceOfRights_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ClassOfRightPurchasePriceOfRights" xml:lang="en-US" id="label_ClassOfRightPurchasePriceOfRights_3">Purchase price per one half of one-hundredths of a Junior Preferred Share</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassOfRightPurchasePriceOfRights" xlink:to="label_ClassOfRightPurchasePriceOfRights_3" xlink:title="label: ClassOfRightPurchasePriceOfRights to label_ClassOfRightPurchasePriceOfRights"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_MinimumPercentageOfOutstandingCommonStockAcquiredForExerciseOfRights" xlink:label="MinimumPercentageOfOutstandingCommonStockAcquiredForExerciseOfRights" xlink:title="MinimumPercentageOfOutstandingCommonStockAcquiredForExerciseOfRights"/>
    <label xlink:type="resource" xlink:label="label_MinimumPercentageOfOutstandingCommonStockAcquiredForExerciseOfRights" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MinimumPercentageOfOutstandingCommonStockAcquiredForExerciseOfRights" xml:lang="en-US" id="label_MinimumPercentageOfOutstandingCommonStockAcquiredForExerciseOfRights">Minimum Percentage of Outstanding Common Stock Acquired for Exercise of Rights</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MinimumPercentageOfOutstandingCommonStockAcquiredForExerciseOfRights" xlink:to="label_MinimumPercentageOfOutstandingCommonStockAcquiredForExerciseOfRights" xlink:title="label: MinimumPercentageOfOutstandingCommonStockAcquiredForExerciseOfRights to label_MinimumPercentageOfOutstandingCommonStockAcquiredForExerciseOfRights"/>
    <label xlink:type="resource" xlink:label="label_MinimumPercentageOfOutstandingCommonStockAcquiredForExerciseOfRights_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_MinimumPercentageOfOutstandingCommonStockAcquiredForExerciseOfRights" xml:lang="en-US" id="label_MinimumPercentageOfOutstandingCommonStockAcquiredForExerciseOfRights_2">This element represents the minimum percentage of outstanding common stock acquired in order to exercise the rights.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MinimumPercentageOfOutstandingCommonStockAcquiredForExerciseOfRights" xlink:to="label_MinimumPercentageOfOutstandingCommonStockAcquiredForExerciseOfRights_2" xlink:title="label: MinimumPercentageOfOutstandingCommonStockAcquiredForExerciseOfRights to label_MinimumPercentageOfOutstandingCommonStockAcquiredForExerciseOfRights"/>
    <label xlink:type="resource" xlink:label="label_MinimumPercentageOfOutstandingCommonStockAcquiredForExerciseOfRights_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_MinimumPercentageOfOutstandingCommonStockAcquiredForExerciseOfRights" xml:lang="en-US" id="label_MinimumPercentageOfOutstandingCommonStockAcquiredForExerciseOfRights_3">Minimum percentage of outstanding common stock acquired in order to exercise the rights (as a percent)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MinimumPercentageOfOutstandingCommonStockAcquiredForExerciseOfRights" xlink:to="label_MinimumPercentageOfOutstandingCommonStockAcquiredForExerciseOfRights_3" xlink:title="label: MinimumPercentageOfOutstandingCommonStockAcquiredForExerciseOfRights to label_MinimumPercentageOfOutstandingCommonStockAcquiredForExerciseOfRights"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_MarketValueMultiplierBasedOnPurchasePrice" xlink:label="MarketValueMultiplierBasedOnPurchasePrice" xlink:title="MarketValueMultiplierBasedOnPurchasePrice"/>
    <label xlink:type="resource" xlink:label="label_MarketValueMultiplierBasedOnPurchasePrice" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MarketValueMultiplierBasedOnPurchasePrice" xml:lang="en-US" id="label_MarketValueMultiplierBasedOnPurchasePrice">Market Value Multiplier based on Purchase Price</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MarketValueMultiplierBasedOnPurchasePrice" xlink:to="label_MarketValueMultiplierBasedOnPurchasePrice" xlink:title="label: MarketValueMultiplierBasedOnPurchasePrice to label_MarketValueMultiplierBasedOnPurchasePrice"/>
    <label xlink:type="resource" xlink:label="label_MarketValueMultiplierBasedOnPurchasePrice_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_MarketValueMultiplierBasedOnPurchasePrice" xml:lang="en-US" id="label_MarketValueMultiplierBasedOnPurchasePrice_2">The multiplier effect on market value of common shares based on payment of purchase price.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MarketValueMultiplierBasedOnPurchasePrice" xlink:to="label_MarketValueMultiplierBasedOnPurchasePrice_2" xlink:title="label: MarketValueMultiplierBasedOnPurchasePrice to label_MarketValueMultiplierBasedOnPurchasePrice"/>
    <label xlink:type="resource" xlink:label="label_MarketValueMultiplierBasedOnPurchasePrice_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_MarketValueMultiplierBasedOnPurchasePrice" xml:lang="en-US" id="label_MarketValueMultiplierBasedOnPurchasePrice_3">Purchase price multiplier</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MarketValueMultiplierBasedOnPurchasePrice" xlink:to="label_MarketValueMultiplierBasedOnPurchasePrice_3" xlink:title="label: MarketValueMultiplierBasedOnPurchasePrice to label_MarketValueMultiplierBasedOnPurchasePrice"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_PercentageSaleOfAssetsForExerciseOfRights" xlink:label="PercentageSaleOfAssetsForExerciseOfRights" xlink:title="PercentageSaleOfAssetsForExerciseOfRights"/>
    <label xlink:type="resource" xlink:label="label_PercentageSaleOfAssetsForExerciseOfRights" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PercentageSaleOfAssetsForExerciseOfRights" xml:lang="en-US" id="label_PercentageSaleOfAssetsForExerciseOfRights">Percentage Sale of Assets for Exercise of Rights</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageSaleOfAssetsForExerciseOfRights" xlink:to="label_PercentageSaleOfAssetsForExerciseOfRights" xlink:title="label: PercentageSaleOfAssetsForExerciseOfRights to label_PercentageSaleOfAssetsForExerciseOfRights"/>
    <label xlink:type="resource" xlink:label="label_PercentageSaleOfAssetsForExerciseOfRights_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_PercentageSaleOfAssetsForExerciseOfRights" xml:lang="en-US" id="label_PercentageSaleOfAssetsForExerciseOfRights_2">The percentage sale of assets for the rights to be exercised.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageSaleOfAssetsForExerciseOfRights" xlink:to="label_PercentageSaleOfAssetsForExerciseOfRights_2" xlink:title="label: PercentageSaleOfAssetsForExerciseOfRights to label_PercentageSaleOfAssetsForExerciseOfRights"/>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_2">Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_2" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract">Weighted average Exercise Price</label>
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    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract_2">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]</label>
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    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract">Restricted stock, weighted-average grant-date fair value</label>
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    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardIncreaseInNumberOfSharesAuthorized" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardIncreaseInNumberOfSharesAuthorized" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardIncreaseInNumberOfSharesAuthorized">Share-based Compensation Arrangement by Share based Payment Award, Increase in Number of Shares Authorized</label>
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    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpirationTermMinimum" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpirationTermMinimum" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpirationTermMinimum"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpirationTermMinimum" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpirationTermMinimum" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpirationTermMinimum">Share-based Compensation Arrangement by Share-based Payment Award, Award Expiration Term, Minimum</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpirationTermMinimum" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpirationTermMinimum" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpirationTermMinimum to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpirationTermMinimum"/>
    <label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpirationTermMinimum_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpirationTermMinimum" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpirationTermMinimum_2">Expiration of stock options (in years)</label>
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    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfStockAndStockOptionEquityPlansTableTextBlock" xlink:label="ScheduleOfStockAndStockOptionEquityPlansTableTextBlock" xlink:title="ScheduleOfStockAndStockOptionEquityPlansTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfStockAndStockOptionEquityPlansTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfStockAndStockOptionEquityPlansTableTextBlock" xml:lang="en-US" id="label_ScheduleOfStockAndStockOptionEquityPlansTableTextBlock">Schedule of Stock and Stock Option, Equity Plans [Table Text Block]</label>
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    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_OutstandingRestrictedStockAndRestrictedStockUnitsGrantPrice" xlink:label="OutstandingRestrictedStockAndRestrictedStockUnitsGrantPrice" xlink:title="OutstandingRestrictedStockAndRestrictedStockUnitsGrantPrice"/>
    <label xlink:type="resource" xlink:label="label_OutstandingRestrictedStockAndRestrictedStockUnitsGrantPrice" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OutstandingRestrictedStockAndRestrictedStockUnitsGrantPrice" xml:lang="en-US" id="label_OutstandingRestrictedStockAndRestrictedStockUnitsGrantPrice">Outstanding Restricted Stock and Restricted Stock Unit Grant Price</label>
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    <label xlink:type="resource" xlink:label="label_OutstandingRestrictedStockAndRestrictedStockUnitsGrantPrice_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OutstandingRestrictedStockAndRestrictedStockUnitsGrantPrice" xml:lang="en-US" id="label_OutstandingRestrictedStockAndRestrictedStockUnitsGrantPrice_2">Grant price of outstanding restricted stock and restricted stock units (in dollars per share)</label>
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    <label xlink:type="resource" xlink:label="label_OutstandingRestrictedStockAndRestrictedStockUnitsGrantPrice_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_OutstandingRestrictedStockAndRestrictedStockUnitsGrantPrice" xml:lang="en-US" id="label_OutstandingRestrictedStockAndRestrictedStockUnitsGrantPrice_3">The price at which all shares of outstanding restricted stock and restricted stock units had been granted.</label>
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    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_GeneralVestingPeriodOfOptionsRestrictedStockAndRestrictedStockUnits" xlink:label="GeneralVestingPeriodOfOptionsRestrictedStockAndRestrictedStockUnits" xlink:title="GeneralVestingPeriodOfOptionsRestrictedStockAndRestrictedStockUnits"/>
    <label xlink:type="resource" xlink:label="label_GeneralVestingPeriodOfOptionsRestrictedStockAndRestrictedStockUnits" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_GeneralVestingPeriodOfOptionsRestrictedStockAndRestrictedStockUnits" xml:lang="en-US" id="label_GeneralVestingPeriodOfOptionsRestrictedStockAndRestrictedStockUnits">General Vesting Period of Options Restricted Stock and Restricted Stock Units</label>
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    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_NumberOfSharePurchaseRightsForEachShareOfCommonStockOwned" xlink:label="NumberOfSharePurchaseRightsForEachShareOfCommonStockOwned" xlink:title="NumberOfSharePurchaseRightsForEachShareOfCommonStockOwned"/>
    <label xlink:type="resource" xlink:label="label_NumberOfSharePurchaseRightsForEachShareOfCommonStockOwned" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NumberOfSharePurchaseRightsForEachShareOfCommonStockOwned" xml:lang="en-US" id="label_NumberOfSharePurchaseRightsForEachShareOfCommonStockOwned">Number of Share Purchase Rights for Each Share of Common Stock Owned</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfSharePurchaseRightsForEachShareOfCommonStockOwned" xlink:to="label_NumberOfSharePurchaseRightsForEachShareOfCommonStockOwned_2" xlink:title="label: NumberOfSharePurchaseRightsForEachShareOfCommonStockOwned to label_NumberOfSharePurchaseRightsForEachShareOfCommonStockOwned"/>
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    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_PercentageOwnershipOfOutstandingCommonStockForExerciseOfRights" xlink:label="PercentageOwnershipOfOutstandingCommonStockForExerciseOfRights" xlink:title="PercentageOwnershipOfOutstandingCommonStockForExerciseOfRights"/>
    <label xlink:type="resource" xlink:label="label_PercentageOwnershipOfOutstandingCommonStockForExerciseOfRights" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PercentageOwnershipOfOutstandingCommonStockForExerciseOfRights" xml:lang="en-US" id="label_PercentageOwnershipOfOutstandingCommonStockForExerciseOfRights">Percentage Ownership of Outstanding Common Stock for Exercise of Rights</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageOwnershipOfOutstandingCommonStockForExerciseOfRights" xlink:to="label_PercentageOwnershipOfOutstandingCommonStockForExerciseOfRights_2" xlink:title="label: PercentageOwnershipOfOutstandingCommonStockForExerciseOfRights to label_PercentageOwnershipOfOutstandingCommonStockForExerciseOfRights"/>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageOwnershipOfOutstandingCommonStockForExerciseOfRights" xlink:to="label_PercentageOwnershipOfOutstandingCommonStockForExerciseOfRights_3" xlink:title="label: PercentageOwnershipOfOutstandingCommonStockForExerciseOfRights to label_PercentageOwnershipOfOutstandingCommonStockForExerciseOfRights"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_NumberOfSharesCommonStockExchangedForRight" xlink:label="NumberOfSharesCommonStockExchangedForRight" xlink:title="NumberOfSharesCommonStockExchangedForRight"/>
    <label xlink:type="resource" xlink:label="label_NumberOfSharesCommonStockExchangedForRight" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NumberOfSharesCommonStockExchangedForRight" xml:lang="en-US" id="label_NumberOfSharesCommonStockExchangedForRight">Number of Shares Common Stock Exchanged for Right</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfSharesCommonStockExchangedForRight" xlink:to="label_NumberOfSharesCommonStockExchangedForRight" xlink:title="label: NumberOfSharesCommonStockExchangedForRight to label_NumberOfSharesCommonStockExchangedForRight"/>
    <label xlink:type="resource" xlink:label="label_NumberOfSharesCommonStockExchangedForRight_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NumberOfSharesCommonStockExchangedForRight" xml:lang="en-US" id="label_NumberOfSharesCommonStockExchangedForRight_2">Number of shares of common stock each right can be exchanged for</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfSharesCommonStockExchangedForRight" xlink:to="label_NumberOfSharesCommonStockExchangedForRight_2" xlink:title="label: NumberOfSharesCommonStockExchangedForRight to label_NumberOfSharesCommonStockExchangedForRight"/>
    <label xlink:type="resource" xlink:label="label_NumberOfSharesCommonStockExchangedForRight_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_NumberOfSharesCommonStockExchangedForRight" xml:lang="en-US" id="label_NumberOfSharesCommonStockExchangedForRight_3">Number of shares of common stock that each right can be exchanged for.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfSharesCommonStockExchangedForRight" xlink:to="label_NumberOfSharesCommonStockExchangedForRight_3" xlink:title="label: NumberOfSharesCommonStockExchangedForRight to label_NumberOfSharesCommonStockExchangedForRight"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_RedemptionPriceOfRights" xlink:label="RedemptionPriceOfRights" xlink:title="RedemptionPriceOfRights"/>
    <label xlink:type="resource" xlink:label="label_RedemptionPriceOfRights" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RedemptionPriceOfRights" xml:lang="en-US" id="label_RedemptionPriceOfRights">Redemption Price of Rights</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RedemptionPriceOfRights" xlink:to="label_RedemptionPriceOfRights" xlink:title="label: RedemptionPriceOfRights to label_RedemptionPriceOfRights"/>
    <label xlink:type="resource" xlink:label="label_RedemptionPriceOfRights_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RedemptionPriceOfRights" xml:lang="en-US" id="label_RedemptionPriceOfRights_2">Redemption price of rights (in dollars per share)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RedemptionPriceOfRights" xlink:to="label_RedemptionPriceOfRights_2" xlink:title="label: RedemptionPriceOfRights to label_RedemptionPriceOfRights"/>
    <label xlink:type="resource" xlink:label="label_RedemptionPriceOfRights_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_RedemptionPriceOfRights" xml:lang="en-US" id="label_RedemptionPriceOfRights_3">Price per right that the Board of Directors may redeem the rights at.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RedemptionPriceOfRights" xlink:to="label_RedemptionPriceOfRights_3" xlink:title="label: RedemptionPriceOfRights to label_RedemptionPriceOfRights"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_WeightedAverageRemainingContractualLifeAbstract" xlink:label="WeightedAverageRemainingContractualLifeAbstract" xlink:title="WeightedAverageRemainingContractualLifeAbstract"/>
    <label xlink:type="resource" xlink:label="label_WeightedAverageRemainingContractualLifeAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WeightedAverageRemainingContractualLifeAbstract" xml:lang="en-US" id="label_WeightedAverageRemainingContractualLifeAbstract">Weighted Average Remaining Contractual Life [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageRemainingContractualLifeAbstract" xlink:to="label_WeightedAverageRemainingContractualLifeAbstract" xlink:title="label: WeightedAverageRemainingContractualLifeAbstract to label_WeightedAverageRemainingContractualLifeAbstract"/>
    <label xlink:type="resource" xlink:label="label_WeightedAverageRemainingContractualLifeAbstract_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_WeightedAverageRemainingContractualLifeAbstract" xml:lang="en-US" id="label_WeightedAverageRemainingContractualLifeAbstract_2">Weighted-average Remaining Contractual Life</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageRemainingContractualLifeAbstract" xlink:to="label_WeightedAverageRemainingContractualLifeAbstract_2" xlink:title="label: WeightedAverageRemainingContractualLifeAbstract to label_WeightedAverageRemainingContractualLifeAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_AggregateIntrinsicValueAbstract" xlink:label="AggregateIntrinsicValueAbstract" xlink:title="AggregateIntrinsicValueAbstract"/>
    <label xlink:type="resource" xlink:label="label_AggregateIntrinsicValueAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AggregateIntrinsicValueAbstract" xml:lang="en-US" id="label_AggregateIntrinsicValueAbstract">Aggregate Intrinsic Value [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AggregateIntrinsicValueAbstract" xlink:to="label_AggregateIntrinsicValueAbstract" xlink:title="label: AggregateIntrinsicValueAbstract to label_AggregateIntrinsicValueAbstract"/>
    <label xlink:type="resource" xlink:label="label_AggregateIntrinsicValueAbstract_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AggregateIntrinsicValueAbstract" xml:lang="en-US" id="label_AggregateIntrinsicValueAbstract_2">Aggregate Intrinsic Value</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AggregateIntrinsicValueAbstract" xlink:to="label_AggregateIntrinsicValueAbstract_2" xlink:title="label: AggregateIntrinsicValueAbstract to label_AggregateIntrinsicValueAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_TotalIntrinsicValueAndCashReceivedAbstract" xlink:label="TotalIntrinsicValueAndCashReceivedAbstract" xlink:title="TotalIntrinsicValueAndCashReceivedAbstract"/>
    <label xlink:type="resource" xlink:label="label_TotalIntrinsicValueAndCashReceivedAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_TotalIntrinsicValueAndCashReceivedAbstract" xml:lang="en-US" id="label_TotalIntrinsicValueAndCashReceivedAbstract">Total Intrinsic Value and Cash Received [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TotalIntrinsicValueAndCashReceivedAbstract" xlink:to="label_TotalIntrinsicValueAndCashReceivedAbstract" xlink:title="label: TotalIntrinsicValueAndCashReceivedAbstract to label_TotalIntrinsicValueAndCashReceivedAbstract"/>
    <label xlink:type="resource" xlink:label="label_TotalIntrinsicValueAndCashReceivedAbstract_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_TotalIntrinsicValueAndCashReceivedAbstract" xml:lang="en-US" id="label_TotalIntrinsicValueAndCashReceivedAbstract_2">Total Intrinsic Value and Cash Received</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TotalIntrinsicValueAndCashReceivedAbstract" xlink:to="label_TotalIntrinsicValueAndCashReceivedAbstract_2" xlink:title="label: TotalIntrinsicValueAndCashReceivedAbstract to label_TotalIntrinsicValueAndCashReceivedAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_UnrecognizedExcessTaxDeductionsShareBasedCompensation" xlink:label="UnrecognizedExcessTaxDeductionsShareBasedCompensation" xlink:title="UnrecognizedExcessTaxDeductionsShareBasedCompensation"/>
    <label xlink:type="resource" xlink:label="label_UnrecognizedExcessTaxDeductionsShareBasedCompensation_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_UnrecognizedExcessTaxDeductionsShareBasedCompensation" xml:lang="en-US" id="label_UnrecognizedExcessTaxDeductionsShareBasedCompensation_3">Unrecognized Excess Tax Deductions Share-based Compensation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UnrecognizedExcessTaxDeductionsShareBasedCompensation" xlink:to="label_UnrecognizedExcessTaxDeductionsShareBasedCompensation_3" xlink:title="label: UnrecognizedExcessTaxDeductionsShareBasedCompensation to label_UnrecognizedExcessTaxDeductionsShareBasedCompensation"/>
    <label xlink:type="resource" xlink:label="label_UnrecognizedExcessTaxDeductionsShareBasedCompensation" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_UnrecognizedExcessTaxDeductionsShareBasedCompensation" xml:lang="en-US" id="label_UnrecognizedExcessTaxDeductionsShareBasedCompensation">Gross amount of excess tax deduction in net operating loss carryforward</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UnrecognizedExcessTaxDeductionsShareBasedCompensation" xlink:to="label_UnrecognizedExcessTaxDeductionsShareBasedCompensation" xlink:title="label: UnrecognizedExcessTaxDeductionsShareBasedCompensation to label_UnrecognizedExcessTaxDeductionsShareBasedCompensation"/>
    <label xlink:type="resource" xlink:label="label_UnrecognizedExcessTaxDeductionsShareBasedCompensation_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_UnrecognizedExcessTaxDeductionsShareBasedCompensation" xml:lang="en-US" id="label_UnrecognizedExcessTaxDeductionsShareBasedCompensation_2">The amount by which the deduction by the entity on its tax return for an award of stock (associated with any share-based compensation plan other than an employee stock ownership plan (ESOP)) exceeds the cumulative compensation cost for common stock or preferred stock recognized for financial reporting.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UnrecognizedExcessTaxDeductionsShareBasedCompensation" xlink:to="label_UnrecognizedExcessTaxDeductionsShareBasedCompensation_2" xlink:title="label: UnrecognizedExcessTaxDeductionsShareBasedCompensation to label_UnrecognizedExcessTaxDeductionsShareBasedCompensation"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_OperatingLossAndTaxCreditCarryforwardsTable" xlink:label="OperatingLossAndTaxCreditCarryforwardsTable" xlink:title="OperatingLossAndTaxCreditCarryforwardsTable"/>
    <label xlink:type="resource" xlink:label="label_OperatingLossAndTaxCreditCarryforwardsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLossAndTaxCreditCarryforwardsTable" xml:lang="en-US" id="label_OperatingLossAndTaxCreditCarryforwardsTable">Operating Loss and Tax Credit Carryforwards [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLossAndTaxCreditCarryforwardsTable" xlink:to="label_OperatingLossAndTaxCreditCarryforwardsTable" xlink:title="label: OperatingLossAndTaxCreditCarryforwardsTable to label_OperatingLossAndTaxCreditCarryforwardsTable"/>
    <label xlink:type="resource" xlink:label="label_OperatingLossAndTaxCreditCarryforwardsTable_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_OperatingLossAndTaxCreditCarryforwardsTable" xml:lang="en-US" id="label_OperatingLossAndTaxCreditCarryforwardsTable_2">Schedule reflecting pertinent information, such as tax authority, amounts, and expiration dates, of net operating loss carryforwards, including an assessment of the likelihood of utilization and tax credit carryforwards.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLossAndTaxCreditCarryforwardsTable" xlink:to="label_OperatingLossAndTaxCreditCarryforwardsTable_2" xlink:title="label: OperatingLossAndTaxCreditCarryforwardsTable to label_OperatingLossAndTaxCreditCarryforwardsTable"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_OperatingLossAndTaxCreditCarryforwardsAxis" xlink:label="OperatingLossAndTaxCreditCarryforwardsAxis" xlink:title="OperatingLossAndTaxCreditCarryforwardsAxis"/>
    <label xlink:type="resource" xlink:label="label_OperatingLossAndTaxCreditCarryforwardsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLossAndTaxCreditCarryforwardsAxis" xml:lang="en-US" id="label_OperatingLossAndTaxCreditCarryforwardsAxis">Operating Loss and Tax Credit Carryforwards [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLossAndTaxCreditCarryforwardsAxis" xlink:to="label_OperatingLossAndTaxCreditCarryforwardsAxis" xlink:title="label: OperatingLossAndTaxCreditCarryforwardsAxis to label_OperatingLossAndTaxCreditCarryforwardsAxis"/>
    <label xlink:type="resource" xlink:label="label_OperatingLossAndTaxCreditCarryforwardsAxis_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_OperatingLossAndTaxCreditCarryforwardsAxis" xml:lang="en-US" id="label_OperatingLossAndTaxCreditCarryforwardsAxis_2">Pertinent information pertaining to each tax loss carryforward, by tax authority and tax credit carryforwards.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLossAndTaxCreditCarryforwardsAxis" xlink:to="label_OperatingLossAndTaxCreditCarryforwardsAxis_2" xlink:title="label: OperatingLossAndTaxCreditCarryforwardsAxis to label_OperatingLossAndTaxCreditCarryforwardsAxis"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_TaxCarryforwardsLineItems" xlink:label="TaxCarryforwardsLineItems" xlink:title="TaxCarryforwardsLineItems"/>
    <label xlink:type="resource" xlink:label="label_TaxCarryforwardsLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_TaxCarryforwardsLineItems" xml:lang="en-US" id="label_TaxCarryforwardsLineItems">Tax Carryforwards [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TaxCarryforwardsLineItems" xlink:to="label_TaxCarryforwardsLineItems" xlink:title="label: TaxCarryforwardsLineItems to label_TaxCarryforwardsLineItems"/>
    <label xlink:type="resource" xlink:label="label_TaxCarryforwardsLineItems_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_TaxCarryforwardsLineItems" xml:lang="en-US" id="label_TaxCarryforwardsLineItems_2">Tax Carryforwards</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TaxCarryforwardsLineItems" xlink:to="label_TaxCarryforwardsLineItems_2" xlink:title="label: TaxCarryforwardsLineItems to label_TaxCarryforwardsLineItems"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_SeriesAJuniorParticipatingPreferredStockParValue" xlink:label="SeriesAJuniorParticipatingPreferredStockParValue" xlink:title="SeriesAJuniorParticipatingPreferredStockParValue"/>
    <label xlink:type="resource" xlink:label="label_SeriesAJuniorParticipatingPreferredStockParValue_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SeriesAJuniorParticipatingPreferredStockParValue" xml:lang="en-US" id="label_SeriesAJuniorParticipatingPreferredStockParValue_2">Series A Junior Participating Preferred Stock, Par Value</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SeriesAJuniorParticipatingPreferredStockParValue" xlink:to="label_SeriesAJuniorParticipatingPreferredStockParValue_2" xlink:title="label: SeriesAJuniorParticipatingPreferredStockParValue to label_SeriesAJuniorParticipatingPreferredStockParValue"/>
    <label xlink:type="resource" xlink:label="label_SeriesAJuniorParticipatingPreferredStockParValue_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SeriesAJuniorParticipatingPreferredStockParValue" xml:lang="en-US" id="label_SeriesAJuniorParticipatingPreferredStockParValue_3">Series A junior participating preferred stock, par value (in dollars per share)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SeriesAJuniorParticipatingPreferredStockParValue" xlink:to="label_SeriesAJuniorParticipatingPreferredStockParValue_3" xlink:title="label: SeriesAJuniorParticipatingPreferredStockParValue to label_SeriesAJuniorParticipatingPreferredStockParValue"/>
    <label xlink:type="resource" xlink:label="label_SeriesAJuniorParticipatingPreferredStockParValue" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_SeriesAJuniorParticipatingPreferredStockParValue" xml:lang="en-US" id="label_SeriesAJuniorParticipatingPreferredStockParValue">Par value of Series A junior participating preferred stock.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SeriesAJuniorParticipatingPreferredStockParValue" xlink:to="label_SeriesAJuniorParticipatingPreferredStockParValue" xlink:title="label: SeriesAJuniorParticipatingPreferredStockParValue to label_SeriesAJuniorParticipatingPreferredStockParValue"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_DefinedContributionPlanNumberOfSharesAvailableForGrant" xlink:label="DefinedContributionPlanNumberOfSharesAvailableForGrant" xlink:title="DefinedContributionPlanNumberOfSharesAvailableForGrant"/>
    <label xlink:type="resource" xlink:label="label_DefinedContributionPlanNumberOfSharesAvailableForGrant" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DefinedContributionPlanNumberOfSharesAvailableForGrant" xml:lang="en-US" id="label_DefinedContributionPlanNumberOfSharesAvailableForGrant">Defined Contribution Plan, Number of Shares Available for Grant</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DefinedContributionPlanNumberOfSharesAvailableForGrant" xlink:to="label_DefinedContributionPlanNumberOfSharesAvailableForGrant" xlink:title="label: DefinedContributionPlanNumberOfSharesAvailableForGrant to label_DefinedContributionPlanNumberOfSharesAvailableForGrant"/>
    <label xlink:type="resource" xlink:label="label_DefinedContributionPlanNumberOfSharesAvailableForGrant_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DefinedContributionPlanNumberOfSharesAvailableForGrant" xml:lang="en-US" id="label_DefinedContributionPlanNumberOfSharesAvailableForGrant_2">Represents the number of shares available for grant under 401(k) retirement plan during the period.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DefinedContributionPlanNumberOfSharesAvailableForGrant" xlink:to="label_DefinedContributionPlanNumberOfSharesAvailableForGrant_2" xlink:title="label: DefinedContributionPlanNumberOfSharesAvailableForGrant to label_DefinedContributionPlanNumberOfSharesAvailableForGrant"/>
    <label xlink:type="resource" xlink:label="label_DefinedContributionPlanNumberOfSharesAvailableForGrant_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DefinedContributionPlanNumberOfSharesAvailableForGrant" xml:lang="en-US" id="label_DefinedContributionPlanNumberOfSharesAvailableForGrant_3">Common stock shares remained available for grant (in shares)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DefinedContributionPlanNumberOfSharesAvailableForGrant" xlink:to="label_DefinedContributionPlanNumberOfSharesAvailableForGrant_3" xlink:title="label: DefinedContributionPlanNumberOfSharesAvailableForGrant to label_DefinedContributionPlanNumberOfSharesAvailableForGrant"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_StockAndOptionPlanOtherMember" xlink:label="StockAndOptionPlanOtherMember" xlink:title="StockAndOptionPlanOtherMember"/>
    <label xlink:type="resource" xlink:label="label_StockAndOptionPlanOtherMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockAndOptionPlanOtherMember" xml:lang="en-US" id="label_StockAndOptionPlanOtherMember">Other</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockAndOptionPlanOtherMember" xlink:to="label_StockAndOptionPlanOtherMember" xlink:title="label: StockAndOptionPlanOtherMember to label_StockAndOptionPlanOtherMember"/>
    <label xlink:type="resource" xlink:label="label_StockAndOptionPlanOtherMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_StockAndOptionPlanOtherMember" xml:lang="en-US" id="label_StockAndOptionPlanOtherMember_2">The element describes the details pertaining to other Stock and Option Plan.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockAndOptionPlanOtherMember" xlink:to="label_StockAndOptionPlanOtherMember_2" xlink:title="label: StockAndOptionPlanOtherMember to label_StockAndOptionPlanOtherMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CovenantToMaintainCashCashEquivalentsAndMarketableSecurities" xlink:label="CovenantToMaintainCashCashEquivalentsAndMarketableSecurities" xlink:title="CovenantToMaintainCashCashEquivalentsAndMarketableSecurities"/>
    <label xlink:type="resource" xlink:label="label_CovenantToMaintainCashCashEquivalentsAndMarketableSecurities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CovenantToMaintainCashCashEquivalentsAndMarketableSecurities" xml:lang="en-US" id="label_CovenantToMaintainCashCashEquivalentsAndMarketableSecurities">Covenant to Maintain Cash, Cash Equivalent, and Marketable Securities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CovenantToMaintainCashCashEquivalentsAndMarketableSecurities" xlink:to="label_CovenantToMaintainCashCashEquivalentsAndMarketableSecurities" xlink:title="label: CovenantToMaintainCashCashEquivalentsAndMarketableSecurities to label_CovenantToMaintainCashCashEquivalentsAndMarketableSecurities"/>
    <label xlink:type="resource" xlink:label="label_CovenantToMaintainCashCashEquivalentsAndMarketableSecurities_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CovenantToMaintainCashCashEquivalentsAndMarketableSecurities" xml:lang="en-US" id="label_CovenantToMaintainCashCashEquivalentsAndMarketableSecurities_2">Covenant to maintain cash, cash equivalents and marketable securities in domestic deposit and securities accounts</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CovenantToMaintainCashCashEquivalentsAndMarketableSecurities" xlink:to="label_CovenantToMaintainCashCashEquivalentsAndMarketableSecurities_2" xlink:title="label: CovenantToMaintainCashCashEquivalentsAndMarketableSecurities to label_CovenantToMaintainCashCashEquivalentsAndMarketableSecurities"/>
    <label xlink:type="resource" xlink:label="label_CovenantToMaintainCashCashEquivalentsAndMarketableSecurities_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CovenantToMaintainCashCashEquivalentsAndMarketableSecurities" xml:lang="en-US" id="label_CovenantToMaintainCashCashEquivalentsAndMarketableSecurities_3">This element represents the covenant to maintain cash, cash equivalents and marketable securities in domestic deposit and securities accounts.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CovenantToMaintainCashCashEquivalentsAndMarketableSecurities" xlink:to="label_CovenantToMaintainCashCashEquivalentsAndMarketableSecurities_3" xlink:title="label: CovenantToMaintainCashCashEquivalentsAndMarketableSecurities to label_CovenantToMaintainCashCashEquivalentsAndMarketableSecurities"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_MarginedValueOfCashCashEquivalentsAndMarketableSecurities" xlink:label="MarginedValueOfCashCashEquivalentsAndMarketableSecurities" xlink:title="MarginedValueOfCashCashEquivalentsAndMarketableSecurities"/>
    <label xlink:type="resource" xlink:label="label_MarginedValueOfCashCashEquivalentsAndMarketableSecurities_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MarginedValueOfCashCashEquivalentsAndMarketableSecurities" xml:lang="en-US" id="label_MarginedValueOfCashCashEquivalentsAndMarketableSecurities_3">Margined Value of Cash, Cash Equivalents, and Marketable Securities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MarginedValueOfCashCashEquivalentsAndMarketableSecurities" xlink:to="label_MarginedValueOfCashCashEquivalentsAndMarketableSecurities_3" xlink:title="label: MarginedValueOfCashCashEquivalentsAndMarketableSecurities to label_MarginedValueOfCashCashEquivalentsAndMarketableSecurities"/>
    <label xlink:type="resource" xlink:label="label_MarginedValueOfCashCashEquivalentsAndMarketableSecurities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_MarginedValueOfCashCashEquivalentsAndMarketableSecurities" xml:lang="en-US" id="label_MarginedValueOfCashCashEquivalentsAndMarketableSecurities">Margined value of cash, cash equivalents and marketable securities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MarginedValueOfCashCashEquivalentsAndMarketableSecurities" xlink:to="label_MarginedValueOfCashCashEquivalentsAndMarketableSecurities" xlink:title="label: MarginedValueOfCashCashEquivalentsAndMarketableSecurities to label_MarginedValueOfCashCashEquivalentsAndMarketableSecurities"/>
    <label xlink:type="resource" xlink:label="label_MarginedValueOfCashCashEquivalentsAndMarketableSecurities_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_MarginedValueOfCashCashEquivalentsAndMarketableSecurities" xml:lang="en-US" id="label_MarginedValueOfCashCashEquivalentsAndMarketableSecurities_2">This element represents the margined value of cash, cash equivalents and marketable securities.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MarginedValueOfCashCashEquivalentsAndMarketableSecurities" xlink:to="label_MarginedValueOfCashCashEquivalentsAndMarketableSecurities_2" xlink:title="label: MarginedValueOfCashCashEquivalentsAndMarketableSecurities to label_MarginedValueOfCashCashEquivalentsAndMarketableSecurities"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_LineOfCreditFacilityVariableRateBasis" xlink:label="LineOfCreditFacilityVariableRateBasis" xlink:title="LineOfCreditFacilityVariableRateBasis"/>
    <label xlink:type="resource" xlink:label="label_LineOfCreditFacilityVariableRateBasis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LineOfCreditFacilityVariableRateBasis" xml:lang="en-US" id="label_LineOfCreditFacilityVariableRateBasis">Loans under credit agreement, interest rate base</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LineOfCreditFacilityVariableRateBasis" xlink:to="label_LineOfCreditFacilityVariableRateBasis" xlink:title="label: LineOfCreditFacilityVariableRateBasis to label_LineOfCreditFacilityVariableRateBasis"/>
    <label xlink:type="resource" xlink:label="label_LineOfCreditFacilityVariableRateBasis_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LineOfCreditFacilityVariableRateBasis" xml:lang="en-US" id="label_LineOfCreditFacilityVariableRateBasis_2">Line of Credit Facility, Variable Rate Basis</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LineOfCreditFacilityVariableRateBasis" xlink:to="label_LineOfCreditFacilityVariableRateBasis_2" xlink:title="label: LineOfCreditFacilityVariableRateBasis to label_LineOfCreditFacilityVariableRateBasis"/>
    <label xlink:type="resource" xlink:label="label_LineOfCreditFacilityVariableRateBasis_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_LineOfCreditFacilityVariableRateBasis" xml:lang="en-US" id="label_LineOfCreditFacilityVariableRateBasis_3">The reference rate for the variable rate of the line of credit facility, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LineOfCreditFacilityVariableRateBasis" xlink:to="label_LineOfCreditFacilityVariableRateBasis_3" xlink:title="label: LineOfCreditFacilityVariableRateBasis to label_LineOfCreditFacilityVariableRateBasis"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_LineOfCreditFacilitySpreadOnVariableRates" xlink:label="LineOfCreditFacilitySpreadOnVariableRates" xlink:title="LineOfCreditFacilitySpreadOnVariableRates"/>
    <label xlink:type="resource" xlink:label="label_LineOfCreditFacilitySpreadOnVariableRates" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LineOfCreditFacilitySpreadOnVariableRates" xml:lang="en-US" id="label_LineOfCreditFacilitySpreadOnVariableRates">Line of Credit Facility, Spread on Variable Rates</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LineOfCreditFacilitySpreadOnVariableRates" xlink:to="label_LineOfCreditFacilitySpreadOnVariableRates" xlink:title="label: LineOfCreditFacilitySpreadOnVariableRates to label_LineOfCreditFacilitySpreadOnVariableRates"/>
    <label xlink:type="resource" xlink:label="label_LineOfCreditFacilitySpreadOnVariableRates_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_LineOfCreditFacilitySpreadOnVariableRates" xml:lang="en-US" id="label_LineOfCreditFacilitySpreadOnVariableRates_2">The percentage points added to the reference rate to compute the variable rate on the line of credit facility.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LineOfCreditFacilitySpreadOnVariableRates" xlink:to="label_LineOfCreditFacilitySpreadOnVariableRates_2" xlink:title="label: LineOfCreditFacilitySpreadOnVariableRates to label_LineOfCreditFacilitySpreadOnVariableRates"/>
    <label xlink:type="resource" xlink:label="label_LineOfCreditFacilitySpreadOnVariableRates_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LineOfCreditFacilitySpreadOnVariableRates" xml:lang="en-US" id="label_LineOfCreditFacilitySpreadOnVariableRates_3">Loans under credit agreement, interest rate above base (as a percent)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LineOfCreditFacilitySpreadOnVariableRates" xlink:to="label_LineOfCreditFacilitySpreadOnVariableRates_3" xlink:title="label: LineOfCreditFacilitySpreadOnVariableRates to label_LineOfCreditFacilitySpreadOnVariableRates"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CanadianOperatingSubsidiaryMember" xlink:label="CanadianOperatingSubsidiaryMember" xlink:title="CanadianOperatingSubsidiaryMember"/>
    <label xlink:type="resource" xlink:label="label_CanadianOperatingSubsidiaryMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CanadianOperatingSubsidiaryMember" xml:lang="en-US" id="label_CanadianOperatingSubsidiaryMember">This element represents details pertaining to the restricted stock units granted to the entity's Canadian operating subsidiary.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CanadianOperatingSubsidiaryMember" xlink:to="label_CanadianOperatingSubsidiaryMember" xlink:title="label: CanadianOperatingSubsidiaryMember to label_CanadianOperatingSubsidiaryMember"/>
    <label xlink:type="resource" xlink:label="label_CanadianOperatingSubsidiaryMember_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CanadianOperatingSubsidiaryMember" xml:lang="en-US" id="label_CanadianOperatingSubsidiaryMember_2">Restricted stock units granted to Canadian operating subsidiary</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CanadianOperatingSubsidiaryMember" xlink:to="label_CanadianOperatingSubsidiaryMember_2" xlink:title="label: CanadianOperatingSubsidiaryMember to label_CanadianOperatingSubsidiaryMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_UnitedKingdomSubsidiaryMember" xlink:label="UnitedKingdomSubsidiaryMember" xlink:title="UnitedKingdomSubsidiaryMember"/>
    <label xlink:type="resource" xlink:label="label_UnitedKingdomSubsidiaryMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_UnitedKingdomSubsidiaryMember" xml:lang="en-US" id="label_UnitedKingdomSubsidiaryMember">This element represents details pertaining to the entity's United Kingdom subsidiary.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UnitedKingdomSubsidiaryMember" xlink:to="label_UnitedKingdomSubsidiaryMember" xlink:title="label: UnitedKingdomSubsidiaryMember to label_UnitedKingdomSubsidiaryMember"/>
    <label xlink:type="resource" xlink:label="label_UnitedKingdomSubsidiaryMember_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_UnitedKingdomSubsidiaryMember" xml:lang="en-US" id="label_UnitedKingdomSubsidiaryMember_2">United Kingdom subsidiary</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UnitedKingdomSubsidiaryMember" xlink:to="label_UnitedKingdomSubsidiaryMember_2" xlink:title="label: UnitedKingdomSubsidiaryMember to label_UnitedKingdomSubsidiaryMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_StockIssuedDuringPeriodValueBenefitPlans" xlink:label="StockIssuedDuringPeriodValueBenefitPlans" xlink:title="StockIssuedDuringPeriodValueBenefitPlans"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodValueBenefitPlans" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StockIssuedDuringPeriodValueBenefitPlans" xml:lang="en-US" id="label_StockIssuedDuringPeriodValueBenefitPlans">Benefit plans</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodValueBenefitPlans" xlink:to="label_StockIssuedDuringPeriodValueBenefitPlans" xlink:title="label: StockIssuedDuringPeriodValueBenefitPlans to label_StockIssuedDuringPeriodValueBenefitPlans"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodValueBenefitPlans_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockIssuedDuringPeriodValueBenefitPlans" xml:lang="en-US" id="label_StockIssuedDuringPeriodValueBenefitPlans_2">Stock Issued During Period, Value, Benefit Plans</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodValueBenefitPlans" xlink:to="label_StockIssuedDuringPeriodValueBenefitPlans_2" xlink:title="label: StockIssuedDuringPeriodValueBenefitPlans to label_StockIssuedDuringPeriodValueBenefitPlans"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodValueBenefitPlans_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_StockIssuedDuringPeriodValueBenefitPlans" xml:lang="en-US" id="label_StockIssuedDuringPeriodValueBenefitPlans_3">Value of stock issued during the period related to option exercises, 401K matches, ESPP purchases and restricted stock activity.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodValueBenefitPlans" xlink:to="label_StockIssuedDuringPeriodValueBenefitPlans_3" xlink:title="label: StockIssuedDuringPeriodValueBenefitPlans to label_StockIssuedDuringPeriodValueBenefitPlans"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_StockIssuedDuringPeriodSharesBenefitPlans" xlink:label="StockIssuedDuringPeriodSharesBenefitPlans" xlink:title="StockIssuedDuringPeriodSharesBenefitPlans"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodSharesBenefitPlans" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockIssuedDuringPeriodSharesBenefitPlans" xml:lang="en-US" id="label_StockIssuedDuringPeriodSharesBenefitPlans">Stock Issued During Period, Shares, Benefit Plans</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodSharesBenefitPlans" xlink:to="label_StockIssuedDuringPeriodSharesBenefitPlans" xlink:title="label: StockIssuedDuringPeriodSharesBenefitPlans to label_StockIssuedDuringPeriodSharesBenefitPlans"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodSharesBenefitPlans_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StockIssuedDuringPeriodSharesBenefitPlans" xml:lang="en-US" id="label_StockIssuedDuringPeriodSharesBenefitPlans_2">Benefit plans (in shares)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodSharesBenefitPlans" xlink:to="label_StockIssuedDuringPeriodSharesBenefitPlans_2" xlink:title="label: StockIssuedDuringPeriodSharesBenefitPlans to label_StockIssuedDuringPeriodSharesBenefitPlans"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodSharesBenefitPlans_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_StockIssuedDuringPeriodSharesBenefitPlans" xml:lang="en-US" id="label_StockIssuedDuringPeriodSharesBenefitPlans_3">Number of shares issued during the period related to option exercises, 401K matches, ESPP purchases and restricted stock activity.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodSharesBenefitPlans" xlink:to="label_StockIssuedDuringPeriodSharesBenefitPlans_3" xlink:title="label: StockIssuedDuringPeriodSharesBenefitPlans to label_StockIssuedDuringPeriodSharesBenefitPlans"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ProceedsFromIssuanceOfSecuredDebtAndSaleOfFutureMilestonePayments" xlink:label="ProceedsFromIssuanceOfSecuredDebtAndSaleOfFutureMilestonePayments" xlink:title="ProceedsFromIssuanceOfSecuredDebtAndSaleOfFutureMilestonePayments"/>
    <label xlink:type="resource" xlink:label="label_ProceedsFromIssuanceOfSecuredDebtAndSaleOfFutureMilestonePayments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ProceedsFromIssuanceOfSecuredDebtAndSaleOfFutureMilestonePayments" xml:lang="en-US" id="label_ProceedsFromIssuanceOfSecuredDebtAndSaleOfFutureMilestonePayments">Issuance of secured notes (due 2012) and sale of potential future milestone payments, net</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromIssuanceOfSecuredDebtAndSaleOfFutureMilestonePayments" xlink:to="label_ProceedsFromIssuanceOfSecuredDebtAndSaleOfFutureMilestonePayments" xlink:title="label: ProceedsFromIssuanceOfSecuredDebtAndSaleOfFutureMilestonePayments to label_ProceedsFromIssuanceOfSecuredDebtAndSaleOfFutureMilestonePayments"/>
    <label xlink:type="resource" xlink:label="label_ProceedsFromIssuanceOfSecuredDebtAndSaleOfFutureMilestonePayments_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ProceedsFromIssuanceOfSecuredDebtAndSaleOfFutureMilestonePayments" xml:lang="en-US" id="label_ProceedsFromIssuanceOfSecuredDebtAndSaleOfFutureMilestonePayments_2">The cash inflow from the issuance of collateralized debt obligations (backed by pledge, mortgage or other lien in the entity's assets), as well as the sale of potential future milestone payments, net of any transaction costs.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromIssuanceOfSecuredDebtAndSaleOfFutureMilestonePayments" xlink:to="label_ProceedsFromIssuanceOfSecuredDebtAndSaleOfFutureMilestonePayments_2" xlink:title="label: ProceedsFromIssuanceOfSecuredDebtAndSaleOfFutureMilestonePayments to label_ProceedsFromIssuanceOfSecuredDebtAndSaleOfFutureMilestonePayments"/>
    <label xlink:type="resource" xlink:label="label_ProceedsFromIssuanceOfSecuredDebtAndSaleOfFutureMilestonePayments_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ProceedsFromIssuanceOfSecuredDebtAndSaleOfFutureMilestonePayments" xml:lang="en-US" id="label_ProceedsFromIssuanceOfSecuredDebtAndSaleOfFutureMilestonePayments_3">Proceeds from Issuance of Secured Debt and Sale of Future Milestone Payments</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromIssuanceOfSecuredDebtAndSaleOfFutureMilestonePayments" xlink:to="label_ProceedsFromIssuanceOfSecuredDebtAndSaleOfFutureMilestonePayments_3" xlink:title="label: ProceedsFromIssuanceOfSecuredDebtAndSaleOfFutureMilestonePayments to label_ProceedsFromIssuanceOfSecuredDebtAndSaleOfFutureMilestonePayments"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_PreferredStockCommonStockAndEquityPlansDisclosureTextBlock" xlink:label="PreferredStockCommonStockAndEquityPlansDisclosureTextBlock" xlink:title="PreferredStockCommonStockAndEquityPlansDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_PreferredStockCommonStockAndEquityPlansDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PreferredStockCommonStockAndEquityPlansDisclosureTextBlock" xml:lang="en-US" id="label_PreferredStockCommonStockAndEquityPlansDisclosureTextBlock">Preferred Stock, Common Stock and Equity Plans</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PreferredStockCommonStockAndEquityPlansDisclosureTextBlock" xlink:to="label_PreferredStockCommonStockAndEquityPlansDisclosureTextBlock" xlink:title="label: PreferredStockCommonStockAndEquityPlansDisclosureTextBlock to label_PreferredStockCommonStockAndEquityPlansDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_PreferredStockCommonStockAndEquityPlansDisclosureTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PreferredStockCommonStockAndEquityPlansDisclosureTextBlock" xml:lang="en-US" id="label_PreferredStockCommonStockAndEquityPlansDisclosureTextBlock_2">Preferred Stock, Common Stock, and Equity Plans Disclosure [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PreferredStockCommonStockAndEquityPlansDisclosureTextBlock" xlink:to="label_PreferredStockCommonStockAndEquityPlansDisclosureTextBlock_2" xlink:title="label: PreferredStockCommonStockAndEquityPlansDisclosureTextBlock to label_PreferredStockCommonStockAndEquityPlansDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_PreferredStockCommonStockAndEquityPlansDisclosureTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_PreferredStockCommonStockAndEquityPlansDisclosureTextBlock" xml:lang="en-US" id="label_PreferredStockCommonStockAndEquityPlansDisclosureTextBlock_3">Disclosures related to shares available for future issuance, descriptions of the stock and option plans, and the rights associated with each share.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PreferredStockCommonStockAndEquityPlansDisclosureTextBlock" xlink:to="label_PreferredStockCommonStockAndEquityPlansDisclosureTextBlock_3" xlink:title="label: PreferredStockCommonStockAndEquityPlansDisclosureTextBlock to label_PreferredStockCommonStockAndEquityPlansDisclosureTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_AccruedExpensesAndAccruedLiabilitiesCurrentDisclosureTextBlock" xlink:label="AccruedExpensesAndAccruedLiabilitiesCurrentDisclosureTextBlock" xlink:title="AccruedExpensesAndAccruedLiabilitiesCurrentDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_AccruedExpensesAndAccruedLiabilitiesCurrentDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AccruedExpensesAndAccruedLiabilitiesCurrentDisclosureTextBlock" xml:lang="en-US" id="label_AccruedExpensesAndAccruedLiabilitiesCurrentDisclosureTextBlock">Accrued Expenses and Accrued Liabilities, Current, Disclosure [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccruedExpensesAndAccruedLiabilitiesCurrentDisclosureTextBlock" xlink:to="label_AccruedExpensesAndAccruedLiabilitiesCurrentDisclosureTextBlock" xlink:title="label: AccruedExpensesAndAccruedLiabilitiesCurrentDisclosureTextBlock to label_AccruedExpensesAndAccruedLiabilitiesCurrentDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_AccruedExpensesAndAccruedLiabilitiesCurrentDisclosureTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AccruedExpensesAndAccruedLiabilitiesCurrentDisclosureTextBlock" xml:lang="en-US" id="label_AccruedExpensesAndAccruedLiabilitiesCurrentDisclosureTextBlock_2">Accrued Expenses and Other Current Liabilities and Other Obligations</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccruedExpensesAndAccruedLiabilitiesCurrentDisclosureTextBlock" xlink:to="label_AccruedExpensesAndAccruedLiabilitiesCurrentDisclosureTextBlock_2" xlink:title="label: AccruedExpensesAndAccruedLiabilitiesCurrentDisclosureTextBlock to label_AccruedExpensesAndAccruedLiabilitiesCurrentDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_AccruedExpensesAndAccruedLiabilitiesCurrentDisclosureTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_AccruedExpensesAndAccruedLiabilitiesCurrentDisclosureTextBlock" xml:lang="en-US" id="label_AccruedExpensesAndAccruedLiabilitiesCurrentDisclosureTextBlock_3">The entire disclosure for accrued expenses, other liabilities, and other obligations that are classified as current at the end of the reporting period.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccruedExpensesAndAccruedLiabilitiesCurrentDisclosureTextBlock" xlink:to="label_AccruedExpensesAndAccruedLiabilitiesCurrentDisclosureTextBlock_3" xlink:title="label: AccruedExpensesAndAccruedLiabilitiesCurrentDisclosureTextBlock to label_AccruedExpensesAndAccruedLiabilitiesCurrentDisclosureTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfRestructuringChargesPaymentsWriteoffsAndResultingLiabilityTextBlock" xlink:label="ScheduleOfRestructuringChargesPaymentsWriteoffsAndResultingLiabilityTextBlock" xlink:title="ScheduleOfRestructuringChargesPaymentsWriteoffsAndResultingLiabilityTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfRestructuringChargesPaymentsWriteoffsAndResultingLiabilityTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfRestructuringChargesPaymentsWriteoffsAndResultingLiabilityTextBlock" xml:lang="en-US" id="label_ScheduleOfRestructuringChargesPaymentsWriteoffsAndResultingLiabilityTextBlock">Schedule of Restructuring Charges, Payments, Write-offs, and Resulting Liability [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfRestructuringChargesPaymentsWriteoffsAndResultingLiabilityTextBlock" xlink:to="label_ScheduleOfRestructuringChargesPaymentsWriteoffsAndResultingLiabilityTextBlock" xlink:title="label: ScheduleOfRestructuringChargesPaymentsWriteoffsAndResultingLiabilityTextBlock to label_ScheduleOfRestructuringChargesPaymentsWriteoffsAndResultingLiabilityTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfRestructuringChargesPaymentsWriteoffsAndResultingLiabilityTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfRestructuringChargesPaymentsWriteoffsAndResultingLiabilityTextBlock" xml:lang="en-US" id="label_ScheduleOfRestructuringChargesPaymentsWriteoffsAndResultingLiabilityTextBlock_2">Restructuring and other liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfRestructuringChargesPaymentsWriteoffsAndResultingLiabilityTextBlock" xlink:to="label_ScheduleOfRestructuringChargesPaymentsWriteoffsAndResultingLiabilityTextBlock_2" xlink:title="label: ScheduleOfRestructuringChargesPaymentsWriteoffsAndResultingLiabilityTextBlock to label_ScheduleOfRestructuringChargesPaymentsWriteoffsAndResultingLiabilityTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfRestructuringChargesPaymentsWriteoffsAndResultingLiabilityTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfRestructuringChargesPaymentsWriteoffsAndResultingLiabilityTextBlock" xml:lang="en-US" id="label_ScheduleOfRestructuringChargesPaymentsWriteoffsAndResultingLiabilityTextBlock_3">Description and amount of restructuring costs by type of cost including the initial cost, cash payments made, non-cash write-offs, and the resulting liability at the end of the period when the restructuring occurred.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfRestructuringChargesPaymentsWriteoffsAndResultingLiabilityTextBlock" xlink:to="label_ScheduleOfRestructuringChargesPaymentsWriteoffsAndResultingLiabilityTextBlock_3" xlink:title="label: ScheduleOfRestructuringChargesPaymentsWriteoffsAndResultingLiabilityTextBlock to label_ScheduleOfRestructuringChargesPaymentsWriteoffsAndResultingLiabilityTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_OtherObligationsCurrentAbstract" xlink:label="OtherObligationsCurrentAbstract" xlink:title="OtherObligationsCurrentAbstract"/>
    <label xlink:type="resource" xlink:label="label_OtherObligationsCurrentAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OtherObligationsCurrentAbstract" xml:lang="en-US" id="label_OtherObligationsCurrentAbstract">Other current obligations</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherObligationsCurrentAbstract" xlink:to="label_OtherObligationsCurrentAbstract" xlink:title="label: OtherObligationsCurrentAbstract to label_OtherObligationsCurrentAbstract"/>
    <label xlink:type="resource" xlink:label="label_OtherObligationsCurrentAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OtherObligationsCurrentAbstract" xml:lang="en-US" id="label_OtherObligationsCurrentAbstract_2">Other Obligations, Current [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherObligationsCurrentAbstract" xlink:to="label_OtherObligationsCurrentAbstract_2" xlink:title="label: OtherObligationsCurrentAbstract to label_OtherObligationsCurrentAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_StockIssuedDuringPeriodSharesEmployeeBenefitPlan" xlink:label="StockIssuedDuringPeriodSharesEmployeeBenefitPlan" xlink:title="StockIssuedDuringPeriodSharesEmployeeBenefitPlan"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodSharesEmployeeBenefitPlan" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StockIssuedDuringPeriodSharesEmployeeBenefitPlan" xml:lang="en-US" id="label_StockIssuedDuringPeriodSharesEmployeeBenefitPlan">Shares issued during the year ended December 31</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodSharesEmployeeBenefitPlan" xlink:to="label_StockIssuedDuringPeriodSharesEmployeeBenefitPlan" xlink:title="label: StockIssuedDuringPeriodSharesEmployeeBenefitPlan to label_StockIssuedDuringPeriodSharesEmployeeBenefitPlan"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodSharesEmployeeBenefitPlan_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockIssuedDuringPeriodSharesEmployeeBenefitPlan" xml:lang="en-US" id="label_StockIssuedDuringPeriodSharesEmployeeBenefitPlan_2">Stock Issued During Period, Shares, Employee Benefit Plan</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodSharesEmployeeBenefitPlan" xlink:to="label_StockIssuedDuringPeriodSharesEmployeeBenefitPlan_2" xlink:title="label: StockIssuedDuringPeriodSharesEmployeeBenefitPlan to label_StockIssuedDuringPeriodSharesEmployeeBenefitPlan"/>
    <label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodSharesEmployeeBenefitPlan_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_StockIssuedDuringPeriodSharesEmployeeBenefitPlan" xml:lang="en-US" id="label_StockIssuedDuringPeriodSharesEmployeeBenefitPlan_3">Number of shares issued during the period to an employee benefit plan, such as a defined contribution or defined benefit plan.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodSharesEmployeeBenefitPlan" xlink:to="label_StockIssuedDuringPeriodSharesEmployeeBenefitPlan_3" xlink:title="label: StockIssuedDuringPeriodSharesEmployeeBenefitPlan to label_StockIssuedDuringPeriodSharesEmployeeBenefitPlan"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_StockIssuableAtPeriodEndUnder401KRetirementPlan" xlink:label="StockIssuableAtPeriodEndUnder401KRetirementPlan" xlink:title="StockIssuableAtPeriodEndUnder401KRetirementPlan"/>
    <label xlink:type="resource" xlink:label="label_StockIssuableAtPeriodEndUnder401KRetirementPlan" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockIssuableAtPeriodEndUnder401KRetirementPlan" xml:lang="en-US" id="label_StockIssuableAtPeriodEndUnder401KRetirementPlan">Stock Issuable at Period End Under 401 K Retirement Plan</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuableAtPeriodEndUnder401KRetirementPlan" xlink:to="label_StockIssuableAtPeriodEndUnder401KRetirementPlan" xlink:title="label: StockIssuableAtPeriodEndUnder401KRetirementPlan to label_StockIssuableAtPeriodEndUnder401KRetirementPlan"/>
    <label xlink:type="resource" xlink:label="label_StockIssuableAtPeriodEndUnder401KRetirementPlan_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StockIssuableAtPeriodEndUnder401KRetirementPlan" xml:lang="en-US" id="label_StockIssuableAtPeriodEndUnder401KRetirementPlan_2">Shares issuable as of the year ended December 31</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuableAtPeriodEndUnder401KRetirementPlan" xlink:to="label_StockIssuableAtPeriodEndUnder401KRetirementPlan_2" xlink:title="label: StockIssuableAtPeriodEndUnder401KRetirementPlan to label_StockIssuableAtPeriodEndUnder401KRetirementPlan"/>
    <label xlink:type="resource" xlink:label="label_StockIssuableAtPeriodEndUnder401KRetirementPlan_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_StockIssuableAtPeriodEndUnder401KRetirementPlan" xml:lang="en-US" id="label_StockIssuableAtPeriodEndUnder401KRetirementPlan_3">Represents shares issuable under 401(k) retirement plan as of period end.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuableAtPeriodEndUnder401KRetirementPlan" xlink:to="label_StockIssuableAtPeriodEndUnder401KRetirementPlan_3" xlink:title="label: StockIssuableAtPeriodEndUnder401KRetirementPlan to label_StockIssuableAtPeriodEndUnder401KRetirementPlan"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsAbstract" xlink:label="FutureMinimumSubleaseRentalsSaleLeasebackTransactionsAbstract" xlink:title="FutureMinimumSubleaseRentalsSaleLeasebackTransactionsAbstract"/>
    <label xlink:type="resource" xlink:label="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsAbstract_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsAbstract" xml:lang="en-US" id="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsAbstract_2">Future Minimum Sublease Rentals, Sale Leaseback Transactions [Abstract]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FutureMinimumSubleaseRentalsSaleLeasebackTransactionsAbstract" xlink:to="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsAbstract_2" xlink:title="label: FutureMinimumSubleaseRentalsSaleLeasebackTransactionsAbstract to label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsAbstract"/>
    <label xlink:type="resource" xlink:label="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsAbstract" xml:lang="en-US" id="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsAbstract">Future minimum sublease income</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FutureMinimumSubleaseRentalsSaleLeasebackTransactionsAbstract" xlink:to="label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsAbstract" xlink:title="label: FutureMinimumSubleaseRentalsSaleLeasebackTransactionsAbstract to label_FutureMinimumSubleaseRentalsSaleLeasebackTransactionsAbstract"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ConsolidationPolicyTextBlock" xlink:label="ConsolidationPolicyTextBlock" xlink:title="ConsolidationPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ConsolidationPolicyTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ConsolidationPolicyTextBlock" xml:lang="en-US" id="label_ConsolidationPolicyTextBlock_2">Consolidation, Policy [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConsolidationPolicyTextBlock" xlink:to="label_ConsolidationPolicyTextBlock_2" xlink:title="label: ConsolidationPolicyTextBlock to label_ConsolidationPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ConsolidationPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ConsolidationPolicyTextBlock" xml:lang="en-US" id="label_ConsolidationPolicyTextBlock">Basis of Presentation</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConsolidationPolicyTextBlock" xlink:to="label_ConsolidationPolicyTextBlock" xlink:title="label: ConsolidationPolicyTextBlock to label_ConsolidationPolicyTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_UseOfEstimatesPolicyTextBlock" xlink:label="UseOfEstimatesPolicyTextBlock" xlink:title="UseOfEstimatesPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_UseOfEstimatesPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_UseOfEstimatesPolicyTextBlock" xml:lang="en-US" id="label_UseOfEstimatesPolicyTextBlock">Use of Estimates [Policy Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UseOfEstimatesPolicyTextBlock" xlink:to="label_UseOfEstimatesPolicyTextBlock" xlink:title="label: UseOfEstimatesPolicyTextBlock to label_UseOfEstimatesPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_UseOfEstimatesPolicyTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_UseOfEstimatesPolicyTextBlock" xml:lang="en-US" id="label_UseOfEstimatesPolicyTextBlock_2">Use of Estimates</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UseOfEstimatesPolicyTextBlock" xlink:to="label_UseOfEstimatesPolicyTextBlock_2" xlink:title="label: UseOfEstimatesPolicyTextBlock to label_UseOfEstimatesPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_UseOfEstimatesPolicyTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_UseOfEstimatesPolicyTextBlock" xml:lang="en-US" id="label_UseOfEstimatesPolicyTextBlock_3">Disclosure of an entity's explanation that the preparation of financial statements in conformity with generally accepted accounting principles requires the use of management estimates. Estimates used in the determination of carrying amounts of assets or liabilities, or in disclosure of gain or loss contingencies should be disclosed if known information available prior to issuance of the financial statements indicates that both of these criteria are met: (1) It is at least reasonably possible that the estimate of the effect on the financial statements of a condition, situation, or set of circumstances that existed at the date of the financial statements will change in the near term (less than one year from the date of issuance) due to one or more future confirming events, and (2) The effect of the change would be material to the financial statements. The disclosure should indicate the nature of the uncertainty and include an indication that it is at least reasonably possible that a change in the estimate will occur in the near term. Disclosure of the factors that cause the estimate to be sensitive to change also is encouraged. Entities also may identify those areas that are subject to significant estimates.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UseOfEstimatesPolicyTextBlock" xlink:to="label_UseOfEstimatesPolicyTextBlock_3" xlink:title="label: UseOfEstimatesPolicyTextBlock to label_UseOfEstimatesPolicyTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_PreapprovalInventoryCapitalizationPolicyTextBlock" xlink:label="PreapprovalInventoryCapitalizationPolicyTextBlock" xlink:title="PreapprovalInventoryCapitalizationPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_PreapprovalInventoryCapitalizationPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PreapprovalInventoryCapitalizationPolicyTextBlock" xml:lang="en-US" id="label_PreapprovalInventoryCapitalizationPolicyTextBlock">Pre-approval Inventory Capitalization [Policy Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PreapprovalInventoryCapitalizationPolicyTextBlock" xlink:to="label_PreapprovalInventoryCapitalizationPolicyTextBlock" xlink:title="label: PreapprovalInventoryCapitalizationPolicyTextBlock to label_PreapprovalInventoryCapitalizationPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_PreapprovalInventoryCapitalizationPolicyTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PreapprovalInventoryCapitalizationPolicyTextBlock" xml:lang="en-US" id="label_PreapprovalInventoryCapitalizationPolicyTextBlock_2">Pre-approval Inventories</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PreapprovalInventoryCapitalizationPolicyTextBlock" xlink:to="label_PreapprovalInventoryCapitalizationPolicyTextBlock_2" xlink:title="label: PreapprovalInventoryCapitalizationPolicyTextBlock to label_PreapprovalInventoryCapitalizationPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_PreapprovalInventoryCapitalizationPolicyTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_PreapprovalInventoryCapitalizationPolicyTextBlock" xml:lang="en-US" id="label_PreapprovalInventoryCapitalizationPolicyTextBlock_3">Describes the entity's accounting policy for recording the cost of inventories produced prior to attaining regulatory approval to sell the product.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PreapprovalInventoryCapitalizationPolicyTextBlock" xlink:to="label_PreapprovalInventoryCapitalizationPolicyTextBlock_3" xlink:title="label: PreapprovalInventoryCapitalizationPolicyTextBlock to label_PreapprovalInventoryCapitalizationPolicyTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_RecentAccountingPronouncementsPolicyTextBlock" xlink:label="RecentAccountingPronouncementsPolicyTextBlock" xlink:title="RecentAccountingPronouncementsPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_RecentAccountingPronouncementsPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RecentAccountingPronouncementsPolicyTextBlock" xml:lang="en-US" id="label_RecentAccountingPronouncementsPolicyTextBlock">Recent Accounting Pronouncements [Policy Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RecentAccountingPronouncementsPolicyTextBlock" xlink:to="label_RecentAccountingPronouncementsPolicyTextBlock" xlink:title="label: RecentAccountingPronouncementsPolicyTextBlock to label_RecentAccountingPronouncementsPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_RecentAccountingPronouncementsPolicyTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RecentAccountingPronouncementsPolicyTextBlock" xml:lang="en-US" id="label_RecentAccountingPronouncementsPolicyTextBlock_2">Recent Accounting Pronouncements</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RecentAccountingPronouncementsPolicyTextBlock" xlink:to="label_RecentAccountingPronouncementsPolicyTextBlock_2" xlink:title="label: RecentAccountingPronouncementsPolicyTextBlock to label_RecentAccountingPronouncementsPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_RecentAccountingPronouncementsPolicyTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_RecentAccountingPronouncementsPolicyTextBlock" xml:lang="en-US" id="label_RecentAccountingPronouncementsPolicyTextBlock_3">For new accounting pronouncements or guidance that have been issued but not yet adopted, an entity's disclosure (1) describing the new pronouncement, the date that adoption is required and the date that the entity plans to adopt, if earlier; (2) discussion of the methods of adoption allowed by the pronouncement and the method expected to be utilized by the entity, if determined; and/or (3) discussion the impact that adoption of the pronouncement is expected to have on the financial statements of the entity, unless such impact is not known or reasonably estimable (in which case, a statement to that effect should be made).</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RecentAccountingPronouncementsPolicyTextBlock" xlink:to="label_RecentAccountingPronouncementsPolicyTextBlock_3" xlink:title="label: RecentAccountingPronouncementsPolicyTextBlock to label_RecentAccountingPronouncementsPolicyTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfShareBasedCompensationOptionPricingWeightedAverageAssumptionsStockOptionsTextBlock" xlink:label="ScheduleOfShareBasedCompensationOptionPricingWeightedAverageAssumptionsStockOptionsTextBlock" xlink:title="ScheduleOfShareBasedCompensationOptionPricingWeightedAverageAssumptionsStockOptionsTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfShareBasedCompensationOptionPricingWeightedAverageAssumptionsStockOptionsTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfShareBasedCompensationOptionPricingWeightedAverageAssumptionsStockOptionsTextBlock" xml:lang="en-US" id="label_ScheduleOfShareBasedCompensationOptionPricingWeightedAverageAssumptionsStockOptionsTextBlock_3">Schedule of Share-based Compensation, Option Pricing, Weighted-Average Assumptions, Stock Options [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfShareBasedCompensationOptionPricingWeightedAverageAssumptionsStockOptionsTextBlock" xlink:to="label_ScheduleOfShareBasedCompensationOptionPricingWeightedAverageAssumptionsStockOptionsTextBlock_3" xlink:title="label: ScheduleOfShareBasedCompensationOptionPricingWeightedAverageAssumptionsStockOptionsTextBlock to label_ScheduleOfShareBasedCompensationOptionPricingWeightedAverageAssumptionsStockOptionsTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfShareBasedCompensationOptionPricingWeightedAverageAssumptionsStockOptionsTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfShareBasedCompensationOptionPricingWeightedAverageAssumptionsStockOptionsTextBlock" xml:lang="en-US" id="label_ScheduleOfShareBasedCompensationOptionPricingWeightedAverageAssumptionsStockOptionsTextBlock">Stock option pricing, weighted-average assumptions</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfShareBasedCompensationOptionPricingWeightedAverageAssumptionsStockOptionsTextBlock" xlink:to="label_ScheduleOfShareBasedCompensationOptionPricingWeightedAverageAssumptionsStockOptionsTextBlock" xlink:title="label: ScheduleOfShareBasedCompensationOptionPricingWeightedAverageAssumptionsStockOptionsTextBlock to label_ScheduleOfShareBasedCompensationOptionPricingWeightedAverageAssumptionsStockOptionsTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfShareBasedCompensationOptionPricingWeightedAverageAssumptionsStockOptionsTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfShareBasedCompensationOptionPricingWeightedAverageAssumptionsStockOptionsTextBlock" xml:lang="en-US" id="label_ScheduleOfShareBasedCompensationOptionPricingWeightedAverageAssumptionsStockOptionsTextBlock_2">Disclosure of the entity's weighted-average assumptions used in the pricing of its stock options.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfShareBasedCompensationOptionPricingWeightedAverageAssumptionsStockOptionsTextBlock" xlink:to="label_ScheduleOfShareBasedCompensationOptionPricingWeightedAverageAssumptionsStockOptionsTextBlock_2" xlink:title="label: ScheduleOfShareBasedCompensationOptionPricingWeightedAverageAssumptionsStockOptionsTextBlock to label_ScheduleOfShareBasedCompensationOptionPricingWeightedAverageAssumptionsStockOptionsTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfShareBasedCompensationEmployeeStockPurchaseFairValueGrantPriceWeightedAverageAssumptionsTextBlock" xlink:label="ScheduleOfShareBasedCompensationEmployeeStockPurchaseFairValueGrantPriceWeightedAverageAssumptionsTextBlock" xlink:title="ScheduleOfShareBasedCompensationEmployeeStockPurchaseFairValueGrantPriceWeightedAverageAssumptionsTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfShareBasedCompensationEmployeeStockPurchaseFairValueGrantPriceWeightedAverageAssumptionsTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfShareBasedCompensationEmployeeStockPurchaseFairValueGrantPriceWeightedAverageAssumptionsTextBlock" xml:lang="en-US" id="label_ScheduleOfShareBasedCompensationEmployeeStockPurchaseFairValueGrantPriceWeightedAverageAssumptionsTextBlock">Schedule of Share-based Compensation, Employee Stock Purchase, Fair Value Grant Price, Weighted-Average Assumptions [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfShareBasedCompensationEmployeeStockPurchaseFairValueGrantPriceWeightedAverageAssumptionsTextBlock" xlink:to="label_ScheduleOfShareBasedCompensationEmployeeStockPurchaseFairValueGrantPriceWeightedAverageAssumptionsTextBlock" xlink:title="label: ScheduleOfShareBasedCompensationEmployeeStockPurchaseFairValueGrantPriceWeightedAverageAssumptionsTextBlock to label_ScheduleOfShareBasedCompensationEmployeeStockPurchaseFairValueGrantPriceWeightedAverageAssumptionsTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfShareBasedCompensationEmployeeStockPurchaseFairValueGrantPriceWeightedAverageAssumptionsTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfShareBasedCompensationEmployeeStockPurchaseFairValueGrantPriceWeightedAverageAssumptionsTextBlock" xml:lang="en-US" id="label_ScheduleOfShareBasedCompensationEmployeeStockPurchaseFairValueGrantPriceWeightedAverageAssumptionsTextBlock_2">ESPP grants, fair value pricing, weighted average assumptions</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfShareBasedCompensationEmployeeStockPurchaseFairValueGrantPriceWeightedAverageAssumptionsTextBlock" xlink:to="label_ScheduleOfShareBasedCompensationEmployeeStockPurchaseFairValueGrantPriceWeightedAverageAssumptionsTextBlock_2" xlink:title="label: ScheduleOfShareBasedCompensationEmployeeStockPurchaseFairValueGrantPriceWeightedAverageAssumptionsTextBlock to label_ScheduleOfShareBasedCompensationEmployeeStockPurchaseFairValueGrantPriceWeightedAverageAssumptionsTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfShareBasedCompensationEmployeeStockPurchaseFairValueGrantPriceWeightedAverageAssumptionsTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfShareBasedCompensationEmployeeStockPurchaseFairValueGrantPriceWeightedAverageAssumptionsTextBlock" xml:lang="en-US" id="label_ScheduleOfShareBasedCompensationEmployeeStockPurchaseFairValueGrantPriceWeightedAverageAssumptionsTextBlock_3">Disclosure of the entity's weighted-average assumptions used in the fair value pricing of stock grants related to the Company's ESPP.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfShareBasedCompensationEmployeeStockPurchaseFairValueGrantPriceWeightedAverageAssumptionsTextBlock" xlink:to="label_ScheduleOfShareBasedCompensationEmployeeStockPurchaseFairValueGrantPriceWeightedAverageAssumptionsTextBlock_3" xlink:title="label: ScheduleOfShareBasedCompensationEmployeeStockPurchaseFairValueGrantPriceWeightedAverageAssumptionsTextBlock to label_ScheduleOfShareBasedCompensationEmployeeStockPurchaseFairValueGrantPriceWeightedAverageAssumptionsTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="LineOfCreditFacilityMaximumBorrowingCapacity" xlink:title="LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <label xlink:type="resource" xlink:label="label_LineOfCreditFacilityMaximumBorrowingCapacity_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LineOfCreditFacilityMaximumBorrowingCapacity" xml:lang="en-US" id="label_LineOfCreditFacilityMaximumBorrowingCapacity_2">Line of Credit Facility, Maximum Borrowing Capacity</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LineOfCreditFacilityMaximumBorrowingCapacity" xlink:to="label_LineOfCreditFacilityMaximumBorrowingCapacity_2" xlink:title="label: LineOfCreditFacilityMaximumBorrowingCapacity to label_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <label xlink:type="resource" xlink:label="label_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LineOfCreditFacilityMaximumBorrowingCapacity" xml:lang="en-US" id="label_LineOfCreditFacilityMaximumBorrowingCapacity">Revolving credit facility</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LineOfCreditFacilityMaximumBorrowingCapacity" xlink:to="label_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:title="label: LineOfCreditFacilityMaximumBorrowingCapacity to label_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredTaxLiabilities" xlink:label="DeferredTaxLiabilities" xlink:title="DeferredTaxLiabilities"/>
    <label xlink:type="resource" xlink:label="label_DeferredTaxLiabilities_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DeferredTaxLiabilities" xml:lang="en-US" id="label_DeferredTaxLiabilities_2">Deferred Tax Liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredTaxLiabilities" xlink:to="label_DeferredTaxLiabilities_2" xlink:title="label: DeferredTaxLiabilities to label_DeferredTaxLiabilities"/>
    <label xlink:type="resource" xlink:label="label_DeferredTaxLiabilities" xlink:role="http://xbrl.us/us-gaap/role/label/negated" xlink:title="label_DeferredTaxLiabilities" xml:lang="en-US" id="label_DeferredTaxLiabilities">Net deferred tax liabilities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredTaxLiabilities" xlink:to="label_DeferredTaxLiabilities" xlink:title="label: DeferredTaxLiabilities to label_DeferredTaxLiabilities"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_USGovernmentSecuritiesAtCarryingValueMarketableSecurities" xlink:label="USGovernmentSecuritiesAtCarryingValueMarketableSecurities" xlink:title="USGovernmentSecuritiesAtCarryingValueMarketableSecurities"/>
    <label xlink:type="resource" xlink:label="label_USGovernmentSecuritiesAtCarryingValueMarketableSecurities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_USGovernmentSecuritiesAtCarryingValueMarketableSecurities" xml:lang="en-US" id="label_USGovernmentSecuritiesAtCarryingValueMarketableSecurities">U.S. Treasury securities marketable securities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="USGovernmentSecuritiesAtCarryingValueMarketableSecurities" xlink:to="label_USGovernmentSecuritiesAtCarryingValueMarketableSecurities" xlink:title="label: USGovernmentSecuritiesAtCarryingValueMarketableSecurities to label_USGovernmentSecuritiesAtCarryingValueMarketableSecurities"/>
    <label xlink:type="resource" xlink:label="label_USGovernmentSecuritiesAtCarryingValueMarketableSecurities_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_USGovernmentSecuritiesAtCarryingValueMarketableSecurities" xml:lang="en-US" id="label_USGovernmentSecuritiesAtCarryingValueMarketableSecurities_2">US Government Securities, at Carrying Value, Marketable Securities</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="USGovernmentSecuritiesAtCarryingValueMarketableSecurities" xlink:to="label_USGovernmentSecuritiesAtCarryingValueMarketableSecurities_2" xlink:title="label: USGovernmentSecuritiesAtCarryingValueMarketableSecurities to label_USGovernmentSecuritiesAtCarryingValueMarketableSecurities"/>
    <label xlink:type="resource" xlink:label="label_USGovernmentSecuritiesAtCarryingValueMarketableSecurities_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_USGovernmentSecuritiesAtCarryingValueMarketableSecurities" xml:lang="en-US" id="label_USGovernmentSecuritiesAtCarryingValueMarketableSecurities_3">Marketable security investments in Debt (bills, notes or bonds) that are issued by the government of the United States.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="USGovernmentSecuritiesAtCarryingValueMarketableSecurities" xlink:to="label_USGovernmentSecuritiesAtCarryingValueMarketableSecurities_3" xlink:title="label: USGovernmentSecuritiesAtCarryingValueMarketableSecurities to label_USGovernmentSecuritiesAtCarryingValueMarketableSecurities"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_InventoryNet" xlink:label="InventoryNet" xlink:title="InventoryNet"/>
    <label xlink:type="resource" xlink:label="label_InventoryNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InventoryNet" xml:lang="en-US" id="label_InventoryNet">Inventory, Net</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryNet" xlink:to="label_InventoryNet" xlink:title="label: InventoryNet to label_InventoryNet"/>
    <label xlink:type="resource" xlink:label="label_InventoryNet_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_InventoryNet" xml:lang="en-US" id="label_InventoryNet_2">Inventories</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryNet" xlink:to="label_InventoryNet_2" xlink:title="label: InventoryNet to label_InventoryNet"/>
    <label xlink:type="resource" xlink:label="label_InventoryNet_3" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_InventoryNet" xml:lang="en-US" id="label_InventoryNet_3">Total</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryNet" xlink:to="label_InventoryNet_3" xlink:title="label: InventoryNet to label_InventoryNet"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="IncreaseDecreaseInInventories" xlink:title="IncreaseDecreaseInInventories"/>
    <label xlink:type="resource" xlink:label="label_IncreaseDecreaseInInventories" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncreaseDecreaseInInventories" xml:lang="en-US" id="label_IncreaseDecreaseInInventories">Increase (Decrease) in Inventories</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInInventories" xlink:to="label_IncreaseDecreaseInInventories" xlink:title="label: IncreaseDecreaseInInventories to label_IncreaseDecreaseInInventories"/>
    <label xlink:type="resource" xlink:label="label_IncreaseDecreaseInInventories_2" xlink:role="http://xbrl.us/us-gaap/role/label/negated" xlink:title="label_IncreaseDecreaseInInventories" xml:lang="en-US" id="label_IncreaseDecreaseInInventories_2">Inventories</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInInventories" xlink:to="label_IncreaseDecreaseInInventories_2" xlink:title="label: IncreaseDecreaseInInventories to label_IncreaseDecreaseInInventories"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_InventoriesDisclosureAbstract" xlink:label="InventoriesDisclosureAbstract" xlink:title="InventoriesDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_InventoriesDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InventoriesDisclosureAbstract" xml:lang="en-US" id="label_InventoriesDisclosureAbstract">Inventories</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoriesDisclosureAbstract" xlink:to="label_InventoriesDisclosureAbstract" xlink:title="label: InventoriesDisclosureAbstract to label_InventoriesDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_InventoryDisclosureTextBlock" xlink:label="InventoryDisclosureTextBlock" xlink:title="InventoryDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_InventoryDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InventoryDisclosureTextBlock" xml:lang="en-US" id="label_InventoryDisclosureTextBlock">Inventory Disclosure [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryDisclosureTextBlock" xlink:to="label_InventoryDisclosureTextBlock" xlink:title="label: InventoryDisclosureTextBlock to label_InventoryDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_InventoryDisclosureTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_InventoryDisclosureTextBlock" xml:lang="en-US" id="label_InventoryDisclosureTextBlock_2">Inventories</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryDisclosureTextBlock" xlink:to="label_InventoryDisclosureTextBlock_2" xlink:title="label: InventoryDisclosureTextBlock to label_InventoryDisclosureTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ScheduleOfInventoryCurrentTableTextBlock" xlink:label="ScheduleOfInventoryCurrentTableTextBlock" xlink:title="ScheduleOfInventoryCurrentTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfInventoryCurrentTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfInventoryCurrentTableTextBlock" xml:lang="en-US" id="label_ScheduleOfInventoryCurrentTableTextBlock">Schedule of Inventory Current [Table Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfInventoryCurrentTableTextBlock" xlink:to="label_ScheduleOfInventoryCurrentTableTextBlock" xlink:title="label: ScheduleOfInventoryCurrentTableTextBlock to label_ScheduleOfInventoryCurrentTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfInventoryCurrentTableTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfInventoryCurrentTableTextBlock" xml:lang="en-US" id="label_ScheduleOfInventoryCurrentTableTextBlock_2">Inventories</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfInventoryCurrentTableTextBlock" xlink:to="label_ScheduleOfInventoryCurrentTableTextBlock_2" xlink:title="label: ScheduleOfInventoryCurrentTableTextBlock to label_ScheduleOfInventoryCurrentTableTextBlock"/>
    <label xlink:type="resource" xlink:label="label_ScheduleOfInventoryCurrentTableTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfInventoryCurrentTableTextBlock" xml:lang="en-US" id="label_ScheduleOfInventoryCurrentTableTextBlock_3">Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfInventoryCurrentTableTextBlock" xlink:to="label_ScheduleOfInventoryCurrentTableTextBlock_3" xlink:title="label: ScheduleOfInventoryCurrentTableTextBlock to label_ScheduleOfInventoryCurrentTableTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_InventoryRawMaterialsNetOfReserves" xlink:label="InventoryRawMaterialsNetOfReserves" xlink:title="InventoryRawMaterialsNetOfReserves"/>
    <label xlink:type="resource" xlink:label="label_InventoryRawMaterialsNetOfReserves_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InventoryRawMaterialsNetOfReserves" xml:lang="en-US" id="label_InventoryRawMaterialsNetOfReserves_2">Inventory, Raw Materials, Net of Reserves</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryRawMaterialsNetOfReserves" xlink:to="label_InventoryRawMaterialsNetOfReserves_2" xlink:title="label:InventoryRawMaterialsNetOfReserves to label_InventoryRawMaterialsNetOfReserves"/>
    <label xlink:type="resource" xlink:label="label_InventoryRawMaterialsNetOfReserves" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_InventoryRawMaterialsNetOfReserves" xml:lang="en-US" id="label_InventoryRawMaterialsNetOfReserves">Raw materials</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryRawMaterialsNetOfReserves" xlink:to="label_InventoryRawMaterialsNetOfReserves" xlink:title="label: InventoryRawMaterialsNetOfReserves to label_InventoryRawMaterialsNetOfReserves"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_InventoryWorkInProcessNetOfReserves" xlink:label="InventoryWorkInProcessNetOfReserves" xlink:title="InventoryWorkInProcessNetOfReserves"/>
    <label xlink:type="resource" xlink:label="label_InventoryWorkInProcessNetOfReserves_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InventoryWorkInProcessNetOfReserves" xml:lang="en-US" id="label_InventoryWorkInProcessNetOfReserves_2">Inventory, Work in Process, Net of Reserves</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryWorkInProcessNetOfReserves" xlink:to="label_InventoryWorkInProcessNetOfReserves_2" xlink:title="label:InventoryWorkInProcessNetOfReserves to label_InventoryWorkInProcessNetOfReserves"/>
    <label xlink:type="resource" xlink:label="label_InventoryWorkInProcessNetOfReserves" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_InventoryWorkInProcessNetOfReserves" xml:lang="en-US" id="label_InventoryWorkInProcessNetOfReserves">Work in process</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryWorkInProcessNetOfReserves" xlink:to="label_InventoryWorkInProcessNetOfReserves" xlink:title="label: InventoryWorkInProcessNetOfReserves to label_InventoryWorkInProcessNetOfReserves"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_InventoryFinishedGoodsNetOfReserves" xlink:label="InventoryFinishedGoodsNetOfReserves" xlink:title="InventoryFinishedGoodsNetOfReserves"/>
    <label xlink:type="resource" xlink:label="label_InventoryFinishedGoodsNetOfReserves_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InventoryFinishedGoodsNetOfReserves" xml:lang="en-US" id="label_InventoryFinishedGoodsNetOfReserves_2">Inventory, Finished Goods, Net of Reserves</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryFinishedGoodsNetOfReserves" xlink:to="label_InventoryFinishedGoodsNetOfReserves_2" xlink:title="label:InventoryFinishedGoodsNetOfReserves to label_InventoryFinishedGoodsNetOfReserves"/>
    <label xlink:type="resource" xlink:label="label_InventoryFinishedGoodsNetOfReserves" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_InventoryFinishedGoodsNetOfReserves" xml:lang="en-US" id="label_InventoryFinishedGoodsNetOfReserves">Finished goods</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryFinishedGoodsNetOfReserves" xlink:to="label_InventoryFinishedGoodsNetOfReserves" xlink:title="label: InventoryFinishedGoodsNetOfReserves to label_InventoryFinishedGoodsNetOfReserves"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ExercisePriceRangeFromDollars8.68ToDollars20.00Member" xlink:label="ExercisePriceRangeFromDollars8.68ToDollars20.00Member" xlink:title="ExercisePriceRangeFromDollars8.68ToDollars20.00Member"/>
    <label xlink:type="resource" xlink:label="label_ExercisePriceRangeFromDollars8.68ToDollars20.00Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ExercisePriceRangeFromDollars8.68ToDollars20.00Member" xml:lang="en-US" id="label_ExercisePriceRangeFromDollars8.68ToDollars20.00Member">Range of Exercise Prices, $8.68-$20.00</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExercisePriceRangeFromDollars8.68ToDollars20.00Member" xlink:to="label_ExercisePriceRangeFromDollars8.68ToDollars20.00Member" xlink:title="label: ExercisePriceRangeFromDollars8.68ToDollars20.00Member to label_ExercisePriceRangeFromDollars8.68ToDollars20.00Member"/>
    <label xlink:type="resource" xlink:label="label_ExercisePriceRangeFromDollars8.68ToDollars20.00Member_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ExercisePriceRangeFromDollars8.68ToDollars20.00Member" xml:lang="en-US" id="label_ExercisePriceRangeFromDollars8.68ToDollars20.00Member_2">Represents the range of exercise prices from $8.68 to $20.00 per share for the purpose of disclosing shares potentially issuable under outstanding stock options, as well as other option information.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExercisePriceRangeFromDollars8.68ToDollars20.00Member" xlink:to="label_ExercisePriceRangeFromDollars8.68ToDollars20.00Member_2" xlink:title="label: ExercisePriceRangeFromDollars8.68ToDollars20.00Member to label_ExercisePriceRangeFromDollars8.68ToDollars20.00Member"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ExercisePriceRangeFromDollars20.01ToDollars30.00Member" xlink:label="ExercisePriceRangeFromDollars20.01ToDollars30.00Member" xlink:title="ExercisePriceRangeFromDollars20.01ToDollars30.00Member"/>
    <label xlink:type="resource" xlink:label="label_ExercisePriceRangeFromDollars20.01ToDollars30.00Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ExercisePriceRangeFromDollars20.01ToDollars30.00Member" xml:lang="en-US" id="label_ExercisePriceRangeFromDollars20.01ToDollars30.00Member">Range of Exercise Prices, $20.01-$30.00</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExercisePriceRangeFromDollars20.01ToDollars30.00Member" xlink:to="label_ExercisePriceRangeFromDollars20.01ToDollars30.00Member" xlink:title="label: ExercisePriceRangeFromDollars20.01ToDollars30.00Member to label_ExercisePriceRangeFromDollars20.01ToDollars30.00Member"/>
    <label xlink:type="resource" xlink:label="label_ExercisePriceRangeFromDollars20.01ToDollars30.00Member_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ExercisePriceRangeFromDollars20.01ToDollars30.00Member" xml:lang="en-US" id="label_ExercisePriceRangeFromDollars20.01ToDollars30.00Member_2">Represents the range of exercise prices from $20.01 to $30.00 per share for the purpose of disclosing shares potentially issuable under outstanding stock options, as well as other option information.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExercisePriceRangeFromDollars20.01ToDollars30.00Member" xlink:to="label_ExercisePriceRangeFromDollars20.01ToDollars30.00Member_2" xlink:title="label: ExercisePriceRangeFromDollars20.01ToDollars30.00Member to label_ExercisePriceRangeFromDollars20.01ToDollars30.00Member"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ExercisePriceRangeFromDollars30.01ToDollars40.00Member" xlink:label="ExercisePriceRangeFromDollars30.01ToDollars40.00Member" xlink:title="ExercisePriceRangeFromDollars30.01ToDollars40.00Member"/>
    <label xlink:type="resource" xlink:label="label_ExercisePriceRangeFromDollars30.01ToDollars40.00Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ExercisePriceRangeFromDollars30.01ToDollars40.00Member" xml:lang="en-US" id="label_ExercisePriceRangeFromDollars30.01ToDollars40.00Member">Range of Exercise Prices, $30.01-$40.00</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExercisePriceRangeFromDollars30.01ToDollars40.00Member" xlink:to="label_ExercisePriceRangeFromDollars30.01ToDollars40.00Member" xlink:title="label: ExercisePriceRangeFromDollars30.01ToDollars40.00Member to label_ExercisePriceRangeFromDollars30.01ToDollars40.00Member"/>
    <label xlink:type="resource" xlink:label="label_ExercisePriceRangeFromDollars30.01ToDollars40.00Member_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ExercisePriceRangeFromDollars30.01ToDollars40.00Member" xml:lang="en-US" id="label_ExercisePriceRangeFromDollars30.01ToDollars40.00Member_2">Represents the range of exercise prices from $30.01 to $40.00 per share for the purpose of disclosing shares potentially issuable under outstanding stock options, as well as other option information.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExercisePriceRangeFromDollars30.01ToDollars40.00Member" xlink:to="label_ExercisePriceRangeFromDollars30.01ToDollars40.00Member_2" xlink:title="label: ExercisePriceRangeFromDollars30.01ToDollars40.00Member to label_ExercisePriceRangeFromDollars30.01ToDollars40.00Member"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ExercisePriceRangeFromDollars40.01ToDollars50.00Member" xlink:label="ExercisePriceRangeFromDollars40.01ToDollars50.00Member" xlink:title="ExercisePriceRangeFromDollars40.01ToDollars50.00Member"/>
    <label xlink:type="resource" xlink:label="label_ExercisePriceRangeFromDollars40.01ToDollars50.00Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ExercisePriceRangeFromDollars40.01ToDollars50.00Member" xml:lang="en-US" id="label_ExercisePriceRangeFromDollars40.01ToDollars50.00Member">Range of Exercise Prices, $40.01-$50.00</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExercisePriceRangeFromDollars40.01ToDollars50.00Member" xlink:to="label_ExercisePriceRangeFromDollars40.01ToDollars50.00Member" xlink:title="label: ExercisePriceRangeFromDollars40.01ToDollars50.00Member to label_ExercisePriceRangeFromDollars40.01ToDollars50.00Member"/>
    <label xlink:type="resource" xlink:label="label_ExercisePriceRangeFromDollars40.01ToDollars50.00Member_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ExercisePriceRangeFromDollars40.01ToDollars50.00Member" xml:lang="en-US" id="label_ExercisePriceRangeFromDollars40.01ToDollars50.00Member_2">Represents the range of exercise prices from $40.01 to $50.00 per share for the purpose of disclosing shares potentially issuable under outstanding stock options, as well as other option information.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExercisePriceRangeFromDollars40.01ToDollars50.00Member" xlink:to="label_ExercisePriceRangeFromDollars40.01ToDollars50.00Member_2" xlink:title="label: ExercisePriceRangeFromDollars40.01ToDollars50.00Member to label_ExercisePriceRangeFromDollars40.01ToDollars50.00Member"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ExercisePriceRangeFromDollars50.01ToDollars50.51Member" xlink:label="ExercisePriceRangeFromDollars50.01ToDollars50.51Member" xlink:title="ExercisePriceRangeFromDollars50.01ToDollars50.51Member"/>
    <label xlink:type="resource" xlink:label="label_ExercisePriceRangeFromDollars50.01ToDollars50.51Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ExercisePriceRangeFromDollars50.01ToDollars50.51Member" xml:lang="en-US" id="label_ExercisePriceRangeFromDollars50.01ToDollars50.51Member">Range of Exercise Prices, $50.01-$50.51</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExercisePriceRangeFromDollars50.01ToDollars50.51Member" xlink:to="label_ExercisePriceRangeFromDollars50.01ToDollars50.51Member" xlink:title="label: ExercisePriceRangeFromDollars50.01ToDollars50.51Member to label_ExercisePriceRangeFromDollars50.01ToDollars50.51Member"/>
    <label xlink:type="resource" xlink:label="label_ExercisePriceRangeFromDollars50.01ToDollars50.51Member_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ExercisePriceRangeFromDollars50.01ToDollars50.51Member" xml:lang="en-US" id="label_ExercisePriceRangeFromDollars50.01ToDollars50.51Member_2">Represents the range of exercise prices from $50.01 to $50.51 per share for the purpose of disclosing shares potentially issuable under outstanding stock options, as well as other option information.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExercisePriceRangeFromDollars50.01ToDollars50.51Member" xlink:to="label_ExercisePriceRangeFromDollars50.01ToDollars50.51Member_2" xlink:title="label: ExercisePriceRangeFromDollars50.01ToDollars50.51Member to label_ExercisePriceRangeFromDollars50.01ToDollars50.51Member"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ExtinguishmentOfDebtAmount" xlink:label="ExtinguishmentOfDebtAmount" xlink:title="ExtinguishmentOfDebtAmount"/>
    <label xlink:type="resource" xlink:label="label_ExtinguishmentOfDebtAmount_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ExtinguishmentOfDebtAmount" xml:lang="en-US" id="label_ExtinguishmentOfDebtAmount_2">Extinguishment of Debt, Amount</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExtinguishmentOfDebtAmount" xlink:to="label_ExtinguishmentOfDebtAmount_2" xlink:title="label:ExtinguishmentOfDebtAmount to label_ExtinguishmentOfDebtAmount"/>
    <label xlink:type="resource" xlink:label="label_ExtinguishmentOfDebtAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ExtinguishmentOfDebtAmount" xml:lang="en-US" id="label_ExtinguishmentOfDebtAmount">Redemption of a portion of the 2012 Notes</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExtinguishmentOfDebtAmount" xlink:to="label_ExtinguishmentOfDebtAmount" xlink:title="label: ExtinguishmentOfDebtAmount to label_ExtinguishmentOfDebtAmount"/>
    <label xlink:type="resource" xlink:label="label_ExtinguishmentOfDebtAmount_3" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_ExtinguishmentOfDebtAmount" xml:lang="en-US" id="label_ExtinguishmentOfDebtAmount_3">Redemption of 2012 Notes</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExtinguishmentOfDebtAmount" xlink:to="label_ExtinguishmentOfDebtAmount_3" xlink:title="label: ExtinguishmentOfDebtAmount to label_ExtinguishmentOfDebtAmount"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_ProceedsFromMilestonePayment" xlink:label="ProceedsFromMilestonePayment" xlink:title="ProceedsFromMilestonePayment"/>
    <label xlink:type="resource" xlink:label="label_ProceedsFromMilestonePayment" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ProceedsFromMilestonePayment" xml:lang="en-US" id="label_ProceedsFromMilestonePayment">Proceeds from Milestone Payment</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromMilestonePayment" xlink:to="label_ProceedsFromMilestonePayment" xlink:title="label: ProceedsFromMilestonePayment to label_ProceedsFromMilestonePayment"/>
    <label xlink:type="resource" xlink:label="label_ProceedsFromMilestonePayment_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ProceedsFromMilestonePayment" xml:lang="en-US" id="label_ProceedsFromMilestonePayment_2">Proceeds from milestone payment related to the acceptance of Janssen's MAA</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromMilestonePayment" xlink:to="label_ProceedsFromMilestonePayment_2" xlink:title="label: ProceedsFromMilestonePayment to label_ProceedsFromMilestonePayment"/>
    <label xlink:type="resource" xlink:label="label_ProceedsFromMilestonePayment_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ProceedsFromMilestonePayment" xml:lang="en-US" id="label_ProceedsFromMilestonePayment_3">Represents the proceeds from milestone payment related to the acceptance of Janssen's marketing authorization application.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromMilestonePayment" xlink:to="label_ProceedsFromMilestonePayment_3" xlink:title="label: ProceedsFromMilestonePayment to label_ProceedsFromMilestonePayment"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_InventoryPolicyTextBlock" xlink:label="InventoryPolicyTextBlock" xlink:title="InventoryPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_InventoryPolicyTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InventoryPolicyTextBlock" xml:lang="en-US" id="label_InventoryPolicyTextBlock_2">Inventory, Policy [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryPolicyTextBlock" xlink:to="label_InventoryPolicyTextBlock_2" xlink:title="label:InventoryPolicyTextBlock to label_InventoryPolicyTextBlock"/>
    <label xlink:type="resource" xlink:label="label_InventoryPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_InventoryPolicyTextBlock" xml:lang="en-US" id="label_InventoryPolicyTextBlock">Inventories</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryPolicyTextBlock" xlink:to="label_InventoryPolicyTextBlock" xlink:title="label: InventoryPolicyTextBlock to label_InventoryPolicyTextBlock"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CreditAgreementDisclosureAbstract" xlink:label="CreditAgreementDisclosureAbstract" xlink:title="CreditAgreementDisclosureAbstract"/>
    <label xlink:type="resource" xlink:label="label_CreditAgreementDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CreditAgreementDisclosureAbstract" xml:lang="en-US" id="label_CreditAgreementDisclosureAbstract">Credit Agreement</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CreditAgreementDisclosureAbstract" xlink:to="label_CreditAgreementDisclosureAbstract" xlink:title="label: CreditAgreementDisclosureAbstract to label_CreditAgreementDisclosureAbstract"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CreditAgreementDisclosureTextBlock" xlink:label="CreditAgreementDisclosureTextBlock" xlink:title="CreditAgreementDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_CreditAgreementDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CreditAgreementDisclosureTextBlock" xml:lang="en-US" id="label_CreditAgreementDisclosureTextBlock">Credit Agreement</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CreditAgreementDisclosureTextBlock" xlink:to="label_CreditAgreementDisclosureTextBlock" xlink:title="label: CreditAgreementDisclosureTextBlock to label_CreditAgreementDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_CreditAgreementDisclosureTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CreditAgreementDisclosureTextBlock" xml:lang="en-US" id="label_CreditAgreementDisclosureTextBlock_2">This element represent Credit Agreement.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CreditAgreementDisclosureTextBlock" xlink:to="label_CreditAgreementDisclosureTextBlock_2" xlink:title="label: CreditAgreementDisclosureTextBlock to label_CreditAgreementDisclosureTextBlock"/>
    <label xlink:type="resource" xlink:label="label_CreditAgreementDisclosureTextBlock_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CreditAgreementDisclosureTextBlock" xml:lang="en-US" id="label_CreditAgreementDisclosureTextBlock_3">Credit Agreement Disclosure [Text Block]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CreditAgreementDisclosureTextBlock" xlink:to="label_CreditAgreementDisclosureTextBlock_3" xlink:title="label: CreditAgreementDisclosureTextBlock to label_CreditAgreementDisclosureTextBlock"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_NewContractMember" xlink:label="NewContractMember" xlink:title="NewContractMember"/>
    <label xlink:type="resource" xlink:label="label_NewContractMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NewContractMember" xml:lang="en-US" id="label_NewContractMember">Lease agreement</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NewContractMember" xlink:to="label_NewContractMember" xlink:title="label: NewContractMember to label_NewContractMember"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_SquareFootageOfLeaseProperty" xlink:label="SquareFootageOfLeaseProperty" xlink:title="SquareFootageOfLeaseProperty"/>
    <label xlink:type="resource" xlink:label="label_SquareFootageOfLeaseProperty" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SquareFootageOfLeaseProperty" xml:lang="en-US" id="label_SquareFootageOfLeaseProperty">Area of lease property (in square feet)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SquareFootageOfLeaseProperty" xlink:to="label_SquareFootageOfLeaseProperty" xlink:title="label: SquareFootageOfLeaseProperty to label_SquareFootageOfLeaseProperty"/>
    <label xlink:type="resource" xlink:label="label_SquareFootageOfLeaseProperty_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SquareFootageOfLeaseProperty" xml:lang="en-US" id="label_SquareFootageOfLeaseProperty_2">Square Footage of Lease Property</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SquareFootageOfLeaseProperty" xlink:to="label_SquareFootageOfLeaseProperty_2" xlink:title="label: SquareFootageOfLeaseProperty to label_SquareFootageOfLeaseProperty"/>
    <label xlink:type="resource" xlink:label="label_SquareFootageOfLeaseProperty_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_SquareFootageOfLeaseProperty" xml:lang="en-US" id="label_SquareFootageOfLeaseProperty_3">The amount of area of square footage related to the lease property.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SquareFootageOfLeaseProperty" xlink:to="label_SquareFootageOfLeaseProperty_3" xlink:title="label: SquareFootageOfLeaseProperty to label_SquareFootageOfLeaseProperty"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_LeaseAgreementNumberOfBuildings" xlink:label="LeaseAgreementNumberOfBuildings" xlink:title="LeaseAgreementNumberOfBuildings"/>
    <label xlink:type="resource" xlink:label="label_LeaseAgreementNumberOfBuildings" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LeaseAgreementNumberOfBuildings" xml:lang="en-US" id="label_LeaseAgreementNumberOfBuildings">Number of buildings under lease agreement</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeaseAgreementNumberOfBuildings" xlink:to="label_LeaseAgreementNumberOfBuildings" xlink:title="label: LeaseAgreementNumberOfBuildings to label_LeaseAgreementNumberOfBuildings"/>
    <label xlink:type="resource" xlink:label="label_LeaseAgreementNumberOfBuildings_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LeaseAgreementNumberOfBuildings" xml:lang="en-US" id="label_LeaseAgreementNumberOfBuildings_2">Lease Agreement Number of Buildings</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeaseAgreementNumberOfBuildings" xlink:to="label_LeaseAgreementNumberOfBuildings_2" xlink:title="label: LeaseAgreementNumberOfBuildings to label_LeaseAgreementNumberOfBuildings"/>
    <label xlink:type="resource" xlink:label="label_LeaseAgreementNumberOfBuildings_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_LeaseAgreementNumberOfBuildings" xml:lang="en-US" id="label_LeaseAgreementNumberOfBuildings_3">Represents number of building under lease agreement.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeaseAgreementNumberOfBuildings" xlink:to="label_LeaseAgreementNumberOfBuildings_3" xlink:title="label: LeaseAgreementNumberOfBuildings to label_LeaseAgreementNumberOfBuildings"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_TermOfLeaseAgreement" xlink:label="TermOfLeaseAgreement" xlink:title="TermOfLeaseAgreement"/>
    <label xlink:type="resource" xlink:label="label_TermOfLeaseAgreement" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_TermOfLeaseAgreement" xml:lang="en-US" id="label_TermOfLeaseAgreement">Term of Lease Agreement</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TermOfLeaseAgreement" xlink:to="label_TermOfLeaseAgreement" xlink:title="label: TermOfLeaseAgreement to label_TermOfLeaseAgreement"/>
    <label xlink:type="resource" xlink:label="label_TermOfLeaseAgreement_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_TermOfLeaseAgreement" xml:lang="en-US" id="label_TermOfLeaseAgreement_2">Initial term of lease agreement (in years)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TermOfLeaseAgreement" xlink:to="label_TermOfLeaseAgreement_2" xlink:title="label: TermOfLeaseAgreement to label_TermOfLeaseAgreement"/>
    <label xlink:type="resource" xlink:label="label_TermOfLeaseAgreement_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_TermOfLeaseAgreement" xml:lang="en-US" id="label_TermOfLeaseAgreement_3">Represents initial period term of lease agreement.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TermOfLeaseAgreement" xlink:to="label_TermOfLeaseAgreement_3" xlink:title="label: TermOfLeaseAgreement to label_TermOfLeaseAgreement"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_LeasesRentExpenseExcludingOperatingExpenses" xlink:label="LeasesRentExpenseExcludingOperatingExpenses" xlink:title="LeasesRentExpenseExcludingOperatingExpenses"/>
    <label xlink:type="resource" xlink:label="label_LeasesRentExpenseExcludingOperatingExpenses" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LeasesRentExpenseExcludingOperatingExpenses" xml:lang="en-US" id="label_LeasesRentExpenseExcludingOperatingExpenses">Leases Rent Expense Excluding Operating Expenses</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeasesRentExpenseExcludingOperatingExpenses" xlink:to="label_LeasesRentExpenseExcludingOperatingExpenses" xlink:title="label: LeasesRentExpenseExcludingOperatingExpenses to label_LeasesRentExpenseExcludingOperatingExpenses"/>
    <label xlink:type="resource" xlink:label="label_LeasesRentExpenseExcludingOperatingExpenses_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LeasesRentExpenseExcludingOperatingExpenses" xml:lang="en-US" id="label_LeasesRentExpenseExcludingOperatingExpenses_2">Aggregate rent payment exclusive of operating expenses under lease</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeasesRentExpenseExcludingOperatingExpenses" xlink:to="label_LeasesRentExpenseExcludingOperatingExpenses_2" xlink:title="label: LeasesRentExpenseExcludingOperatingExpenses to label_LeasesRentExpenseExcludingOperatingExpenses"/>
    <label xlink:type="resource" xlink:label="label_LeasesRentExpenseExcludingOperatingExpenses_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_LeasesRentExpenseExcludingOperatingExpenses" xml:lang="en-US" id="label_LeasesRentExpenseExcludingOperatingExpenses_3">Represents the additional term of lease agreement to include the aggregate rent per year in the initial term.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeasesRentExpenseExcludingOperatingExpenses" xlink:to="label_LeasesRentExpenseExcludingOperatingExpenses_3" xlink:title="label: LeasesRentExpenseExcludingOperatingExpenses to label_LeasesRentExpenseExcludingOperatingExpenses"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_AdditionalTermOfLeaseAgreement" xlink:label="AdditionalTermOfLeaseAgreement" xlink:title="AdditionalTermOfLeaseAgreement"/>
    <label xlink:type="resource" xlink:label="label_AdditionalTermOfLeaseAgreement" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AdditionalTermOfLeaseAgreement" xml:lang="en-US" id="label_AdditionalTermOfLeaseAgreement">Additional Term of Lease Agreement</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AdditionalTermOfLeaseAgreement" xlink:to="label_AdditionalTermOfLeaseAgreement" xlink:title="label: AdditionalTermOfLeaseAgreement to label_AdditionalTermOfLeaseAgreement"/>
    <label xlink:type="resource" xlink:label="label_AdditionalTermOfLeaseAgreement_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AdditionalTermOfLeaseAgreement" xml:lang="en-US" id="label_AdditionalTermOfLeaseAgreement_2">Additional term of lease agreement (in years)</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AdditionalTermOfLeaseAgreement" xlink:to="label_AdditionalTermOfLeaseAgreement_2" xlink:title="label: AdditionalTermOfLeaseAgreement to label_AdditionalTermOfLeaseAgreement"/>
    <label xlink:type="resource" xlink:label="label_AdditionalTermOfLeaseAgreement_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_AdditionalTermOfLeaseAgreement" xml:lang="en-US" id="label_AdditionalTermOfLeaseAgreement_3">Represents additional period term of lease agreement.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AdditionalTermOfLeaseAgreement" xlink:to="label_AdditionalTermOfLeaseAgreement_3" xlink:title="label: AdditionalTermOfLeaseAgreement to label_AdditionalTermOfLeaseAgreement"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_LineOfCreditFacilityTable" xlink:label="LineOfCreditFacilityTable" xlink:title="LineOfCreditFacilityTable"/>
    <label xlink:type="resource" xlink:label="label_LineOfCreditFacilityTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LineOfCreditFacilityTable" xml:lang="en-US" id="label_LineOfCreditFacilityTable">Line of Credit Facility [Table]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LineOfCreditFacilityTable" xlink:to="label_LineOfCreditFacilityTable" xlink:title="label: LineOfCreditFacilityTable to label_LineOfCreditFacilityTable"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_LineOfCreditFacilityAxis" xlink:label="LineOfCreditFacilityAxis" xlink:title="LineOfCreditFacilityAxis"/>
    <label xlink:type="resource" xlink:label="label_LineOfCreditFacilityAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LineOfCreditFacilityAxis" xml:lang="en-US" id="label_LineOfCreditFacilityAxis">Line of Credit Facility [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LineOfCreditFacilityAxis" xlink:to="label_LineOfCreditFacilityAxis" xlink:title="label: LineOfCreditFacilityAxis to label_LineOfCreditFacilityAxis"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_LineOfCreditFacilityLenderDomain" xlink:label="LineOfCreditFacilityLenderDomain" xlink:title="LineOfCreditFacilityLenderDomain"/>
    <label xlink:type="resource" xlink:label="label_LineOfCreditFacilityLenderDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LineOfCreditFacilityLenderDomain" xml:lang="en-US" id="label_LineOfCreditFacilityLenderDomain">Line of Credit Facility Lender [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LineOfCreditFacilityLenderDomain" xlink:to="label_LineOfCreditFacilityLenderDomain" xlink:title="label: LineOfCreditFacilityLenderDomain to label_LineOfCreditFacilityLenderDomain"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_BankOfAmericaMember" xlink:label="BankOfAmericaMember" xlink:title="BankOfAmericaMember"/>
    <label xlink:type="resource" xlink:label="label_BankOfAmericaMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BankOfAmericaMember" xml:lang="en-US" id="label_BankOfAmericaMember">Bank of America</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BankOfAmericaMember" xlink:to="label_BankOfAmericaMember" xlink:title="label: BankOfAmericaMember to label_BankOfAmericaMember"/>
    <label xlink:type="resource" xlink:label="label_BankOfAmericaMember_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_BankOfAmericaMember" xml:lang="en-US" id="label_BankOfAmericaMember_2">Represents the information pertaining to Bank of America.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BankOfAmericaMember" xlink:to="label_BankOfAmericaMember_2" xlink:title="label: BankOfAmericaMember to label_BankOfAmericaMember"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_LineOfCreditFacilityLineItems" xlink:label="LineOfCreditFacilityLineItems" xlink:title="LineOfCreditFacilityLineItems"/>
    <label xlink:type="resource" xlink:label="label_LineOfCreditFacilityLineItems_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LineOfCreditFacilityLineItems" xml:lang="en-US" id="label_LineOfCreditFacilityLineItems_2">Line of Credit Facility [Line Items]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LineOfCreditFacilityLineItems" xlink:to="label_LineOfCreditFacilityLineItems_2" xlink:title="label:LineOfCreditFacilityLineItems to label_LineOfCreditFacilityLineItems"/>
    <label xlink:type="resource" xlink:label="label_LineOfCreditFacilityLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LineOfCreditFacilityLineItems" xml:lang="en-US" id="label_LineOfCreditFacilityLineItems">Line of credit facility</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LineOfCreditFacilityLineItems" xlink:to="label_LineOfCreditFacilityLineItems" xlink:title="label: LineOfCreditFacilityLineItems to label_LineOfCreditFacilityLineItems"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_LongTermDebt" xlink:label="LongTermDebt" xlink:title="LongTermDebt"/>
    <label xlink:type="resource" xlink:label="label_LongTermDebt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LongTermDebt" xml:lang="en-US" id="label_LongTermDebt">Outstanding aggregate amount of 2012 Notes</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebt" xlink:to="label_LongTermDebt" xlink:title="label: LongTermDebt to label_LongTermDebt"/>
    <label xlink:type="resource" xlink:label="label_LongTermDebt_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LongTermDebt" xml:lang="en-US" id="label_LongTermDebt_2">Long Term Debt</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebt" xlink:to="label_LongTermDebt_2" xlink:title="label: LongTermDebt to label_LongTermDebt"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount" xlink:label="EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount" xlink:title="EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount"/>
    <label xlink:type="resource" xlink:label="label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount" xml:lang="en-US" id="label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount">Capitalization of stock-based compensation expense to inventory</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount" xlink:to="label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount" xlink:title="label: EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount to label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount"/>
    <label xlink:type="resource" xlink:label="label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount_2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount" xml:lang="en-US" id="label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount_2">Less stock-based compensation expense capitalized to inventory</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount" xlink:to="label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount_2" xlink:title="label: EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount to label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount"/>
    <label xlink:type="resource" xlink:label="label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount" xml:lang="en-US" id="label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount_3">Employee Service Share Based Compensation Allocation of Recognized Period Costs Capitalized Amount</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount" xlink:to="label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount_3" xlink:title="label: EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount to label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_DevelopmentMilestoneRevenues" xlink:label="DevelopmentMilestoneRevenues" xlink:title="DevelopmentMilestoneRevenues"/>
    <label xlink:type="resource" xlink:label="label_DevelopmentMilestoneRevenues" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DevelopmentMilestoneRevenues" xml:lang="en-US" id="label_DevelopmentMilestoneRevenues">Development milestone revenues</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DevelopmentMilestoneRevenues" xlink:to="label_DevelopmentMilestoneRevenues" xlink:title="label: DevelopmentMilestoneRevenues to label_DevelopmentMilestoneRevenues"/>
    <label xlink:type="resource" xlink:label="label_DevelopmentMilestoneRevenues_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DevelopmentMilestoneRevenues" xml:lang="en-US" id="label_DevelopmentMilestoneRevenues_2">This element represents the revenues recorded for milestone payments received.</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DevelopmentMilestoneRevenues" xlink:to="label_DevelopmentMilestoneRevenues_2" xlink:title="label: DevelopmentMilestoneRevenues to label_DevelopmentMilestoneRevenues"/>
    <label xlink:type="resource" xlink:label="label_DevelopmentMilestoneRevenues_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DevelopmentMilestoneRevenues" xml:lang="en-US" id="label_DevelopmentMilestoneRevenues_3">Development Milestone Revenues</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DevelopmentMilestoneRevenues" xlink:to="label_DevelopmentMilestoneRevenues_3" xlink:title="label: DevelopmentMilestoneRevenues to label_DevelopmentMilestoneRevenues"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_InterestExpenseDebt" xlink:label="InterestExpenseDebt" xlink:title="InterestExpenseDebt"/>
    <label xlink:type="resource" xlink:label="label_InterestExpenseDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InterestExpenseDebt" xml:lang="en-US" id="label_InterestExpenseDebt">Interest Expense Debt</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InterestExpenseDebt" xlink:to="label_InterestExpenseDebt" xlink:title="label: InterestExpenseDebt to label_InterestExpenseDebt"/>
    <label xlink:type="resource" xlink:label="label_InterestExpenseDebt_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_InterestExpenseDebt" xml:lang="en-US" id="label_InterestExpenseDebt_2">Interest expense related to 2012 Notes</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InterestExpenseDebt" xlink:to="label_InterestExpenseDebt_2" xlink:title="label: InterestExpenseDebt to label_InterestExpenseDebt"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/non-gaap/dei-2009-01-31.xsd#dei_AmendmentDescription" xlink:label="AmendmentDescription" xlink:title="AmendmentDescription"/>
    <label xlink:type="resource" xlink:label="label_AmendmentDescription" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AmendmentDescription" xml:lang="en-US" id="label_AmendmentDescription">Amendment Description</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmendmentDescription" xlink:to="label_AmendmentDescription" xlink:title="label: AmendmentDescription to label_AmendmentDescription"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/non-gaap/dei-2009-01-31.xsd#dei_AmendmentFlag" xlink:label="AmendmentFlag" xlink:title="AmendmentFlag"/>
    <label xlink:type="resource" xlink:label="label_AmendmentFlag" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AmendmentFlag" xml:lang="en-US" id="label_AmendmentFlag">Amendment Flag</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmendmentFlag" xlink:to="label_AmendmentFlag" xlink:title="label: AmendmentFlag to label_AmendmentFlag"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/non-gaap/dei-2009-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:label="CurrentFiscalYearEndDate" xlink:title="CurrentFiscalYearEndDate"/>
    <label xlink:type="resource" xlink:label="label_CurrentFiscalYearEndDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CurrentFiscalYearEndDate" xml:lang="en-US" id="label_CurrentFiscalYearEndDate">Current Fiscal Year End Date</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CurrentFiscalYearEndDate" xlink:to="label_CurrentFiscalYearEndDate" xlink:title="label: CurrentFiscalYearEndDate to label_CurrentFiscalYearEndDate"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/non-gaap/dei-2009-01-31.xsd#dei_DocumentPeriodEndDate" xlink:label="DocumentPeriodEndDate" xlink:title="DocumentPeriodEndDate"/>
    <label xlink:type="resource" xlink:label="label_DocumentPeriodEndDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DocumentPeriodEndDate" xml:lang="en-US" id="label_DocumentPeriodEndDate">Document Period End Date</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DocumentPeriodEndDate" xlink:to="label_DocumentPeriodEndDate" xlink:title="label: DocumentPeriodEndDate to label_DocumentPeriodEndDate"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/non-gaap/dei-2009-01-31.xsd#dei_DocumentType" xlink:label="DocumentType" xlink:title="DocumentType"/>
    <label xlink:type="resource" xlink:label="label_DocumentType" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DocumentType" xml:lang="en-US" id="label_DocumentType">Document Type</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DocumentType" xlink:to="label_DocumentType" xlink:title="label: DocumentType to label_DocumentType"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/non-gaap/dei-2009-01-31.xsd#dei_EntityWellKnownSeasonedIssuer" xlink:label="EntityWellKnownSeasonedIssuer" xlink:title="EntityWellKnownSeasonedIssuer"/>
    <label xlink:type="resource" xlink:label="label_EntityWellKnownSeasonedIssuer" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityWellKnownSeasonedIssuer" xml:lang="en-US" id="label_EntityWellKnownSeasonedIssuer">Entity Well-known Seasoned Issuer</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityWellKnownSeasonedIssuer" xlink:to="label_EntityWellKnownSeasonedIssuer" xlink:title="label: EntityWellKnownSeasonedIssuer to label_EntityWellKnownSeasonedIssuer"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/non-gaap/dei-2009-01-31.xsd#dei_EntityVoluntaryFilers" xlink:label="EntityVoluntaryFilers" xlink:title="EntityVoluntaryFilers"/>
    <label xlink:type="resource" xlink:label="label_EntityVoluntaryFilers" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityVoluntaryFilers" xml:lang="en-US" id="label_EntityVoluntaryFilers">Entity Voluntary Filers</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityVoluntaryFilers" xlink:to="label_EntityVoluntaryFilers" xlink:title="label: EntityVoluntaryFilers to label_EntityVoluntaryFilers"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/non-gaap/dei-2009-01-31.xsd#dei_EntityCurrentReportingStatus" xlink:label="EntityCurrentReportingStatus" xlink:title="EntityCurrentReportingStatus"/>
    <label xlink:type="resource" xlink:label="label_EntityCurrentReportingStatus" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityCurrentReportingStatus" xml:lang="en-US" id="label_EntityCurrentReportingStatus">Entity Current Reporting Status</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityCurrentReportingStatus" xlink:to="label_EntityCurrentReportingStatus" xlink:title="label: EntityCurrentReportingStatus to label_EntityCurrentReportingStatus"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/non-gaap/dei-2009-01-31.xsd#dei_EntityFilerCategory" xlink:label="EntityFilerCategory" xlink:title="EntityFilerCategory"/>
    <label xlink:type="resource" xlink:label="label_EntityFilerCategory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityFilerCategory" xml:lang="en-US" id="label_EntityFilerCategory">Entity Filer Category</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityFilerCategory" xlink:to="label_EntityFilerCategory" xlink:title="label: EntityFilerCategory to label_EntityFilerCategory"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/non-gaap/dei-2009-01-31.xsd#dei_EntityPublicFloat" xlink:label="EntityPublicFloat" xlink:title="EntityPublicFloat"/>
    <label xlink:type="resource" xlink:label="label_EntityPublicFloat" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityPublicFloat" xml:lang="en-US" id="label_EntityPublicFloat">Entity Public Float</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityPublicFloat" xlink:to="label_EntityPublicFloat" xlink:title="label: EntityPublicFloat to label_EntityPublicFloat"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/non-gaap/dei-2009-01-31.xsd#dei_EntityRegistrantName" xlink:label="EntityRegistrantName" xlink:title="EntityRegistrantName"/>
    <label xlink:type="resource" xlink:label="label_EntityRegistrantName" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityRegistrantName" xml:lang="en-US" id="label_EntityRegistrantName">Entity Registrant Name</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityRegistrantName" xlink:to="label_EntityRegistrantName" xlink:title="label: EntityRegistrantName to label_EntityRegistrantName"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/non-gaap/dei-2009-01-31.xsd#dei_EntityCentralIndexKey" xlink:label="EntityCentralIndexKey" xlink:title="EntityCentralIndexKey"/>
    <label xlink:type="resource" xlink:label="label_EntityCentralIndexKey" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityCentralIndexKey" xml:lang="en-US" id="label_EntityCentralIndexKey">Entity Central Index Key</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityCentralIndexKey" xlink:to="label_EntityCentralIndexKey" xlink:title="label: EntityCentralIndexKey to label_EntityCentralIndexKey"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/non-gaap/dei-2009-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="EntityCommonStockSharesOutstanding" xlink:title="EntityCommonStockSharesOutstanding"/>
    <label xlink:type="resource" xlink:label="label_EntityCommonStockSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityCommonStockSharesOutstanding" xml:lang="en-US" id="label_EntityCommonStockSharesOutstanding">Entity Common Stock, Shares Outstanding</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityCommonStockSharesOutstanding" xlink:to="label_EntityCommonStockSharesOutstanding" xlink:title="label: EntityCommonStockSharesOutstanding to label_EntityCommonStockSharesOutstanding"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/non-gaap/dei-2009-01-31.xsd#dei_DocumentFiscalYearFocus" xlink:label="DocumentFiscalYearFocus" xlink:title="DocumentFiscalYearFocus"/>
    <label xlink:type="resource" xlink:label="label_DocumentFiscalYearFocus" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DocumentFiscalYearFocus" xml:lang="en-US" id="label_DocumentFiscalYearFocus">Document Fiscal Year Focus</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DocumentFiscalYearFocus" xlink:to="label_DocumentFiscalYearFocus" xlink:title="label: DocumentFiscalYearFocus to label_DocumentFiscalYearFocus"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/non-gaap/dei-2009-01-31.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="DocumentFiscalPeriodFocus" xlink:title="DocumentFiscalPeriodFocus"/>
    <label xlink:type="resource" xlink:label="label_DocumentFiscalPeriodFocus" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DocumentFiscalPeriodFocus" xml:lang="en-US" id="label_DocumentFiscalPeriodFocus">Document Fiscal Period Focus</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DocumentFiscalPeriodFocus" xlink:to="label_DocumentFiscalPeriodFocus" xlink:title="label: DocumentFiscalPeriodFocus to label_DocumentFiscalPeriodFocus"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/non-gaap/dei-2009-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <label xlink:type="resource" xlink:label="label_LegalEntityAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LegalEntityAxis" xml:lang="en-US" id="label_LegalEntityAxis">Legal Entity [Axis]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LegalEntityAxis" xlink:to="label_LegalEntityAxis" xlink:title="label: LegalEntityAxis to label_LegalEntityAxis"/>
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/non-gaap/dei-2009-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <label xlink:type="resource" xlink:label="label_EntityDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityDomain" xml:lang="en-US" id="label_EntityDomain">Entity [Domain]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityDomain" xlink:to="label_EntityDomain" xlink:title="label: EntityDomain to label_EntityDomain"/>
    <loc xlink:type="locator" xlink:href="vrtx-20110331.xsd#vrtx_CollaborativeArrangementContingentConsiderationEarnedUponApprovalMilestone" xlink:label="CollaborativeArrangementContingentConsiderationEarnedUponApprovalMilestone" xlink:title="CollaborativeArrangementContingentConsiderationEarnedUponApprovalMilestone"/>
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