<?xml version="1.0"?>
<ownershipDocument>

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    <periodOfReport>2009-10-15</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0000005187</issuerCik>
        <issuerName>WYETH</issuerName>
        <issuerTradingSymbol>WYE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001450730</rptOwnerCik>
            <rptOwnerName>Kamarck Michael E.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>5 GIRALDA FARMS</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MADISON</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>07940</rptOwnerZipCode>
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            <isOther>0</isOther>
            <officerTitle>President, TO&amp;PS</officerTitle>
        </reportingOwnerRelationship>
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            <securityTitle>
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    <footnotes>
        <footnote id="F1">Pursuant to the Agreement and Plan of Merger by and among Wyeth, Pfizer Inc. and Wagner Acquisition Corp., dated as of January 25, 2009 (as amended, the &quot;Merger Agreement&quot;), each of these shares was cancelled at the effective time of the merger and converted into the right to receive $33.00 in cash and 0.985 of a share of Pfizer Inc. common stock, less any applicable tax withholding. Includes 8,280 restricted stock units that received the above merger consideration deferred into a rabbi trust.</footnote>
        <footnote id="F2">Pursuant to the Merger Agreement, each outstanding and unexercised option, whether vested or unvested, was cancelled at the effective time of the merger in exchange for cash equal to the product of (a) the number of shares underlying such option and (b) the excess, if any, of the per share value of the merger consideration of $49.58 over the per share exercise price of the option, less any applicable tax withholding.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Tara J. Gabbai, Attorney-in-Fact for Michael E. Kamarck</signatureName>
        <signatureDate>2009-10-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
