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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>0001113681</rptOwnerCik>
            <rptOwnerName>MASCOTTE JOHN P</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>WYETH</rptOwnerStreet1>
            <rptOwnerStreet2>5 GIRALDA FARMS</rptOwnerStreet2>
            <rptOwnerCity>MADISON</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>07940</rptOwnerZipCode>
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        </reportingOwnerAddress>
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            <securityTitle>
                <value>Phantom Stock Units (Retirement)</value>
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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.</footnote>
        <footnote id="F2">Pursuant to the Merger Agreement, each of these shares was cancelled at the effective time of the merger in exchange for cash equal to the per share value of the merger consideration of $49.58.</footnote>
        <footnote id="F3">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.</footnote>
        <footnote id="F4">Pursuant to the Merger Agreement, all phantom stock units, each of which represents the value of one actual share of common stock and has no exercise feature or expiration date, was cancelled at the effective time of the merger in exchange for cash equal to the product of (a) the number of shares underlying the phantom stock units and (b) the per share value of the merger consideration of $49.58.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Tara J. Gabbai, Attorney-in-Fact for John P. Mascotte</signatureName>
        <signatureDate>2009-10-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
