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

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    <documentType>4</documentType>

    <periodOfReport>2023-10-16</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0001844280</issuerCik>
        <issuerName>Thorne Healthtech, Inc.</issuerName>
        <issuerTradingSymbol>THRN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001875562</rptOwnerCik>
            <rptOwnerName>McCamy William C.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O THORNE HEALTHTECH, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>152 W. 57TH STREET</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10019</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

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    <footnotes>
        <footnote id="F1">Certain of these shares are represented by previously reported restricted stock units (&quot;RSUs&quot;). At the effective time of the merger (the &quot;Effective Time&quot;) contemplated by the Agreement and Plan of Merger between the Issuer, Healthspan Buyer, LLC and Healthspan Merger Sub, Inc., dated as of August 27, 2023 (the &quot;Merger Agreement&quot;), (i) each issued and outstanding RSU was cancelled and converted into the right to receive an amount equal to $10.20 in cash (the &quot;Per Share Price&quot;), subject to the terms set forth in the Merger Agreement, and (ii) each issued and outstanding share of the Issuer's Common Stock was cancelled and converted into the right to receive an amount in cash equal to the Per Share Price.</footnote>
        <footnote id="F2">At the Effective Time, the option was cancelled pursuant to the Merger Agreement in exchange for a cash payment equal to (x) the difference between the Per Share Price and the per share exercise price of the option, multiplied by (y) the number of disposed option shares.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Kim Pearson, under power of attorney</signatureName>
        <signatureDate>2023-10-18</signatureDate>
    </ownerSignature>
</ownershipDocument>
