<SUBMISSION>
<ACCESSION-NUMBER>0001209191-18-016614
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20180301
<FILING-DATE>20180305
<DATE-OF-FILING-DATE-CHANGE>20180305
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>Rubin Steven D
<CIK>0001381874
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-32849
<FILM-NUMBER>18667131
</FILING-VALUES>
<MAIL-ADDRESS>
<STREET1>OPKO HEALTH, INC.
<STREET2>4400 BISCAYNE BLVD.
<CITY>MIAMI
<STATE>FL
<ZIP>33137
</MAIL-ADDRESS>
</REPORTING-OWNER>
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>Castle Brands Inc
<CIK>0001311538
<ASSIGNED-SIC>2080
<IRS-NUMBER>000000000
<STATE-OF-INCORPORATION>FL
<FISCAL-YEAR-END>0331
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>122 EAST 42ND STREET
<STREET2>SUITE 4700
<CITY>NEW YORK
<STATE>NY
<ZIP>10168
<PHONE>646-356-0200
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>122 EAST 42ND STREET
<STREET2>SUITE 4700
<CITY>NEW YORK
<STATE>NY
<ZIP>10168
</MAIL-ADDRESS>
</ISSUER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-03-01</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001311538</issuerCik>
        <issuerName>Castle Brands Inc</issuerName>
        <issuerTradingSymbol>ROX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001381874</rptOwnerCik>
            <rptOwnerName>Rubin Steven D</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>4400 BISCAYNE BLVD., 15TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MIAMI</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33137</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2018-03-01</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>15000</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>16000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Restricted shares of common stock issued pursuant to the issuer's 2013 Incentive Compensation Plan, as amended. Restricted shares vest in two equal annual installments commencing on the first anniversary of the date of grant provided Mr. Rubin is then still a director of the issuer, subject to earlier vesting upon his death or disability or a change of control of the issuer.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Steven D. Rubin</signatureName>
        <signatureDate>2018-03-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
