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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 Qpr7pWMCOpCs7Eh0bP/wBp/S9TGrdEbma8EaFdn+8n43RPXwyk83N7ZL4b38jM+B
 5JDC2U+Tovv/62O3InqwVA==

<SEC-DOCUMENT>0001209191-09-054592.txt : 20091130
<SEC-HEADER>0001209191-09-054592.hdr.sgml : 20091130
<ACCEPTANCE-DATETIME>20091130133907
ACCESSION NUMBER:		0001209191-09-054592
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20090908
FILED AS OF DATE:		20091130
DATE AS OF CHANGE:		20091130

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Kovary Stephen John
		CENTRAL INDEX KEY:			0001472140

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31298
		FILM NUMBER:		091211427

	MAIL ADDRESS:	
		STREET 1:		22 HERITAGE COURT
		CITY:			RANDOLPH
		STATE:			NJ
		ZIP:			07869

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			LANNETT CO INC
		CENTRAL INDEX KEY:			0000057725
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				230787699
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		9000 STATE RD
		CITY:			PHILADELPHIA
		STATE:			PA
		ZIP:			19136
		BUSINESS PHONE:		2153339000

	MAIL ADDRESS:	
		STREET 1:		9000 STATE ROAD
		STREET 2:		9000 STATE ROAD
		CITY:			PHLADELPHIA
		STATE:			PA
		ZIP:			19136

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NETHERLANDS SECURITIES INC
		DATE OF NAME CHANGE:	19660629
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>doc3.xml
<DESCRIPTION>FORM 3 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0203</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2009-09-08</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000057725</issuerCik>
        <issuerName>LANNETT CO INC</issuerName>
        <issuerTradingSymbol>LCI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001472140</rptOwnerCik>
            <rptOwnerName>Kovary Stephen John</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>22 HERITAGE COURT</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>RANDOLPH</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>07869</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>VP - Operations</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Option to Buy</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>8.48</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2019-09-14</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>20000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Exercisable in 1/3 equal increments on 9/14/2010, 9/14/2011, and 9/14/2012.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Keith R. Ruck</signatureName>
        <signatureDate>2009-11-30</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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