<SEC-DOCUMENT>0001193125-09-136255-index.html : 20090624
<SEC-HEADER>0001193125-09-136255.hdr.sgml : 20090624
<ACCEPTANCE-DATETIME>20090624095841
ACCESSION NUMBER:		0001193125-09-136255
CONFORMED SUBMISSION TYPE:	424B5
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20090624
DATE AS OF CHANGE:		20090624

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MERCK & CO INC
		CENTRAL INDEX KEY:			0000064978
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				221109110
		STATE OF INCORPORATION:			NJ
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		424B5
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-160134
		FILM NUMBER:		09906540

	BUSINESS ADDRESS:	
		STREET 1:		ONE MERCK DR
		STREET 2:		P O BOX 100
		CITY:			WHITEHOUSE STATION
		STATE:			NJ
		ZIP:			08889-0100
		BUSINESS PHONE:		9084231688

	MAIL ADDRESS:	
		STREET 1:		ONE MERCK DR
		STREET 2:		PO BOX 100 WS3AB-05
		CITY:			WHITEHOUSE STATION
		STATE:			NJ
		ZIP:			08889-0100
</SEC-HEADER>
<DOCUMENT>
<TYPE>424B5
<SEQUENCE>1
<FILENAME>d424b5.htm
<DESCRIPTION>PROSPECTUS SUPPLEMENT
<TEXT>
Document 1 - file: d424b5.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>g45278g97z48.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g45278g97z48.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g45287g18c58.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g45287g18c58.jpg

</DOCUMENT>
</SEC-DOCUMENT>