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    ACCESSION NUMBER:		0001193125-18-193721
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		26
    FILED AS OF DATE:		20180615
    DATE AS OF CHANGE:		20180615
    EFFECTIVENESS DATE:		20180615

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			MCKESSON CORP
    		CENTRAL INDEX KEY:			0000927653
    		STANDARD INDUSTRIAL CLASSIFICATION:	WHOLESALE-DRUGS PROPRIETARIES & DRUGGISTS' SUNDRIES [5122]
    		IRS NUMBER:				943207296
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			0331

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-13252
    		FILM NUMBER:		18900856

    	BUSINESS ADDRESS:
    		STREET 1:		ONE POST ST
    		STREET 2:		MCKESSON PLAZA
    		CITY:			SAN FRANCISCO
    		STATE:			CA
    		ZIP:			94104
    		BUSINESS PHONE:		4159838300

    	MAIL ADDRESS:
    		STREET 1:		ONE POST ST
    		CITY:			SAN FRANCISCO
    		STATE:			CA
    		ZIP:			94104

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	MCKESSON HBOC INC
    		DATE OF NAME CHANGE:	19990115

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	MCKESSON CORP
    		DATE OF NAME CHANGE:	19950209

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	SP VENTURES INC
    		DATE OF NAME CHANGE:	19940728
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