EXHIBIT 23.1
 
                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS
   
As independent public accountants, we hereby consent to the incorporation by
reference in this Amendment No. 1 to the Registration Statement on Form S-4 of
McKesson Corporation of our reports dated February 6, 1998 included or
incorporated by reference in HBO & Company's Form 10-K for the year ended
December 31, 1997 and to all references to our firm included in this
registration statement.     
 
                                          /s/ Arthur Andersen LLP
                                          ------------------------------------
                                            ARTHUR ANDERSEN LLP
 
Atlanta, Georgia
   
November 25, 1998