EXHIBIT 23





INDEPENDENT AUDITORS' CONSENT


We consent to the incorporation by reference in McKesson Corporation
Registration Statement Nos. 33-86536, 333-00611, 333-02871, 333-21931,
333-30104, 333-30216, 333-30218, 333-30220, 333-30222, 333-20224, 333-30226,
333-32643, 333-32645, 333-43101, 333-43079, 333-48337, 333-43068, 333-48339,
333-48859, 333-50261, 333-70501, 333-71917, 333-85965, 333-39952, 333-39954,
333-62870, 333-67378, 333-67380, 333-84806 and 333-101210 on Form S-8,
Registration Nos. 333-26443, and Amendment No. 1 thereto, 333-85973, 333-50985
and 333-66359 on Form S-3 and Registration Statement Nos. 333-49119, and
Amendment No. 1 thereto, and 333-56623 on Form S-4 of our report dated April
29, 2003, except for paragraphs 25, 30, 31 and 32 of Financial Note 18, as to
which the date is June 4, 2003 (which expresses an unqualified opinion and
contains  explanatory paragraphs relating to the adoption of new accounting
standards and certain shareholder litigation), appearing in this Annual Report
on Form 10-K of McKesson Corporation for the year ended March 31, 2003.




/s/ DELOITTE & TOUCHE LLP
San Francisco, California
June 4, 2003