McKesson Corporation revenue for the last year amounted to 308.95 B USD, the most of which — 278.74 B USD — came from its highest performing source at the moment, United States Pharmaceutical, the year earlier bringing 240.62 B USD. The greatest contribution to the revenue figure was made by United States — last year it brought McKesson Corporation 294.82 B USD, and the year before that — 256.11 B USD.