AMGEN INC revenue for the last year amounted to 33.42 B USD, the most of which — 32.03 B USD — came from its highest performing source at the moment, Human Therapeutics, the year earlier bringing 26.91 B USD. The greatest contribution to the revenue figure was made by United States — last year it brought AMGEN INC 23.86 B USD, and the year before that — 19.81 B USD.