desogestrel (contraceptive) + epoetin alfa

monitor thrombosis s/sx, especially w/ concomitant estrogen use: combo may incr. risk of thromboembolism (additive effects)

ethinyl estradiol (contraceptive) + epoetin alfa

monitor BP, thrombosis s/sx: combo may incr. risk of HTN, thromboembolism (additive effects)