Bleeding Pattern and Management of Unexpected Bleeding/Spotting with an Extended Regimen of a Combination of Ethinylestradiol 20 mcg and Drospirenone 3 mg.

Objective: To compare the bleeding pattern in women using ethinylestradiol 20 mcg/drospirenone 3 mg (EE 20 mcg/DRSP 3 mg) in a 24/4-day cyclic regimen with an extended regimen. Unexpected bleeding/spotting in the extended regimen group was managed by allowing a 4-day hormone-free interval (HFI).

Methods: This was a randomized, prospective, open-label, multicenter study.