“Ovulation Incidence in Oral Contraceptive Users”
Since the introduction of the combined hormonal contraceptive pill, dosages of ethinyl estradiol (EE) have steadily decreased from more than 150mcg to 20mcg in an attempt to improve the risk profile associated with the COC. In 2010, the Food and Drug Administration approved a oral contraceptive pill containing EE 10mcg/NET acetate 1mg (Tradename Lo loestrin). However, no studies have compared this formulation to pills containing either higher doses of estrogen or progestin alone. It is not known whether EE 10mcg is sufficient to prevent follicular development or to support the endometrium as well as higher doses of EE. This trial addresses the question of whether an oral contraceptive pill with EE 10mcg/Norethindrone acetate 1mg will better suppress ovulation or have a better side effect profile than a progestin only pill with a nearly equal dose of norethindrone.
Drug - Ethinyl Estradiol, Norethindrone acetate, ferrous fumarate
Combination Oral Contraceptive Pill. Ethinyl Estradiol 10mcg/Norethindrone acetate 1mg/ferrous fumarate 75mg
Drug - Norethindrone