Norethindrone

hormone · endocrine · reproductive · Oral

Norethindrone, a hormone. Synthetic progestin — weak androgenic + estrogenic activity (partly via metabolic conversion to ethinyl estradiol). Used… Oral half-life 9 h.

Synthetic progestin — weak androgenic + estrogenic activity (partly via metabolic conversion to ethinyl estradiol). Used in combined oral contraceptives + progestin-only "mini-pill" + menstrual disorders. Preferred progestin in some breast-cancer history pills.