a synthetic hormone often used in the production of contraceptives.
a group of synthetic drugs created to resemble progesterone. Androgenic forms have been in use in oral contraceptives for many years. The most common form in North America is medroxyprogesterone. This is not androgenic.
A synthetic hormone that mimics the body's progesterone. A progestin is usually included in an oral birth control pill and in postmenopausal hormone replacement therapy to prevent endometrial cancer.