Pharmacy Author:
Medical and Pharmacy Editor:

GENERIC NAME: Progesterone

BRAND NAME: Prometrium

DRUG CLASS AND MECHANISM: Progesterone is a man-made medication derived from a plant source and is identical to the female hormone, progesterone produced in the ovaries. It promotes the development of the mammary glands, causes changes in the endometrium, which lines the uterus, relaxes uterine smooth muscles, blocks ovulation within the ovaries, and maintains pregnancy. Progesterone was approved in May, 1998.



PREPARATIONS: Capsules: 100 and 200 mg

STORAGE: Progesterone capsules should be stored between 20 C to 25 C (68 F to 77 F) and should be protected from excessive moisture.

PRESCRIBED FOR: Progesterone capsules are used to prevent endometrial enlargement (hyperplasia) in postmenopausal women who have not had their uterus removed (hysterectomy) and who are receiving daily conjugated estrogens. Progesterone capsules also are used for the treatment of secondary amenorrhea (absence of menstrual periods).

Medically Reviewed by a Doctor on 10/7/2014

Report Problems to the Food and Drug Administration

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

Pill Finder Tool

Need help identifying pills and medications?
Use the pill identifier tool on RxList.

Back to Medications Index