Description: Androstenedione is a hormone that occurs naturally in the body. It is currently available as a supplement and is popular among bodybuilders and athletes. Studies have shown this hormone to increase testosterone levels in women. Studies with men have been mixed, with one showing an increase in estrogen and testosterone, and others showing an increase in estrogen only. Bodybuilders and other athletes also use similar hormones, known as androstenediol and norandrostenedione, but they have not been well studied.

Indications: Menopausal or postmenopausal women with low estrogen or testosterone levels

Precautions: Androstenedione and related supplements should be used only with a doctor's guidance. The National Football League has banned androstenedione and related substances.

Dosage: Take 100 to 300 mg daily.