Name: Androstenedione

Suggested Dosing

Improving muscle strength & size

50-150 mg PO BID

Suggested Uses

Improve strength, athletic performance


Demonstrated to increase endogenous testosterone production, but no conclusive effects on muscle mass

Adverse Effects

Expected to be similar to exogenous testosterone:

Men: acne, decreased endogenous testosterone, testicular atrophy, gynecomastia, increased risk of prostate cancer

Women: clitoral hypertrophy, hirsutism, acne, amenorrhea

Adolescents: early closing of growth plates, decreased adult height




Pregnancy & Lactation

Pregnancy Category: N/A

Lactation: N/A

Pregnancy Categories

A:Generally acceptable. Controlled studies in pregnant women show no evidence of fetal risk.

B:May be acceptable. Either animal studies show no risk but human studies not available or animal studies showed minor risks and human studies done and showed no risk.

C:Use with caution if benefits outweigh risks. Animal studies show risk and human studies not available or neither animal nor human studies done.

D:Use in LIFE-THREATENING emergencies when no safer drug available. Positive evidence of human fetal risk.

X:Do not use in pregnancy. Risks involved outweigh potential benefits. Safer alternatives exist.

NA:Information not available.