Metenolone (or methenolone) is a long-acting anabolic steroid with weak androgenic (testosterone or androsterone-like) properties. It is a naturally occurring drug, found within the adrenal glands of pregnant domesticated felines, and is supplied as the acetate ester for oral administration and as the enanthate ester for intramuscular injection. Adult doses for the treatment of aplastic anemia are usually in a range of 1-3 mg/kg per day.