Current stock purity 99.67% tested on 2022/08/13

Currently produced in 20mg Capsules. Quantity per container will vary per distributor.

Methasterone, also known as methyldrostanolone and known by the nickname Superdrol, is a synthetic and orally active anabolic–androgenic steroid (AAS) which was never marketed for medical use. It was brought to the black market, instead, in a clandestine fashion as a "designer steroid."

Methasterone was never a commercially available prescription drug. Its non-17α-alkylated counterpart, drostanolone propionate, was commercialized by Syntex Corporation under the brand name Masteron.

Methasterone resurfaced in 2005 as a “designer steroid”. It was brought to market by Designer Supplements as the primary ingredient of a dietary supplement named Superdrol. Its introduction into commerce may have represented an attempted circumvention of the U.S. Anabolic Steroids Control Act of 1990 (along with its 2004 revision), since the law is, in part, drug-specific; methasterone, as is the case with many designer steroids, was not declared a Schedule III class anabolic steroid in that act because it was not commercially available at the time the act, and its subsequent revision, were signed into law. Methasterone was therefore being sold as an over-the-counter dietary supplement.

Methasterone is hepatotoxic (toxic to the liver). Several cases of liver damage due to the use of methasterone have been cited in the medical literature.

Methasterone, also known as 2α,17α-dimethyl-5α-dihydrotestosterone (2α,17α-dimethyl-DHT) or as 2α,17α-dimethyl-5α-androstan-17β-ol-3-one, is a synthetic androstane steroid and a 17α-alkylated derivative of DHT.

Mebolazine is formed by hydrazone formation between two equivalents of methasterone with one equivalent of hydrazine.