What is Mesterolone? It is better known by its brand name Proviron than Mesterolone. Mesterolone is an oral androgen and anabolic steroid (AAS) drug developed in the 1960s and introduced for medical use by Schering in 1967 under the brand name Proviron. It is a derivative of DHT, does not produce estrogen, has weak androgenic and anabolic effects, is used …