Methyltestosterone

Methyltestosterone is an orally active anabolic-androgenic steroid derived from testosterone, commonly associated with androgenic activity, strength development and muscle mass gains. In bodybuilding, it has historically been associated with bulking and strength-focused training, although its use is less common than that of other oral anabolic steroids.

Methyltestosterone is a 17-alpha-methylated form of testosterone, a chemical modification that allows it to remain active when taken orally. It has both anabolic and androgenic effects and can convert into estrogenic metabolites, meaning increases in body weight may partly reflect water retention. Unlike injectable testosterone esters such as enanthate, cypionate and propionate, Methyltestosterone is a chemically modified steroid rather than simply another ester of testosterone.