Methandienone, commonly known as Dianabol, Danabol, or Dbol, is a well-known oral steroid used in bodybuilding and other sports. It is characterized by a 17-alpha-methyl group, allowing for oral consumption due to C17-alpha alkylation, which produces significant effects on the body but also puts strain on the liver.
It minimally converts to a more androgenic metabolite via the 5-alpha reductase enzyme. Its effectiveness in boosting muscle size and strength has made it a popular choice among athletes and bodybuilders.