Dianabol (methandrostenolone) is the most recognized trade name for the drug
methandrostenolone, also referred to as
methandienone in many countries.
Methandrostenolone is a derivative of
testosterone, modified so that the hormone's androgenic (masculinizing) properties are reduced and it’s anabolic (tissue building) properties preserved. Having a lower level of relative androgenicity than
testosterone,
methandrostenolone is classified as an "anabolic" steroid, although quite a distinct androgenic side is still present. This drug was designed, and is principally sold, as an oral medication, although it can also be found in a number of injectable veterinary solutions.
Dianabol is today, and has historically been, the most commonly used oral anabolic/androgenic steroid for physique and performance-enhancing purposes.