Stanozolol is a synthetic anabolic steroid derived from testosterone.
The anabolic property makes stanozolol useful as a doping agent. It became famous at the 1988 Olympic Games when the athlete Ben Johnson was convicted of taking stanozolol. Despite its relationship to dihydrotestosterone, stanozolol is only weakly androgenic and moderately anabolic. Stanozolol cannot convert to estrogen in the human body. A stanozolol derivative is Furazabol.
In body building, stanozolol is used before competitions and in the diet phase, as it enables the build-up of lean muscle mass even in negative calorie phases. The increase in strength is moderate compared to other steroids, but steady.