Stanozolol is an anabolic steroid that, by its characteristics, is a progesterone antagonist. With its anabolic activity, Stanozolol is three times superior to testosterone. On the market, the drug is known under the trade name Winstrol. The steroid Stanozolol is a rather weak drug for building muscle mass, but at the same time, it is very good for increasing sports endurance. Winstrol has been around for quite some time and continues to be extremely popular in bodybuilding and athletics. The drug is available in injectable form, which, unlike many steroids, is not in oil form, but in the form of an aqueous suspension. In addition, it exists in the form of tablets for oral administration.