Winstrol, the brand name for Stanozolol, is a synthetic anabolic steroid derived from dihydrotestosterone (DHT). Originally developed for treating animals, particularly horses, Stanozolol eventually received FDA approval for human use. It is prescribed for conditions such as aplastic anemia and hereditary angioedema. Athletes, bodybuilders, and powerlifters often use it to enhance physique, support muscle mass during fat loss, and boost performance.