The brand name Winstrol refers to a steroid made of the compound Stanozolol. It is used by the muscle gaining community in muscle mass and strength gain. Performance athletes and bodybuilders widely use it. Due to its chemical makeup, Winstrol is a very mild steroid. It being mild explains why it is loved by athletes engaging in activities that require a lot of strength. Because of its low potency, it is considered to be very dangerous to the human body. It is considered so because; Winstrol contains a high dosage of androgens which is less potent and a low dosage of anabolics. For this reason, the medical world considers it as a very dangerous steroid, contrary to the popular belief by its users that it is safe.
After the Kefauver Harris Amendment was passed in 1962, the . FDA began the DESI review process to ensure the safety and efficacy of drugs approved under the more lenient pre-1962 standards, including Dianabol.  In 1965, the FDA pressured CIBA to further document its legitimate medical uses, and re-approved the drug for treating post-menopausal osteoporosis and pituitary-deficient dwarfism .  After CIBA's patent exclusivity period lapsed, other manufacturers began to market generic metandienone in the .