Stanozolol is an androgenic steroid that was launched commercially in 1962 under the name Winstrol, a name that popularized the drug among bodybuilders and gym rats. Among the various therapeutic uses was the treatment of muscle mass loss in some diseases and osteoporosis. Stanozolol also became popular among athletes of different modalities and starred in the famous doping scandal in athletics, when Ben Johnson lost the gold medal in the 100 meters in the Seoul Olympics (1988), after falling in the anti-doping test for use of stanozolol.

This drug does not aromatize, nor does it convert to DHT, so it does not cause gynecomastia and muscle volume gain occurs with little or no water retention. Bodybuilders like to use this steroid in pre-contest, because in addition to quality gains it helps in burning fat. Because it is a 17aa drug, it is hepatotoxic and is the steroid that most damages the lipid profile, greatly reducing HDL and increasing LDL. Use for more than 6-8 weeks is not recommended and the usual doses range from 30-60 mg per day for the oral version and 50-100 mg per day or every other day for the injectable version. The injectable version usually causes problems of inflammation and infection in some users, as it is sold mainly in aqueous solution, more subject to contamination. Many users also complain of joint pain with the use of stanozolol.

Even if it does not convert to DHT, this steroid has the potential to promote strong androgenic side effects, such as acne, hair loss and virilization in women. It is common for women to suffer from the side effects of this drug and the risk potentially increases at doses greater than 10-20 mg per day. I have seen many women take 50 mg every other day of the injectable version and gain a lot of weight, accompanied by aggressive side effects such as thickening of the voice, a lot of hair loss, acne and hypertrophy of the clitoris. One of the most powerful cycles among bodybuilders is the combination of stanozolol with trenbolone and testosterone in pre-contest.

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