Stanozolol is an anabolic steroid. Alkylated with the 17-alpha methyl group, so it doesn’t break down during passage through the liver. It is a derivative of dihydrotestosterone. The anabolic activity of stanozolol is very high, and the androgenic index is low, it does not aromatize, so the estrogen level does not increase, and side effects such as gynaecomastia, fluid retention are completely excluded. Anabolic activity - 320% of testosterone. Androgenic activity - 30% of testosterone.