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There is no legitimate human dose. Methasterone is a 17α-methylated oral anabolic-androgenic steroid, an illicitly-marketed designer supplement (Superdrol) and a DEA Schedule III controlled substance with no approved human use and no human efficacy trials; this library does NOT provide a human dosing protocol of any kind. For context only, the Superdrol products that produced the documented liver-injury case reports were typically taken at roughly 10-20 mg per day orally for several weeks — a dose range associated with severe hepatotoxicity, not a recommendation. Any non-medical use is illegal without authorization, unmonitored, and dangerous.

Any time

None endorsed — methasterone has no legitimate human form. It was sold illicitly as oral 'Superdrol' tablets/capsules and is now a Schedule III controlled substance

• Any human use — a 17α-methylated oral anabolic-androgenic steroid, an illicitly-marketed designer supplement (Superdrol) and a DEA Schedule III controlled substance with no approved human use and no human efficacy trials; possession/use without authorization is illegal, and it is not a dietary supplement
• Anyone with liver disease or abnormal liver function — methasterone causes severe cholestatic liver injury and is profoundly hepatotoxic
• Anyone seeking it for body composition, performance or anti-aging — there is no human evidence of benefit and a documented record of severe liver and kidney injury

• Hepatotoxic drugs / alcohol / acetaminophen
• Warfarin / oral anticoagulants
• Other anabolic steroids / testosterone / SARMs