Methyl-1-testosterone is a synthetic 17-alpha-alkylated anabolic-androgenic steroid related structurally to testosterone. Its molecular modifications allow oral activity and produce pronounced androgen receptor activity.

The supplied product identifies a 10mg strength. Methyl-1-testosterone is not an established routine prescription treatment and has primarily been associated with research and non-medical performance-enhancing use.

Its oral activity and chemical structure make hepatic effects particularly important. Exposure may also affect cholesterol, cardiovascular health, endogenous hormone production, and fertility.