Metandienone is an orally active, synthetic anabolic-androgenic steroid (AAS) and a 17α-methylated derivative of testosterone. Metandienone was originally developed in 1957 by CIBA and marketed in Germany and the United States. As the CIBA product Dianabol, metandienone quickly became the first widely used anabolic-androgenic steroid among professional and amateur athletes, and remains the most common orally-administered steroid for non-medical use. …