Dianabol is an androgen and anabolic steroid that is used for bodybuilding and performance-enhancing purposes, and is typically taken by mouth.(1) Dianabol, also known as metandienone and methandienone, is an androgen and anabolic steroid that helps to improve muscle mass. Proviron (mesterolone) is an anabolic steroid that was commonly used in bodybuilding’s Golden Era of the ’70s, sometimes being stacked with Dianabol.