Selegiline (chemical name: L-Deprenyl, Brandnames: Eldepryl , Jumex, Zelapar, or veterinairy Anipryl
I believe nootropics like by example Selegiline Cabergoline and Bromocriptine are very underrated bodybuilding drugs.
The enzyme monoamine oxidase has two main forms, type A and type B. They are coded by separate genes. MAO may be inhibited with agents that act reversibly or irreversibly; and selectively or unselectively. These categories are not absolute.
MAO type-A preferentially deaminates serotonin and noradrenaline, and also non-selectively dopamine. Type B metabolises dopamine, phenylethylamine (the chocolate amphetamine) and various trace amines.