Aromasin (Exemestane) - a new generation of drug that blocks enzymes responsible for aromatisation. Exemestane is significantly different from drugs belonging to the class of aromatase inhibitors. Aromasin is a better drug. Familiar aromatase inhibitors have only a temporary efficiency, but Aromasin has an irreversible and permanent effect. As a result of the drug are suppressed 85% or more estrogens in the body of the athlete.