Many athletes worldwide, including the UK are familiar with fellow preparation for active substance nandrolone decanoate. Some athletes, calling on our Forum, believe that their effect is very different, and in general it is the opposite steroids. In fact only difference lies in the time activity in the body material. Nandrolone phenylpropionate remains active for 2-3 days, and decanoate ester of a long, active for weeks. In this regard and by Vermodje Fenilver dosage should be somewhat larger, and should be placed more injections.