NPP steroid was originally approved by the FDA in 1959 for medical use under the brand name Durabolin, its full name is Nolone phenylpropionate, a synthetic anabolic steroid. It has a high anabolic activity with an 11:1 ratio of anabolic to androgenic activity and is widely used by bodybuilders around the world. In contrast to Deca Durabolin(Norone caprate), their active …