Nandrolone phenylpropionate (NPP) is an injectable form of the anabolic steroid nandrolone. It is a short-acting nandrolone. The properties of this drug are very similar to those of nandrolone decanoate (DECA). The difference lies in the speed with which nandrolone is released into the blood. Nandrolone decanoate (DECA) can provide 2-3 weeks of nandrolone …