It is an injectable pharmaceutical product containing Nandrolone Phenylpropionate (NPP) , an anabolic-androgenic steroid (AAS) , at a concentration of 100 mg per milliliter (mL) .

In a laboratory/medical context, Nandrolone Phenylpropionate is a nandrolone ester that has been historically studied and used in therapies for the management of clinical conditions involving protein catabolism and negative nitrogen balance, such as certain anemias or osteoporosis. It is classified as a restricted and controlled substance.