Nandrolone decanoate causes positive nitrogen balance in muscle tissue and thus exhibits significant anabolic effects with minimal androgenic side effects. The use of nandrolone decanoate results in increase of bodyweight and has a positive effect on immune sustem. Nandrolone Decanoate also blocks the cortisone receptors allowing less cortisone to reach muscle cells and connective tissue. During recent years nandrolone has been widely used in treatment of HIV patients. Minimal side effects can be manifested as high blood pressure, headaches and prolonged time for blood clotting.