Nandrolone

**Semantic type:** Pharmacologic Substance

**Definition:** A synthetic, anabolic steroid analog of testosterone. Similar to testosterone, nortestosterone (19-Nortestosterone) binds to and activates specific nuclear receptors. This agent may be used for testosterone replacement therapy in hypogonadal men, in HIV-wasting syndrome, and in other conditions in order to increase nitrogen retention and fat-free muscle mass.

**Synonyms:** - 19-Nortestosterone - Estrenolone - NANDROLONE - Norandrostenolone - Nortestosterone - Nortestrionate