What is the definition or description of: DecaDurabolin allergy?

DecaDurabolin. DecaDurabolin (Nandrolone or 19-nortestosterone or 19-norandrostenolone) is a synthetic anabolic-androgenic steroid medicine. For more information of potential adverse reactions including allergies see: https://www.drugs.com/sfx/deca-durabolin-side-effects.html.