Nandrolone decanoate is a synthetic anabolic steroid that is used in the medical field to treat various conditions like osteoporosis, breast cancer, and more. It is widely known by its brand names, Deca-Durabolin and Retabolil. However, some people search for synonyms for this drug for various reasons. Some of the synonyms for nandrolone decanoate include nandrolone 17β-decanoate, 19-nortestosterone decanoate, and estr-4-en-3-one decanoate. Other common synonyms include Deca, ND, and Decadurabolin. It is important to note that using these synonyms may lead to confusion, as they may refer to different substances, and individuals should always consult with a medical professional before using any medication.