Durabolin-Deca The steroid hormone nandrolone decanoate is marketed under the brand name Deca-Durabolin 100mg. It is an anabolic androgenic steroid that is injected and used to increase muscular mass, strength, and endurance. Bodybuilders and athletes will occasionally take it to boost their performance and physique. https://steriodbuzz.com/product/deca-durabolin/