Manufacturer: Maxtreme Category: Injectable Steroids Substance: Deca Durabolin (Nandrolone Decanoate) Package: 10 ml vial Deca, also known as Deca Durabolin or nandrolone decanoate, is perhaps the second-best known injectable anabolic steroid after testosterone. It seems that almost every steroid novice and many who are experienced with steroid cycles believe that for best results they may need to include Deca. However, in fact this compound has no special anabolic properties: other injectable steroids can do everything for muscle growth that Deca can.