Nandrolone phenylpropionate is one of the most popular injectable steroids. It is basically Deca, with a shorter ester ( phenylpropionate instead of decanoate ester found in deca durabolin or nandrolone decanoate), resulting in quicker release into the bloodstream. Although its shorter ester means it will require more frequent injections than decanoate, the positive side is that the amount of effective nandrolone in the blood and its levels are more easilly contollable. It's popularity is likely due to the fact that nandrolone exhibits significant anabolic effects with minimal androgenic side effects.