Deca Durabolin is widely regarded as one of the safest and effective steroids. Nandrolone is commonly used as a base in a steroid cycle. Nandrolone is an anabolic steroid that is both presents in the human body and also made synthetic. The levels in the human body are very low to account for any significant effects. It is a byproduct when other hormones breakdown in our body. Of all the anabolic steroids, it is one of the most widely abused steroids by athletes and bodybuilders.