Nandrolone Decanoate is a very powerful anabolic steroid known for its versatility in both bulking and cutting cycles. Side effects are mild and rarely reported when the drug is used responsibly. Some of Deca more positive properties include reversing muscle destruction, increasing red cell production and promoting tissue regeneration, which is why this drug is often administered medically to patients wasting from HIV. Nandrolone Phenylpropionate, also known as NPP is very similar to the very popular steroid “Deca” which is Nandrolone with a longer ester (Decanoate). Nandrolone Phenylpropionate is, therefore, a shorter acting “Deca” for all practical intents and purposes. Anecdotally, it seems to produce less water retention than its longer acting cousin, and this would be very consistent with injectable testosterones, where we find that shorter esters provide much less water retention.