NandrolonePhenylpropionate or NPP was the premier Nandrolone compound which hit the market commercially. It was brought under the trade name Durabolin by Organon. However, soon after its release, Organon released its cousin Deca-Durabolin, which made its way into the bodybuilding community. This product had not witnessed popularity like the Decanoate version, partly due to its availability issue though it has made a comeback in the modern era because of the underground labs. Another factor for its non-popularity was that the injectable steroids were considered a taboo during those years and the users found Deca-Durabolin as the ideal compound.
Nandrolone is available as either decanote or phenylpropionate ester. Both Deca and NPP are nandrolone versions and the difference lies in the ester. Deca has a longer ester than NPP. In a shorter ester, more injections are needed and with longer ester frequent injections are not required. Only 1 or 2 injections weekly are decent. NPP is anabolic in nature and its anabolic rating is 125 in comparison to testosterone’s rating of 100. The androgenic rating is comparatively lower than the testosterone’s rating. The low androgenicity of this anabolic steroid makes it well-tolerable by men even at higher dosages. It is also remarkably less estrogenic than testosterone.
This steroid can deliver insulin-like growth factor or IGF-1. IGF-1 is a hormone which is anabolic in nature and helps the body to recover from training. It inhibits glucocorticoids and they are also called stress hormones or cortisol. If the levels are too high or dominant, they can lead to fat gain and muscle loss. Nandrolone reduces the production of cortisol. Another advantage of this drug is that it boosts nitrogen retention. The muscle tissues are composed of 16% nitrogen and the more nitrogen you retain the more anabolic you become. When there is less nitrogen retention you tend to become more catabolic.
This steroid also enhances protein synthesis. Protein synthesis determines the rate at which the muscle cells build proteins. Further, it promotes the count of red blood cells. These cells carry oxygen to the bloodstream. When its production rises, the muscular endurance increases and the recovery would become faster. Additionally, it boosts collagen synthesis and mineral content in bones. If strong cartilage and bones are desired, this is a perfect steroid. It can treat a number of medical conditions. Patients suffering from cancer and HIV positive benefit from it. It also helps in treating other muscle wasting diseases. Other ailments that are treated include ulcers, pituitary dwarfism, osteoporosis, serious burns etc.
Deca-Durabolin vs. NandrolonePhenylpropionate
Both the versions of Nandrolone have either decanoate or phenylpropionate ester and are great for bulking and building mass and strength significantly. NPP and Deca are identical to each other in terms of function. They only differ in terms of ester life and half-life. NPP’s ester version is shorter than Deca and therefore it is injected frequently. In terms of half-life, NPP is a better choice than Deca as the former takes only 2-3 weeks to leave the system whereas the latter takes about 6 months and can be detected till 18 months.