Nandrolone Phenylpropionate (Methandriol Dipropionate)
Nandrolone Phenylpropionate is an anabolic steroid very similar to the popular compound Nandrolone Decanoate. However, Nandrolone Phenylpropionate was the first Nandrolone compound to hit the market. Nandrolone Phenylpropionate was launched in the 1950s and was introduced to the market by Organon as Durabolin. Soon after, Organon will release its cousin Decanoate called Deca Durabolin.
Nandrolone Phenylpropionate is a small ester anabolic steroid commonly known as NPP. This product has never been as popular as the larger ester decanoate version in part due to its availability; however, the modern era has seen a resurgence in both use and availability, thanks in part to clandestine labs.
Nandrolone Phenylpropionate has many therapeutic and functional benefits. The Nandrolone hormone is the most widely prescribed anabolic steroid other than testosterone, but the decanoate version is the most widely prescribed form of Nandrolone. It is one of the best tolerated steroids, both performance-wise and medically, although there are certainly potential side effects.

Functions and Features of Nandrolone Phenylpropionate
Nandrolone phenylpropionate is a 19-nortestosterone (19-nor) anabolic androgenic steroid. The 19-nor classification refers to a structural change in the hormone testosterone, consisting of the removal of a carbon atom at position 19. This simple structural change gives us nandrolone, and the addition of an ester of short phenylpropionic acid gives us nandrolone phenylpropionate.
The function of Nandrolone Phenylpropionate hormone is same as Nandrolone Decanoate. Both forms consist of the same active hormone. In the case of NPP, we have a shorter ester version that releases more Nandrolone after injection, but also has a much shorter half-life. This means that nandrolone phenylpropionate must be administered more frequently than its larger ester counterpart in order for blood levels to remain stable.
Nandrolone Phenylpropionate is slightly more anabolic than testosterone at a rating of 125 compared to a testosterone rating of 100. It is also significantly less androgenic at a rating of 37 compared to a testosterone rating of 100. The decrease in androgenicity is due to the hormone nandrolone. be reduced to dihydronandrolone. (DHN) instead of dihydrotestosterone (DHT). This is one reason why Nandrolone Phenylpropionate may be well tolerated by some men at higher doses than higher doses of testosterone.
Nandrolone phenylpropionate is also significantly less estrogenic than testosterone. Both nandrolone and testosterone aromatize, but nandrolone aromatizes 20% faster than testosterone.
Important Note: Nandrolone Phenylpropionate is progestin in nature, which will affect the side effects of this hormone.
Nandrolone Phenylpropionate has many positive traits which are similar to many anabolic steroids. However, this compound also has functional characteristics that far exceed what some steroid hormones are capable of. Positive functional characteristics of nandrolone phenylpropionate include:
- Increased IGF-1 Production: Insulin-Like Growth Factor (IGF-1) is a powerful anabolic hormone that is also important for our body’s ability to recover. It is a hormone that affects almost every cell in the human body.
- Suppression of glucocorticoids: Known as stress hormones (cortisol), these hormones are essential to our health and well-being. However, glucocorticoids can also contribute to muscle loss and weight gain when they become dominant. Vigorous activity can cause stress hormone levels to rise. Hormones like nandrolone can reduce the production of stress hormones.
- Increased Nitrogen Retention: All muscle tissue is made up of 16% nitrogen. If the delay falls, we fall into a catabolic state. The more we save, the more anabolic we stay.
- Increased protein synthesis: This refers to the rate at which cells make protein, the building blocks of muscle tissue.
- Increased red blood cell count: Red blood cells carry oxygen to and through the blood. Increased efficiency leads to increased endurance and muscle recovery.
- Increased collagen synthesis and bone mineral content: This refers to the strength of bones and cartilage, as well as their ability to strengthen and facilitate healing. This applies to joints more than anywhere else.
Important Note: Nandrolone is often said to cause water to enter the joints, which provides relief. It is physically impossible. It’s not water, it’s an improvement in the synthesis of collagen and minerals in the bones.
Nandrolone Phenylpropionate is also suitable for treatment in many areas. Although nandrolone decanoate is more commonly used, the phenylpropionate version is still used with some regularity. The use of Nandrolone Phenylpropionate has been shown to be beneficial in the treatment of the following conditions:
- Diseases that cause muscle wasting: cancer, HIV, etc.
- Reduction of geriatric weakness and fatigue
- Anemia
- breast cancer
- Treatment of burns.
- ulcers
- pituitary dwarfism
- Delayed development of children
- Osteoporosis
Despite its many benefits and uses, in the United States, nandrolone is generally only prescribed for HIV, AIDS, and anemia. Its effectiveness in other fields is high, but it is generally used in fields of medicine outside the United States. Some doctors in the United States have started prescribing it for anti-aging purposes, but it still only represents a very small fraction of all prescriptions.
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Effects of Nandrolone Phenylpropionate
With a thorough understanding of the functions and properties of Nandrolone Phenylpropionate, we already have a good understanding of the positive effects of this steroid. However, in terms an athlete may appreciate, we can be more specific.
Nandrolone Phenylpropionate is one of the best steroids you can choose for muscle gain and size, for an athlete on the off season mass gain cycle. It is one of the best mass building tools available and is used by many bodybuilders in all mass building plans. Although the Nandrolone form acts faster, the growth will not be rapid, but it will be steady, regular and significant. You are supposed to eat enough to grow. To grow taller, you must consume more calories than you burn. No steroid in the world can change this truth. But you will get more out of your size with a steroid like Nandrolone Phenylpropionate if you do it right. You should also notice that you stay slimmer out of season due to the significant metabolic effects of the hormone.
Nandrolone Phenylpropionate can also be used for cutting cycles, although it is not generally considered a cutting steroid. This steroid will significantly protect muscle mass better than many steroids. When we diet, we need to burn more calories than we consume. This is the only way to get rid of fat. Unfortunately, this puts lean muscle tissue at risk. While dieting, some lean tissue will be lost, but successful dieting limits this loss and nandrolone can provide this measure of protection. Again, the recovery benefits will be huge, especially when recovery can already be incredibly difficult when dieting due to a calorie deficit.
Maximum performance benefits surround the athlete. Many athletes use low doses of nandrolone phenylpropionate for joint relief and recovery. It’s not a masking benefit, like painkillers, but a real relief. Some may also find an increase in strength, although this is not a steroid known for its incredible strength enhancing properties. However, it is one of the most commonly used steroids by athletes.