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NPP vs Deca: what to choose?

Within chemistry, analogues are described as a compound with a molecular structure that is closely similar to that of another compound. In this article we are going to describe and differentiate between the different analogues of NPP (Deca Durabolin mainly) available and which of them are more beneficial than others.

The analogues we are going to focus on are those which include Nandrolone Phenylpropionate (NPP) and Nandrolone Decanoate (Deca-Durabolin). Both of these highly recognised substances are analogues of the Nandrolone steroid hormone that is also known as 19-Nortestosterone.

Some Basic Information Regarding Nandrolone and what to expect from NPP

Nandrolone esters were first described and introduced for medical use in the late 1950s. They are among the most widely used AAS medications worldwide within the medical field. Nandrolone esters are used clinically, although increasingly rarely, for people in catabolic states with major burns, Cancer, AIDS, and an Ophthalmological formulation was available to support cornea healing. In addition to their medical use, Nandrolone esters are used to improve physique, performance, and are said to be the most widely used AAS products for such purposes. Read our full NPP profile story here.

What Are the Different Nandrolone Analogues of 19-Nortestoterone?

  • Nandrolone Caproate (Anabolin Depot)
  • Nandrolone Cyclohexanecarboxylate (Nor-Durandron, Norlongandron)
  • Nandrolone Cyclohexylpropionate (Andol, Fherbolico, Megabolin, Megabolin Retar, Pluropon, Proteron-Depot, Sanabolicum)
  • Nandrolone Cypionate (Anabo, Depo-Nortestonate, Dynabol, Nortestrionate, Pluropon, Sterocrinolo)
  • Nandrolone Furylpropionate (Demelon)
  • Nandrolone Hexyloxyphenylpropionate (Anador, Anadur, Anadurine)
  • Nandrolone Hydrogen succinate (Anabolico, Menidrabol)
  • Nandrolone Laurate (Clinibolin, Fortadex, Laurabolin)
  • Nandrolone Propionate (Anabolicus, Nor-Anabol, Nortesto, Norbyol 19, Pondus, Testobolin)
  • Nandrolone Sulfate (Keratyl, Nandrol, Nandain, Colirio Ocul Nandrol)
  • Nandrolone Undecanoate (Dynabolin, Dynabolon, Psychobolan)

As you can see above there were many types of Nandrolone that were marketed, but due to their lack of benefits vs side effects, these are nearly never used let alone heard of. There are also some Nandrolone products that were made but never hit the market, these are;

  • Bolmantalate (Nandrolone 17β-Adamantoate)
  • Nandrolone Acetate
  • Nandrolone Benzoate
  • Nandrolone Cyclotate
  • Nandrolone Formate

As you can see there are many examples of these compounds that have been trialed, but have not had the success of those which are commonly known to be the great examples of Nandrolone. These are;

So what can we say about Nandrolone Decanoate (Deca) and Nandrolone Phenylpropionate (NPP)?

Both of these compound structures have many great benefits but also can affect the body in slightly different ways. This is why we are going to discuss the differences between these two compounds, so that you can work out which one will be more suitable for you and your desired goals.

A FRIENDLY ADVICE to OUR blog visitors: with regards to the purchase of NPP, we recommend you not take the chance with underground labs that offer NPP steroid for sale in a form of raw or in liquids mixed in basements.

follow our “buy npp” guide to stay protected

The Nandrolone compound and its benefits

Nandrolone has many great benefits including; anti-aging properties, healing properties and protection properties. We have explained more about this different benefits within our other article “NPP Benefits”. But here we are talking about the benefits and differences used within the fitness industry for athletes and bodybuilders.

Whichever Nandrolone ester you choose to use within your cycle, you can receive these added benefits from this drug;

  • Protection or healing of your joints through increased synovial fluid production from the synovial membrane;
  • Protection or healing of your ligaments and tendons through the increased production in collagen within the body;
  • The increase in collagen also helps with repair of the muscle fibers meaning that you can gain muscle mass quickly and efficiently;
  • An increase in the Anabolic function and effects within the body for muscle growth and strength gain;
  • A low level of Androgenic side effects due to Nandrolone having no Estrogenic side effects.

These are just a few examples of the benefits that Nandrolone can bring into a user’s lifestyle. Now we need to talk about the differences between the added esters onto the Nandrolone hormone.

Nandrolone Deaconate (Deca)

Nandrolone Decanoate also known as “Deca” has an active half-life of roughly 12 days. This means that when you inject this substance, because it has the Decanoate ester attached to the Nandrolone hormone, it will not begin to hit the blood stream for 24-48 hours after administration and will carry on being active within the blood stream for nearly two weeks. This can be a benefit for most users as this means that they can inject less frequently, but because of this larger ester, changes are not felt by users anywhere from 3-4 weeks into their cycle. This is why long cycles are usually done when Deca is used within a cycle. Testosterone and Deca cycles are usually run at a minimum of 12-16 weeks, so that the full effects of the Nandrolone hormone can be received by the user.

Because of the long lasting acting half-life within the blood stream, Deca is known to add excess water weight to the user’s body. Some users crave the added water retention as this makes them look bigger in the gym and also gives them some added protection while lifting intensely heavy weight, due to the extra water retention acting as a protective agent around the body.

Deca was one of the great Arnold Schwarzenegger’s favorite steroids to use. This is because it can be run in long cycles at high dosages as it only enhances the Synthetic Testosterones Androgenic properties by 20%. A long cycle of Testosterone and Deca can mean a user can create monstrous gains in muscle mass and pass their plateau point to take and grow their physique to the next level. If you eat a massive surplus of calories and lift extremely heavy, Deca can make you jump up in overall size with dramatic effects. Although some of the added mass will be water weight, this helps to protect the body while lifting heavy weights, then after a user’s PCT and the water weight is lost, the user will still be huge in comparison to before starting their Deca cycle.

NPP (Nandrolone Phenylpropionate)

Nandrolone Phenylpropionate also known as NPP, is the Nandrolone hormone but with a shorter ester bond attached to it. This means that the active half-life of NPP is around 5-7 days. Being that NPP has a short ester attached, this substance can become active within the blood stream within a matter of hours but only stays active for less than one week. This means that more frequent injection must be done while running NPP within your cycle. Although these frequent injections can become a nuisance for some users, because of this short half-life time within the blood stream, users will not suffer from the added water retention that is associated with the Decanoate ester.

This is what makes NPP so special for many users, they can use it to build muscle while keeping their tendons and ligaments safe from the extra added stress of heavy weight, while also gaining leaner muscle mass without filling up with water or as it’s known “bloating”. Because of this, many users add a small amount of NPP within their cycles whether they are cutting or bulking, for the added protection that NPP can provide without the added water weight.

Although with NPP you are not going to increase in overall size and muscle mass as quickly as with Deca, but what you gain within your cycle will be more yours to keep, as when you hit your PCT stage, there will be much less water weight to loose! Also one of the main reason users often opt for the shorter ester is so that they can be more in control of their cycle. For instance, if you come across any unwanted side effects during your cycle, or your body does not tolerate this particular steroid well, then you only have a few days to wait before it is out of your blood stream.

While using a longer acting ester, if you do not want to continue for any reason, you will still have to wait sometimes two weeks before the active substance will leave your system.

Things to keep in mind while running either Nandrolone substance.

While both of these esters have different half-lives, depending on the dosage used with each, it is still a good idea to keep some Cabergrill (Caber) at hand.  


Because the Nandrolone hormone is favored due to its lower Androgenic effects, this does not mean that if used in high dosages every user will avoid side effects.

Because Nandrolone is a Progestin based substance. If any side effects occur such as Gynecomastia, this will be because of high Progestin levels.

Taking Caber at 0.5mg EOD can help to counteract these side effects if they become apparent. That being said, every individual is different and some can tolerate substances better than others, so the risk of coming across these side effects if used carefully is very small.

Also it is advised to keep your synthetic Testosterone levels the same or slightly above that of your Nandrolone dosage, this is to keep all the male parts fully functioning throughout your cycle.

So what is better: NPP or Deca?

Nandrolone is one of the great steroids that users should be happy to have integrated into their steroid stacks. But to decide between the two esters;

If you are looking for pure strength gain and power and just want to get as big as you can and are not worried about added water weight or the longer times on cycle, then Deca is your way forward!

If you are looking to keep an eye on your cycle and do shorter bursts, while looking to gradually increase your physique over time, then NPP will be more beneficial for you.

Also for people who suffer with injuries or bad ligaments and tendons, either ester will help you to repair and become pain free while lifting. With that said, if you are looking for pain relief for these tendons and ligaments but do not want to run a heavy cycle or increase your muscle mass or physique, then a small dose of NPP alongside a small dose of Testosterone should be able to provide these health benefits without turning you into the Hulk!

If you have any question regarding the NPP Steroid or any other main popular Anabolics feel free to send us a message. Our pro IFBB member (Professional bodybuilder) is always here to help you.

We provide support with creating cycles that will help you to reach any goal in any major sports and to stay away from possible side effects that Anabolic steroids usage may bring if used without proper instructions.