Nandrolone Decanoate – Long-acting
Nandrolone phenylpropionate – Short-acting

A key effect of Deca/Nandrolone is that it causes the muscle cell to store more nitrogen than it releases. Therefore it achieves a positive nitrogen balance. We can attribute its large popularity to its numerous possible applications and its mostly positive results. They clearly define the main characteristic of Naandralone in the package insert by Organon GmbH Company: “Nandrolone has a distinct anabolic effect along with a positive nitrogen balance.” As described in a previous chapter, nitrogen, in bonded form, is part of protein. Nandrolone causes the muscle cell to store more nitrogen than it releases. As a result, it achieves a positive nitrogen balance. A positive nitrogen balance is synonymous with muscle growth since the muscle cell, in this phase, assimilates (accumulates) a larger amount of protein than usual.

The same manufacturer’s package insert points out: “The occurrence of a positive nitrogen balance and the protein building effect, only takes place if enough calories and proteins are consumed.” One should know this since, otherwise, satisfying results with Deca cannot be obtained. They link the highly anabolic effect of Deca to a moderately androgenic component. Athletes get good gains in muscle mass and strength. Most athletes notice considerable water retention. It is as distinct as that with injectable testosterone. In high doses, it can also cause a smooth watery appearance.

Connective Tissue

Deca also stores more water in the connective tissues. It can temporarily ease or even cure existing pain in joints. This is especially good for those athletes who complain about pain in the shoulder, elbow, and knee; they can often enjoy pain-free workouts during treatment with Deca. Another reason for this is that Deca blocks the cortisone receptors, thus allowing less cortisone to reach the muscle cells and the connective tissue cells. Athletes use Deca, depending on their needs, for muscle buildup and in preparation for a competition.

Dosage of Deca

Deca is suitable, even above average, to develop muscle mass since it promotes the protein synthesis and simultaneously leads to water retention. The optimal dose for this purpose lies between 200 and 600 mg/week. Scientific research has shown that the intake of 2 mg/pound body weight can obtain the best resultThose who take a dose of less than 200 mg/week will usually feel only a very light anabolic effect which, however, increases with a higher dosage. The anabolic and consequent buildup effect of Deca, up to a certain degree, depends on the dosage. Between approx. 200 to 600 mg/week, the anabolic effect increases almost proportionately to the dosage increase.

Dosage for a positive effect on Deca

If more than 600 mg/week are administered, the relationship of the positive to the negative effects shifts in favor of the latter. In addition, at a dosage level above 600 mg/week, the anabolic effect no longer increases proportionately to the dosage increase, so that 1000 mg/week do not guarantee significantly better results than 600 mg/week.

Most male athletes experience good results by taking 400 mg/week. Steroid novices usually need only 200 mg/week. Deca works very well for muscle buildup when combined with Dianabol and Testosterone. The famous Dianabol/Deca stack results in a fast and strong gain in muscle mass. Most athletes usually take 15-40 mg Dianabol/day and 200-400mg Deca/week. Even faster results can be achieved with 400 mg Deca/week and 500 mg Sustanon 250/week. Athletes report an enormous gain in strength and muscle mass when taking 400mg Deca/week, 500 mg Sustanon 250/week, and 30 mg Dianabol a day. Deca is a good basic steroid which, for muscle buildup, can be combined with many other steroids.


Although Deca is not an optimal steroid when preparing for a competition. However many athletes also achieve good results during this phase. Deca is a long-term anabolic. The risk with a higher dosage is retaining too much water. This problem can usually be avoided when the athlete is injected with the faster-acting Deca100, which contains the substance nandrolone-phenylpropionate. A conversion into estrogen, that means an aromatizing process, is possible with Deca but usually occurs only at a dose of 400 mg +/week.

During competitions with doping tests, Deca must not be taken. You can detect the metabolites in the body with a urine analysis up to 18 months later. Those who do not fear testing can use Deca in a dosage of 400 mg/week. The androgens contained in 400 mg/ week also help to accelerate the body’s regeneration. The risk of potential water retention and aromatizing to estrogen can be successfully prevented. Using a combining of Proviron with Nolvadex. A preparatory stack often observed in competing athletes includes 400 mg/week Deca-Durab0lin, 50 mg/day Winstrol, 228 mg/week Parabolan, and 25 mg/day Oxandrolone.

Side Effects of Deca

Although the side effects with Deca are relatively low with dosages of 400 mg/week, androgenic caused side effects can occur. Most problems manifest themselves in high blood pressure and in prolonged time for blood clotting, which can cause frequent nasal bleeding and prolonged bleeding of cuts, as well as increased production of the sebaceous gland and occasional acne. Some athletes also report headaches and sexual overstimulation. When men take very high doses over a long period, spermatogenesis can be inhibited. In other words, the testes produce less testosterone. The reason is that Deca, like almost all steroids, inhibits the release of gonadotropin from the hypophysis.

Women with a dosage of up to 100 mg/week usually experience no major problems with Deca. At higher dosages androgenic-caused virilization symptoms can occur, including deep voice (irreversible), increased growth of body hair, acne, increased libido, and possibly a clitoral-hypertrophy. Women who experience problems 50 mg/week, better off taking faster-acting Durabolin.

Deca 100/Nandrolone-Phenylpropionate dosage

Unlike the long-acting Nandrolone, when Durabolin is administered once or twice weekly in a dosage of 50 mg, no concentration of undesired amounts of androgens occur.  Since most female athletes get on well with a Nandrolone dose of 50 mg+/week it is usually combined with Oxandrolone 10 mg/day. Taking both compounds in a low dosage they are only slightly androgenic. Masculinizing side effects are rare. Nandrolone, through its increased protein synthesis, also leads to a net muscle gain and Oxandrolone, based on the increased phosphocreatine synthesis, leads to a measurable strength gain with very low water retention. Other variations of administration used by female athletes are Nandrolone and Winstrol tablets, as well as Nandrolone and Primobolan S tablets. 

Since Deca-Durabolin has no negative effects on the liver it can even be used by persons with liver diseases. Exams have shown that a combined application of Dianabol/Nandrolone increases the liver values which, however, return to normal upon discontinuance of the 17-alpha alkylated Dianabol and continued administration of Nandrolone. Even a treatment period with Nandrolone over several years could not reveal a damage to the liver. For this reason, Nandrolone combines well with Androxon and since Androxon is not broken down through the liver and thus the liver function is not influenced either. Older and more cautious steroid users, in particular, like this combination.

Deca300 by Ciccone 300mg/ml/10ml
DECA Phenylpropionate
Deca Phenylpropionate
By V-Med
Deca 300
Deca Undecanoate By V-Med 300mgs/ml/10ml
Deca300 by Nomad 300mg/ml/10ml
Deca300 by Nomad







Deca 350 Matrix
Deca 350 Matrix
by V-Med
100mgs Phenylpropionate/ml
250mgs Nandrolone Undecanoate/ml
Deca-Durabolin by Organon 100mg/amp
Deca-Durabolin by Organon 100mg/amp
Greek Deca by Norma 100mg/ml/2ml
Greek Deca by Norma