Deca (Nandrolone Decanoate) how to take, side effects

To date, nandrolone decanoate (DECA) has received the greatest distribution and popularity among injectable anabolic steroids.


  • 1 Historical excursion
  • 2 Properties of nandrolone
  • 3 Application
  • 4 side effects
  • 5 Dosage Methods
  • 6 How to combine deck with other steroids
  • 7 Use of a soundboard by women
  • 8 Conclusions

Historical excursion

Nandrolone (19-testosterone), related to anabolic steroids, was synthesized in the fiftieth year of the last century. The structure of all anabolic androgenic steroids is similar to the structure of testosterone (male sex hormone). However, artificial analogues contribute much better to building muscle mass (anabolic effect). Nandrolone is a classic representative of anabolics. Studies have shown that in terms of exposure to cellular receptors, which play an important role in the course of anabolic processes, it surpasses substances with a similar formula. This was the reason for the success of nandrolone. In Hungary, nandrolone decanoate was produced under the name Retabolil. In the United States and Western countries, it is known as Deca-Durabolin. One retabolil ampoule contains fifty milligrams of active substance. The effect after the use of nandrolone lasts two weeks. The properties of nandrolone determine its use in the recovery from injuries, the treatment of dystrophy, in the postoperative and post-infarction periods. When the drug enters the female body, there is an increase in hemoglobin, a decrease in bone loss of calcium. People whose activities are associated with constant physical activity (circus and ballet dancers), a busy schedule (show business stars), an injection course is sometimes necessary and becomes a way out of a difficult situation. Many doctors, biologists, physiologists consider the concept of the IOC (International Olympic Committee), which has declared a real doping war, to be incorrect and to some extent criminal. The fact is that the prohibition of nandrolone by this organization, which allegedly protects the health of athletes and fair competition, leads athletes to search for alternatives that include the use of poorly studied drugs that are more toxic and harmful to health.

Properties of Nandrolone

The structural difference between nandrolone and testosterone is the absence of the first methyl group 19 in the molecule, which caused the name 19-nortestosterone to spread. This gave the substance the ability to better stabilize androgen receptors. In other words, the duration of action of nandrolone is approximately two to three times higher than that of testosterone, and the longer the receptor remains activated, the greater the amount of protein synthesized by the cell. There is a negative point: free nandrolone is degenerated into dihydronandrolone (DHN), which is two to three times inferior to nandrolone in efficiency, impairs the ability of nerve fibers to transmit signals, which negatively affects neuromuscular stimulation and libido. True, nandrolone is not so active in the prostate, skin, therefore, athletes taking this drug are less prone to acne, prostatic hypertrophy, and baldness.

The effect of aromatase on the course of nandrolone is not so significant. But as a result of the chemical reaction, estrogen is still produced, albeit in small quantities. Do not forget about the progestogenic activity of 19-nortestosterone. Those with a total dose of more than six hundred milligrams per week are at risk of developing gynecomastia.


The choice of method of use of the drug is due to genetic differences. For some, nandrolone is simply a miracle cure. Others, whose body interacts poorly with the "long esters" of nandrolone, run the risk of acquiring health problems. This result is due to the presence of a large amount of 5-alpha-reductose in muscle fibers, when 19-nortestosterone can be replaced with phenylpropionate, or increased sensitivity to progesterone. In the second case, the way out of the use of nandrolone along with stanazolol or to prevent exceeding the weekly dose of more than three hundred to four hundred milligrams. For athletes who do not have the above features, the use of nandrolone will greatly facilitate weight gain. The purpose of testosterone and nandrolone is to activate satellite cells and increase IGF-1, which stimulate muscle hyperplasia, but the dosage of the latter should exceed six hundred milligrams per week. Based on the properties of nandrolone, capable of retaining water, its use during the "drying" before the competition is impractical.

Previously, it was believed that the retention of fluid in the body under the influence of nandrolone is one of the factors in the accumulation of water in articular bags, which is why joints experience a beneficial effect. In fact, the mechanism of functioning of 19-nortestosterone is somewhat more complicated.

The drug does not cause an additional influx of water into the articular bags. Thanks to nandrolone, water simply does not leave them. This process is explained by the fact that nandrolone is a very strong progestin, which has a fifth of the power of progesterone, and can turn into estradiol, which is responsible for retaining water in the tissues. Assessing the properties inherent to nandrolone, one cannot but note its superiority over other drugs with antiestrogenic (drostanolone) and antiprogestagenic (stanozolol) activity. Drawing up a cycle of trenbolone, stanozolol, drostanolone can become a factor in causing harm to the joints during an intense training process. Do not forget: if a certain concentration of estrogen and progestin is exceeded in the blood plasma, then an anti-inflammatory effect is observed. Nandrolone has progestogen activity, the ability to convert to estradiol, which determines the possibility of a beneficial effect on the joints. In this regard, nandrolone is significantly superior to oxymetholone, methandrostenolone, testosterone.

Nandrolone not only affects the increase in muscle mass. When it is taken, strength indicators significantly increase. Most athletes with a weekly dose of at least four hundred milligrams confirm this. True, there is one very important negative factor: the suppression of 19-nortestosterone production of endogenous testosterone leads to a deterioration in the conductivity of nerve fibers and impaired erectile function. Not everyone is ready to sacrifice their intimate life. The way out of the situation is seen in the use in combination with nandrolone of some strong androgen, for example, testosterone.

Side effects

When using a soundboard, there are usually no serious side effects. However, when the weekly dosage exceeds four hundred milligrams, blood pressure often rises. Against the background of a deterioration in blood coagulability, this leads to nosebleeds, poor healing of wounds, the work of the sebaceous glands in forced mode, acne, and severe headaches. The maximum increase in dose is fraught with a malfunction of the testicles, which begin to produce less testosterone, which causes a delay in the release of gonadotropins by the pituitary gland.

High progestogen activity of nandrolone leads to erectile dysfunction and gynecomastia.

Dosage methods

The achievement of a noticeable effect from taking nandrolone is possible at dosages of two hundred milligrams per week or more. Some professional-level athletes have prescribed a daily dose of eight hundred milligrams. It is difficult to say how appropriate this is today. Indeed, in recent years there has been a tendency to abandon nandrolone decanoate. Bodybuilders of a world level consider this drug to be exhausted and morally obsolete. However, people who are not thinking about sporting achievements and simply wanting to have a beautiful body can be advised to set an upper limit for themselves at one gram of nandrolone per week.

Nandrolone decanoate has a fairly long half-life, so it is advisable to stay on one injection per week. True, there is another opinion. Many believe that to maintain a stable level of the hormone, it is better to inject long-lived drugs more often into the body.

How to combine deck with other steroids

Not so often you can meet people who have chosen nandrolone as the only steroid in the cycle. Rather, it is the lot of testosterone and trenbolone. Synergists are usually combined. An effective regimen is the use of nandrolone with methandrostenolone. Even more effective are those who include testosterone in a complex with nandrolone (the ratio of nandrolone to testosterone is 1: 2). The second method is also a kind of insurance against potential problems. The combination of the three drugs listed above is the best option for those who want to gain weight in the shortest possible time.

It is worthwhile to warn the zealous followers of dubious ideas, taking on faith everything that they are told. The use of nandrolone with other progestins (anapolone, trenbolone) is dangerous and can lead to negative consequences, cause the abandonment of anabolic steroids for a long time.

Application of a soundboard by women

In the middle of the last century, nandrolone was widely used in the treatment of women. Moreover, representatives of traditional medicine considered it a rather effective drug. Then, athletes drew attention to 19-nortestosterone and actively used it until the nineties, until studies conducted by Heinonen and Gusens cast a shadow on the drug. The first experiment consisted in women taking nandrolone decanoate fifty milligrams every three to four days. As a result, half of the subjects began to experience the phenomenon of virilization. The second experiment did not lead to this. True, nothing was reported regarding the magnitude of the doses. Of course, women taking one hundred milligrams of nandrolone decanoate per week raises questions, but limiting the dose to thirty milligrams administered once every two weeks can be considered acceptable. This fact was proved by an experiment in 1996, when, with a similar method of receiving, virilization phenomena were not recorded. Lovely ladies, who nevertheless chose the deck as a means of achieving the goal, I would like to advise you not to rush to extremes and start with a dose of fifty milligrams once every ten days, gradually increasing it to seventy-five to one hundred milligrams in the same period of time. The very first signs of virilization should be a signal to stop taking the drug.


  • The deck is not only good for mass gain, but also increases strength.
  • Nandrolone decanoate implies a course of administration that lasts for a rather long time (a minimum of six weeks).
  • Nandrolone has beneficial effects on the joints.
  • The toxic effect of nandrolone on the liver is minimal.
  • Athletes who are going to take part in competitions involving a doping test in the coming year should avoid taking nandrolone.
  • Nandrolone is less likely to cause prostatic hypertrophy, baldness, and acne than testosterone.
  • The pronounced progestogenic activity of nandrolone should encourage athletes to take dose selection issues seriously. If it exceeds four hundred milligrams per week, then the risk of gynecomastia and a weakening of libido increases. The use of dostinex, bromocriptine, and proviron is intended to eliminate these unpleasant side effects.
  • It is advisable to resort to a scheme for combining a deck with turinabol, methane, oxandrolone, winstrol and other so-called soft preparations.
  • Take nandrolone decanoate in combination with other progestins (anadrol, trenbolone) is unacceptable.