Nandrolone Decanoate (Deca-Durabolin)

Deca-Durabolin is the most common and most used injectable steroid. The addiction of athletes to it is explained by the various possibilities of its use and tangible results. The strong anabolic effect of Deca-Durabolin is combined with a small androgenic component, as a result of which Deca provides good gains in muscle mass and strength. Read more here

Dosages of the drug

The optimal dosage is in the range of 200-600 mg per week. Scientific experiments have shown that the best results are obtained when taking 4 mg of the drug per 1 kg of body weight per week. Those who choose a dosage of less than 200 mg per week feel only a very weak anabolic effect, which increases significantly with increasing doses. In the range of 200-600 mg per week, the anabolic effect increases almost in direct proportion to the dosage.

Those who take more than 600 mg per week shift the ratio of positive-negative effects towards side effects, because in this case, the anabolic effect no longer increases in proportion to the dosage, i.e. 1000 mg per week will not bring better results than 600. For beginners in steroid courses it is better to be content with 200 mg per week.

Combination with other steroids

Deca-Durabolin is a good base drug that can be combined with other steroids to build muscle mass, best of all with Dianabol and Testosterones. The famous Dianabol-Deca combination provides a rapid increase in muscle volume and strength. Most athletes generally take 15-40 mg of Dianabol per day and 200-400 mg of Deca per week.

Even greater results are achieved with a joint intake of 400 mg Deca and 500 mg Sustanon-250 per week.

And finally, athletes who take 400 mg of Deca, 500 mg of Sustanon-250 per week and 30 mg of Dianabol per day tell about “huge gains”.

Although Deca-Durabolin is not an optimal steroid for competition preparation, many athletes have good results during this period. Before competitions with doping control, you should not take Deco, because the decomposition products of the drug in the body are found in the urine even after several months

Those who are not threatened by such controls can use Deco as a base drug with a strong anabolic effect at a dosage of 400 mg per week.

Side effects

Possible aromatization phenomena and water retention in the body (by the way, when taking Deca, manifested to a much lesser extent than when taking injectable Testosterones) can be minimized by taking Nolvadex and Proviron together.

The combination often used by bodybuilders in preparation for a competition looks like this: Deca-Durabolin 400 mg per week plus Winstrol 50 mg per day plus Parabolan 228 mg per week plus Oxandrolone 25 mg per day.

Side effects when taking Deca are relatively small, but still, in dosages of more than 400 mg per week, aromatization and other phenomena caused by too high levels of androgens in the body are quite possible – high blood pressure, increased activity of the sebaceous glands, progressive acne, slowing down of the blood clotting process, which can often be reflected in frequent nosebleeds and bleeding long-lasting wounds.

Some athletes report headaches and sexual hyperstimulation. When very high doses are taken for a long time, spermatogenesis may also be delayed in men, i.e. the testes will produce less testosterone because Deca-Durabolin, like almost all steroids, delays the release of gonadotropins from the pituitary gland.

How should women use the drug? 

Women at dosages in the range of 200 mg per week usually do not have much of a problem with Deca. In the case of using higher dosages, masculinization phenomena may occur: a decrease in voice timbre (often irreversible), increased hair growth, acne, increased libido, and sometimes clitoral hypertrophy.

For women who have similar problems with Deca-Durabolin, even at a dosage of 50 mg per week, it is better to use the faster and milder Durabolin. With one or two injections of 50 mg Durabolin per week, undesirable accumulation of androgens, unlike the long-acting Deca, is not observed. Most athletes easily “cope” with Deca-Durabolin and combine it with Oxandrolone: ​​50 mg Deca per week and 10 mg Oxandrolone per day.

Both drugs are weakly androgenic at low dosages, so masculinization is rare. Deca, through increased protein synthesis, provides muscle growth, and oxandrolone, due to increased synthesis of creatine phosphate, provides an increase in strength with very little water retention.

Other commonly used options for bodybuilders are Deca with Winstrol tablets plus Primobolan tablets.

Because Deca-Durabolin does not have a negative effect on the liver; it can also be used for diseases of this organ. Studies have shown that the combined use of Deca-Durabolin and Dianabol leads to an increase in liver secretion.

In contrast to the above, it should be noted that with massive death of the liver tissue, infectious hepatitis, pain is completely absent. Together with the liver tissue, nerve endings also die off. Therefore, the person does not feel any pain. Conclusion: if, as a result of taking anabolic steroids, pain appears in the right hypochondrium, this does not indicate destructive processes in the liver, but rather the opposite.

It is necessary to try first to apply hepatoprotectors, and only then to reduce the doses of the drugs used to acceptable values, which nevertheless normalizes when you stop taking 17-alpha-alkylated Dianabol, while continuing to take Deсa. Even with the duration of treatment with Deca-Durabolin for several years, liver damage is not detected. Liver damage is never found. D

Even with jaundice caused by an overdose of anabolic steroids, despite the excess of bile pigments in the blood, the liver tissue is in perfect order. This even applies to such traditionally highly toxic anabolic steroids for the liver, which is methandrostenolone. Therefore, for those with liver problems, the optimal combination is to take Deca with Andriol (240-280 mg per day), because Andriol is excreted from the body through the liver and therefore does not affect its functioning. This combination is a favorite of mature and cautious steroid users.

Another positive quality of Deka is that it accumulates water in the connective tissue and can relieve or completely eliminate joint pain. Therefore, athletes with pain in the shoulders, elbows or knees can exercise painlessly while taking Deca-Durabolin. 


At the moment, there are quite a few drugs on the Canadian market that have the active ingredient Nandrolone Decanoate. As for Retabolil, so beloved in Russia, it is not a big secret that since the beginning of the 90s. of the last century, numerous “craftsmen” have set up the production of bottled in ampoules under the Retabolil brand of all sorts of things – from absolutely inert sunflower oil and medical ether to something incomprehensible, but testosterone-containing. Now dealers swear that, although Retabolil is self-made, it is “working” and allegedly even purchased by pharmacies, but go and check, is there nandrolone or something else?

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