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Deca Durabolin

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Deca Durabolin, Nandrolone Decanoate.

Deca Durabolin was introduced by Organon in the early 1960s. It hit the market as an injectable steroid available in various strengths, most common being 50 mg/ml and 100 mg/ml. Deca Durabolin has over the years emerged as the most widespread and most commonly used injectable steroid. Although Nandrolone Decanoate is still contained in many generic compounds, almost every athlete connects this substance with Deca Durabolin.

Deca's immense popularity can be attributed to wide range of applications and for its mostly positive results. Its driving feature is clearly defined in the package insert by Organon GmbH Company: 'The distinct anabolic effect of Nandrolone Decanoate is mirrored in the positive nitrogen balance.'

Nitrogen, in bonded form is part of protein. Deca Durabolin causes the muscle cell to store more nitrogen than it releases, so that a positive nitrogen balance is achieved. This positive balance is synonymous with muscle growth as the muscle cell, in this growth phase, absorbs a larger amount of protein than usual. It is however clearly pointed out on the package insert that a positive nitrogen balance and the inherent protein building effect occurs only with supply of enough calories and proteins.

The high anabolic effect of Deca Durabolin is linked to a moderately androgenic component, and this makes sure that a good gain in muscle mass and strength is obtained. Most athletes also notice to their dissatisfaction, considerable water retention at high doses that gives muscles a smooth and watery appearance. On the other hand, since Deca Durabolin also stores more water in the connective tissues, it can temporarily ease or even cure existing pain in joints and contribute to a heavier workout. Deca also blocks the cortisone receptors, allowing less cortisone to reach the muscle cells and the connective tissue cells. Athletes freely use Deca, for muscle buildup and in preparation for a competition.

Deca Durabolin is great for developing muscle mass since it promotes protein synthesis and simultaneously leads to water retention.


Deca Durabolin - Dosage

Optimal dose is between 200 and 600 mg/week. Research has shown that best results can be obtained with the intake of 2 mg/pound body weight. The anabolic and consequent buildup effect of Deca Durabolin in the range of approximately 200 to 600 mg/week, increases almost proportionately to the dosage increase.

If more than 600 mg/week is administered, one starts noticing the negative effects. Moreover, at a dosage level above 600 mg/week, the anabolic effect no longer increases proportionately to the dosage increase, so that even 1000 mg/week does 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 Durabolin - Side Effects

Side effects of Deca Durabolin are relatively low at dosages of 400 mg/week, but androgenic-caused side effects can occur. Most problems manifest themselves in high blood pressure and a prolonged blood clotting time, and these can cause frequent nasal bleeding and excessive bleeding from cuts, increased production of the sebaceous glands and occasional acne. Some athletes also report headaches and sexual over-stimulation.

When very high dosages are taken over a prolonged period, spermatogenesis can be affected in men, i.e the testes produce less testosterone. This is because Deca Durabolin, like almost all other steroids, inhibits the release of gonadotropin from the hypophysis.

Deca Durabolin and Women

Women on a dosage of up to 100 mg/week usually experience no major problems with Deca Durabolin.

At higher dosages androgenic-caused virilization symptoms including deep voice (irreversible), increased growth of body hair, acne, increased libido, and possibly clitorishypertrophy may occur.

As most female athletes go well with Deca Durabolin a dose of Deca 50 mg+/week is usually combined with Anavar 10 mg+/day. Both compounds, at a low dosage, are only slightly androgenic and ensure masculinizing side effects only rarely occur.

Deca Durabolin - In Combination

Deca is a great basic steroid for muscle buildup and can be combined with many other steroids.

Deca Durabolin combines well for muscle buildup with Dianabol (D-Bol) and Testoviron Depot. The famous Dianabol (D-Bol)/Deca stack results in rapid and strong gain in muscle mass. Most athletes usually take 15-40 mg Dianabol (D-Bol)/day and 200-400 mg Deca/week.

Faster results can be achieved with 400 mg Deca/week and 500 mg Sustanon/week. Athletes report an enormous gain in strength and muscle mass when taking 400 mg Deca/week, 500 mg Sustanon/week, and 30 mg Dianabol (D-Bol)/day.

Although Deca is not the optimal 'competition' steroid, many athletes achieve good results during this prep phase. As Deca Durabolin is a long-term anabolic, there is risk that with a higher dosage, the competing athlete could retain too much water. Combining Proviron with Nolvadex can prevent water retention and aromatizing to estrogen. A conversion into estrogen, - aromatization - is possible with Deca-Durabolin but this usually occurs only at a dose of 400 mg/week.

In competitions with doping tests Deca is a strict no-no as the metabolites in the body can be proven in a urine analysis up to 18 months later. Those who do not fear dope testing can use Deca as a high-anabolic basic compound in a dosage of 400 mg/week. The androgens contained in 400 mg/week also help to accelerate the body's regeneration. The preparatory stack often observed in competing athletes includes 400 mg/week Deca-Durabolin, 50 mg/day Winstrol, 228 mg/week Parabolan, and 25 mg/day Anavar.

Deca, through its increased protein synthesis, leads to a net muscle gain and Anavar, based on the increased phosphocreatine synthesis, facilitates a measurable strength gain with very low water retention.

Other variations of administration used by female athletes are Deca Durabolin and Winstrol tablets, as well as Deca Durabolin and Primobolan S-tablets. Since Deca Durabolin has no negative effects on the liver persons with liver diseases can safely use it. Studies reveal that a combined application of Dianabol / Deca Durabolin increases the liver values which, however, return to normal upon discontinuance of the 17-alpha alkylated Dianabol and continued administration of Deca Durabolin. Even a treatment period with Deca Durabolin spread over several years did not reveal any damage to the liver.

For this reason Deca Durabolin also combines well with Andriol (240-280 mg/day) since Andriol is not broken down through the liver and thus the liver function is not affected.


Deca Durabolin is relatively costly. In the U.S. a 50 mg ampule costs approx. $10 - 12. A 200 mg/ml ampule costs $19.49. As the weekly dose is around 200-400 mg/week, extended treatment can prove to be very expensive.

Dutch and Greek Deca Durabolin in strengths of 200 mg/2 ml ampules, cost around $30 per ampule on the black market. Those who can access the generic Greek 50mg products such as Anaboline, Ziremilon, or Extraboline, receive a product of equally good quality at a slightly lower price.

There are doubts whether Russian Retabolin and the Hungarian Retabolil are of good quality. But price-wise they are very interesting.

Its great popularity and constantly high demand have spawned many fakes of Deca Durabolin. The most popular ones include the brown 10 ml/injection vial 'Nandrolone Decanoate' by International Pharmaceuticals and the 30 ml and 50 ml brown glass vials supposedly by the manufacturer 'National Products CA-U.S.'

Deca fakes are mostly sold in brown and white 2 ml glass ampules with supposedly 100 mg/ml. In Europe, original Deca Durabolin is never sold in a glass ampule or vial with more than 2 ml injection solution.

The ampules and vials by Organon Company all come with an adhesive label or sticker and no simple stamp imprint which, as on most fakes, is directly placed on the glass. If somebody offers you individual ampules without its appertaining packaging you should be very skeptical about the compound (and salesperson).

The drug 'Nandrolone Decanoate' by International Pharmaceuticals comes with an adhesive label on the 10 ml vial and is individually packaged, but it is still a fake. There are also several fakes of the Dutch Deca Durabolin '100' by Organon Company. It is relatively easy to recognize the original since it comes in a prickthrough ampule with a red cap. The Greek Deca Durabolin is bought by dealers in Crete in large quantities with little difficulty, since Crete receives a certain yearly allotment from the Greek mainland. Its subsidy by the government allows for a low price. The Mexican Deca unfortunately is manufactured only in a 50mg version which means quite voluminous injections for its user. Since it is not as simple to imitate the Redi-ject versions one can assume that he or she is dealing with an original Deca compound if it originated in Mexico. There are always two Redi-ject injections in one original package. The ampules by Organon are of brown glass, with an aluminum cap and a white label with blue and black print. The probability of receiving an original Mexican Deca is very low.