Half-life: 15 days
Detection times: 17-18 months
Anabolic Rating: 125
Androgenic Rating: 37


Deca-Durabolin contains the parent hormone – Nandrolone. Deca-Durabolin is actually an injectable steroid with the Deconoate ester attached to it, which slows the release of Nandrolone into the blood once administered. Other formats of Nandrolone exist, such as, NPP (Nandrolone Phyenlypropionate). NPP, as its commonly known, is a far faster acting variation of Nandrolone remaining active for only 3 days. Deca-Durabolin is one of the most popular anabolic steroids in existence and that includes orals and injectables.

Information on Deca-Durabolin was first published in 1960 by Organon, it was then manufactured and brought to the USA market in 1962. It was then used medically for the latter stages of breast cancer, weight loss and muscle wasting diseases, burns and trauma recovering. When first used it was designed in a 50mg/ml products, which was then increased to 100mg/ml and 200mg/ml respectively. Deca-Durabolin was one of the anabolic steroids that survived the cessation of anabolic steroids in the late 1990’s by the FDA and is still manufactured and produced medically even today.

Nandrolone is related to Testosterone but is not in the same class as other anabolic steroids, such as, Dianabol and Testosterone Enanthate. Deca-Durabolin is in the family that lacks the 19th carbon position of commonly knows as 19-Nor’s. Other compounds on this group are Trenbolone and Anadrol (Oxymetholone). These compounds can be extremely inhibitive to the HPTA and hinder endogenous testosterone function a great deal reducing the sex drive of the steroid user. These steroids are generally used also for mass, much like Deca and Tren.

Deca-Durabolin Dosages

Deca-Durabolin dosages will change due to a number of factors. These can include but are not limited to:

  • Age
  • Gender
  • Training History
  • Genetic Response
  • Past Steroid Usage
  • If Used In Combination

Typically, if you haven’t used Deca Durabolin before, then a low dosage is suggested. Deca is not run alone due to the loss of sex drive users can experience as Deca-Durabolin does not replace Testosterone lost during a steroid cycle, it merely suppresses it. This is why a form of Testosterone is also run with the Deca-Durabolin. Even for a first timer, a small replacement dosage of Testosterone is needed at around 150-250mg/wk. This replacement Testosterone dosage will prevent the user from experiencing the loss of se drive, cognitive function, confidence and ability to obtain and erection. Deca-Durabolin is dosed at around 200-250mg/ml and is suggested to be run at 250-400mg/wk as a first time user, or 200-250mg injected every 4-5 days, which is a slightly lower total dosage. This, combined with Testosterone is a solid cycle for mass but care needs to be taken and if you experience side effects, lower the dosage or stop use immediately. Due to Deca’s long half-life, it can be injected twice per week or once every 4-5 days.

Deca-Durabolin Cycle

Deca-Durabolin is one of the most popular anabolic steroids in existence and ever used. It has been run a magnitude of ways, but due to its long acting deconoate ester, there is an optimal way to run Deca-Durabolin. Deca-Durabolin can be injected once per week, or more ideally, twice. Deca is oil based anabolic steroid and can be mixed with other oil based steroids, such as, Testosterone Enanthate which also can be injected once or twice weekly. It is important that a Deca Durabolin cycle is not done alone and other support anabolic steroids are used to ward off the loss of sex drive Deca can onset in just a number of days.

Beginner Deca-Durabolin Cycle

wk 1-12 Testosterone Enanthate 500mg/wk
wk 1-2 Deca-Durabolin 400mg/wk
*Aromasin 10mg/ED
*HCG 500ius 2x week

Intermediate Deca-Durabolin Cycle

Wk 1-12 Testosterone Enanthate 500mg/wk
Wk 1-5 Dianabol 20mg every day
Wk 1-12 Deca-Durabolin 400mg/wk
*Aromaisn 10mg/ED
*HCG 500ius 2x week

Advanced Deca-Durabolin Cycle

wk 1-16 Sustanon 750mg/wk
wk 1-4 Deca-Durabolin 400mg/wk
wk 1-5 Dianabol 30mg/ED
wk 10-16 Winstrol 50mg/ED
wk 1-26 HGH 4ius/ED
*Aromaisn 10mg/ED
*HCG 500ius 2x week

Deca-Durabolin Site Effects

The side effects from Nandrolone, or Deca, are relatively mild in terms of acne and other androgenic side effects. Deca-Duraboin does not cause ‘roid rage’ like other injectable anabolic steroids, like Trenbolone do, nor does it cause hair loss, prostate issues in males or male pattern baldness (MPB).

However, its not all good I’m afraid. Deca is known to cause severe and rapid testosterone suppression even after doses of 100mg. After administration of only 100mg Deca Durabolin, endogenous testosterone was hypogondal levels for a full 4 weeks before returning to baseline. That means Deca should never be run alone and always in combination with other testosterone based anabolics. ‘Deca dick’ is a common side effects, when at leats a replacement dose of testosterone isn’t used. Erectile dysfunction can also be evident in users.

Deca Durabolin can also cause prolactin levels to climb, causing lactation of the nipples in males. This can be treated with Tamoxifen, or an aromatase inhibitor (AI) such as, Exemestane. To control levels of prolactin, a D2-agonist is used (dopamine agonist), such as Cabergoline. Although rare, its best to have Tamoxifen, an AI and Cabergoline on hand when running cycles of Deca.