Brand: Zhengzhou Pharmaceutical
Product Code: 0252
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Deca-Durabolin is the brand and trade name for the anabolic steroid Nandrolone. Specifically, Deca-Durabolin is the trade name for Nandrolone Decanoate – the decanoate ester variant of Nandrolone. “Deca”, as it is informally known as among bodybuilders, ranks among the top three anabolic steroids where it is the second most popular and widely utilized anabolic steroid in existence. First place is held by none other than Dianabol (Methandrostenolone), and third by Winstrol (Stanozolol). There is good reason for why Deca-Durabolin is so well liked by bodybuilders and athletes, and is even held in high regard by the medical establishment as well.

Nandrolone Decanoate was first introduced within the scientific community in 1960, making it among the first handful of pioneer anabolic steroids developed. It was developed by Organon, and not long afterwards in 1962 it was released onto the prescription drug market as Deca-Durabolin. Not many are aware, however, that Nandrolone did exist a few years prior in 1957, as the fast-acting Nandrolone Phenylpropionate ester variant. Nandrolone Phenylpropionate did gain significant popularity, but unfortunately its very short half-life imposed limitations on its use, requiring every-other-day injections at a minimum, and so Nandrolone was reinvented as Deca-Durabolin with the decanoate ester affixed to it. The decanoate ester grants Nanadrolone a much longer half-life of approximately 15 days as opposed to the phenylpropionate variant’s 4 days (approximate).

It enjoyed extensive application as a medicinal drug among the medical establishment over time and gained popularity among bodybuilders and athletes for its purportedly ‘mild’ nature. There is some truth to this, but much misunderstanding and myth as well, which will be explained shortly. Deca is only slightly stronger than Testosterone where anabolism is concerned, with a strength rating of 125. By comparison, Testosterone’s anabolic strength rating is 100. However, it possesses a very low androgenic rating of 37, making it favorable for those who are either sensitive to or with to avoid androgenic side effects. Additionally, Nandrolone possesses very low Estrogenic activity and binds very poorly with the aromatase enzyme, which is the enzyme responsible for the conversion of androgens into Estrogen.Only about 20% of Nandrolone is converted into Estrogen in comparison to Testosterone’s conversion rates. The fact that Deca is a Progestin (as all 19-nor compounds are) is what contributes to this low estrogenic activity. Looking further into this, we can also see that Nandrolone experiences aromatization into Estrogen in the liver, but in areas of the body where there is normally a high degree of Estrogen conversion (in fat tissue, for instance), Deca is considerably resistant here.

Deca is classified as a 19-no compound because it lacks the 19th carbon that Testosterone possesses, making it a Progestin and therefore express an affinity for the Progesterone receptor. This can present some potential side effects and issues that are unique to 19-nor compounds, and are unseen in most other anabolic steroids.

One particular point to address here is the common claim that Deca-Durabolin is good for the joints and bone tissue, which is indeed true. However, the proposed explanations that circulate among athletes and bodybuilders as to why this is the case are often incorrect myths and misconceptions. Deca does not “lube the joints”, “store water in connective tissue and joints”, or any other such preposterous nonsense. In actuality, Nandrolone promotes very significant increases in collagen synthesis, more so than most other anabolic steroids. Other studies have also demonstrated an ability for Deca to also promote vast increases in bone mineral content. What does all of this mean for the athlete? It means that bodybuilders and athletes can experience positive effects on connective and joint tissue, strengthening them during bulking, strength gaining, and mass gaining cycles. It grants them the ability to lift heaver weight with an enhanced recovery of bone and connective tissue, as well as a greater tolerance to the stressors on joints and bone that are produced by intense exercise and resistance training.

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