Deca Durabolin

Deca-Durabolin is the trade name (brand) of the anabolic and androgenic steroid (AAS) Nandrolone. More specifically, Deca Durabolin (shortly Deca) is the brand name for Nandrolone Decanoate. This is the attached ester chain called Decanoate to Nandrolone.

  • The first Nandrolone version was Nandrolone Phenylpropionate (NPP) sold under the brand name Durabolin. Nonetheless, when the Nandrolone Decanoate (Deca) appeared, it got way more popular and widely used than NPP.


That’s because Deca Durabolin is having a much slower release time in the system after it got administered. Therefore, it doesn’t need to be administered as often. Plus to that, Deca is considered much better tolerated than NPP because it has an even more oily solution. This also reduces the chances of PIP (Post Injection Pains).


  • Nandrolone Phenylpropionate (NPP) – Durabolin half-life of 3 days. Must be administered every other day.
  • Nandrolone Decanoate (Deca) – Deca Durabolin half-life of 15 days. Must be administered once per week.

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With all this being said, NPP (Durabolin) is still used in bodybuilding nowadays. However, Deca Durabolin is a much more popular and widely used version of Nandrolone.


Deca Durabolin Profile

What really matters is the chemical name (active substance) which remains Nandrolone. There are various different brand/trade names of Nandrolone. Deca Durabolin remains the most popular one.

In the end, Nandrolone is an anabolic and androgenic steroid that comes only as an injection. There are no pills/tablets versions of Nandrolone. If you see someone claiming to sell such tablets – they are liars!

Deca Durabolin – Nandrolone has an anabolic rating of 125 and an androgenic rating of 37.

It is a progesterone-like hormone that converts into estrogen at about a 20 % conversion rate of that of testosterone.

Nandrolone is a 19-nor steroid similar to Trenbolone. That’s why it has the ability to increase prolactin levels.


Deca Durabolin Benefits

This anabolic and androgenic steroid is considered one of the best for bulking cycles. It is often used as an “anchor” of a steroid cycle. It means that by adding Deca, you’re making the overall steroid cycle way more effective. Old-school bodybuilders were adding Nandrolone Decanoate to their cycles, increasing the effectiveness of the cycle but not increasing the side effects.

Deca Durabolin is particularly good when talking about joints and bone health. In fact, Deca is considered by far the best steroid for joints/bones and ligaments health. It “lubes” the joints making them stronger and healthier. That’s why people with joint pains (dry joints) greatly benefit if adding Deca to their regimen.

Nandrolone increases bone mineral content and increases collagen synthesis too. But those are just some things that Deca steroid is the best at. Deca Durabolin is an amazing steroid for increasing protein synthesis and nitrogen retention. This makes an anabolic environment allowing you to grow muscles, get stronger and even burn some fat.


Deca Durabolin Side Effects

It is important to remember that everything has negative side effects, especially when talking about steroids. Deca Durabolin is not an exception. Abusing it would lead to nasty issues.

However, Nandrolone Decanoate is a very well tolerable steroid by most people. That’s why many people add it to their cycles and they don’t increase the risks of negative side effects. When used correctly, it is likely to offer no adverse effects.

Yet, some side effects are still possible. Generally, they are related to high prolactin and high estrogen levels. It could lead to gynecomastia, water retention, erectile dysfunction, bloating, and various others. Androgenic side effects are possible too. But generally, many people consider Deca to be one of the safest steroids in terms of androgenic issues. Examples include acne, hair loss, aggression, and others.

Nandrolone is not C17AA so is not liver toxic. However, it is suppressing your HPTA. Please prepare a PCT plan after each cycle with Deca Durabolin.

Generally, it could also have a risk for your cholesterol health and offer some cardiovascular strain. You can control such issues with a proper lifestyle. And a proper administration schedule.

Deca Durabolin Administration

Never run Nandrolone Decanoate alone. We highly recommend it to stack with Testosterone. Often, you can add other bulking compounds too, such as Dianabol or Trenbolone.


Use Deca Durabolin once a week. Some professionals use it in 2 doses split up weekly when doses are very high.

Deca dosage is commonly ranging 400-600 mg a week. But doses of 100-200 mg/week works as a booster, for therapeutic needs, or for cutting. But doses as high as 1000 mg/week are helpful for heavy bulking cycles for professionals.

Nandrolone kicks in the system after about 6 weeks of use. That’s why Deca Durabolin cycle length is rarely any less than 10 weeks. Commonly 12-14 weeks or up to about 16 weeks.

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