GP Deca 250 (250 mg/ml) 10 ml (Geneza Pharmaceuticals)

2.6.2022 Legal Update
Deca Durabolin is legal in some countries, but requires a prescription to buy in others. Take no risks and find legal Deca Durabolin by pressing the button below.

GP Deca 250 250 mg/ml in an anabolic steroid manufactured by Geneza Pharmaceuticals. It comes in a package of 10 ml vial. The effective substance of GP Deca 250 is Nandrolone Decanoate, which is commonly known as Deca or Deca Durabolin after the original version made by Organon.

Is Geneza Pharmaceuticals GP Deca 250 legal to buy in the USA?

You can only buy Geneza Pharmaceuticals GP Deca 250 with a prescription. So unless you have a prescription for Nandrolone Decanoate, you can’t legally buy it. However, you can learn a way to buy legal Deca from our guide.

How does GP Deca 250 work?

GP Deca 250 works by increasing the progress of certain tissues in the body and has been shown to increase the oxygen-carrying capability of bloodstream by increasing hemoglobin and the size of red blood cells. Due to that, GP Deca 250 is ranked as among the best anabolic steroids for maintaining lean muscle mass and revitalizing durability and appetite over a long time frame. Many GP Deca 250 users claim that it has helped them gain 20-30 pounds of lean muscle in a cycle.

GP Deca 250 side effects

While GP Deca 250 can offer some huge gains in terms of muscle mass, there are some side effects too. The side effects can vary by individual due to the dose, duration of use, body chemistry, and what other steroids are being used at the same time.

One of the most common side effects with GP Deca 250 is the retention of water. This can result in the muscles not looking as well defined as they should be. It can also be a health risk due to the swelling in the extremities.

Acne is also a common side effect that both men and women may experience with the use of GP Deca 250. For those that already have trouble with acne it could trigger some long term issues. Even after the use of GP Deca 250 is discontinued the acne problem can continue for many months. The acne is likely to be on the face but it can also be on the back and shoulders.

GP Deca 250 dosages

For many individuals, 100 mg of GP Deca 250 injections every 7 to 10 days is all they need. They don’t have to get daily injections of it to heal up and to be able to increase their muscle mass. The injections should continue for a period of 12 weeks to get the full effect from them. However, the dose can be as much as 600 mg per week depending on the individual. And recommended GP Deca 250 dosage for women is typically 25mg-100mg.

What can GP Deca 250 be stacked with?

The chemical composition of GP Deca 250 allow it to be combined with other steroids like Dianabol, Anadrol, Sustanon 250 and Testosterone (cypionate, enanthate, propionate) for optimal results in a bulking cycle, while good cutting cycle could include Deca, Winstrol, and Testosterone.

Geneza Pharmaceuticals GP Deca 250 quick facts

  • Chemical Name: 19-nor-androst-4-en-3-one-17beta-ol]
  • Molecular Weight (Base): 274.4022
  • Molecular Weight (Ester): 172.2668
  • Formula (Base): C18 H26 O2
  • Formula (Ester): C10 H20 O2
  • Melting Point (Base): 122-124C
  • Melting Point (Ester): 31 – 32 C
  • Manufacturer: Geneza Pharmaceuticals, originally Organon
  • Release Date (in USA): 1962
  • Effective Dose (Men): 200-600mgs/week (2mg/lb of bodyweight)
  • Effective Dose (Women): 50-100mgs/week
  • Active Life: 15 days
  • Detection Time: Up to 18 months
  • Anabolic/Androgenic Ratio: 125:37

Specification: GP Deca 250 (250 mg/ml) 10 ml (Geneza Pharmaceuticals)

Product name

GP Deca 250


Geneza Pharmaceuticals

Common name

Deca Durabolin

Effective substance

Nandrolone Decanoate


250 mg/ml


10 ml vial

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