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  • Substance: Nandrolone Decanoate
  • Active Dosage: 200mg/ml
  • Form: 10ml multiuse vial
  • Category: Injectable
  • Classification: Anabolic Steroid
  • Half Life: 6-7 days
  • Dosage: men 300-600 mg/week
  • Acne: Rarely
  • Water Retention: High
  • HBR: Perhaps
  • Aromatization: Low
  • Hepatoxity: Low
  • Alternative names:  deca, nandrolone d, dnan, deca durabolin

Deca Durabolin is a popular anabolic steroid made from the steroidal hormone Nandrolone and is attached to the large Decanoate ester. Organon developed the Nandrolone hormone in 1960 and sold it as Deca Durabolin in 1962. Deca Durabolin is the most well-known version of Nandrolone Decanoate. This was not the first Nandrolone compound ever made. Organon's Durabolin is specifically Nandrolone Phenylpropionate. The Phenylpropionate version works faster but doesn't last as long. Deca Durabolin is the most popular form of Nandrolone.

Deca Durabolin is one of the most common steroids used by athletes who want to improve their performance. It's known for being incredibly helpful during the off-season for building muscle, but many athletes also like it for its healing properties. The Nandrolone hormone is one of the best anabolic steroids in medicine because it helps a lot. But due to years of anabolic steroid controversy, such use has been quite limited in the U.S. for many years. Deca Durabolin remains more popular in therapeutic treatment plans that can cover a host of areas.


Deca is officially classified as an anabolic androgenic steroid. The 19-nor classification means that the testosterone hormone does not have a carbon atom at the 19th position. This small change in structure makes us a unique anabolic steroid. Deca Durabolin is attached to a large Decanoate ester, which slows down the hormones release. This lets the person use Nandrolone hormone without having to inject it many times. Once you inject the Decanoate ester, there will be a sharp spike in Nandrolone released within the body. From this point, the hormone will continue to be released into the body for about 2-3 weeks.

Deca has a strong anabolic effect that is slightly stronger than testosterone. But it doesn't have as much androgenic power as testosterone. It only has a rating of 37, while testosterone has a rating of 100. Deca Durabolin lessens androgenic activity by reducing to dihydronandrolone (DHN) instead of dihydrotestosterone (DHT) Deca Durabolin is a much milder steroid than testosterone and is one of the best anabolic steroids for healthy adult men. This tolerance is also shown by its low estrogenic activity. Deca Durabolin smells, but it smells about 20% less than testosterone. But it does have a strong progestin nature, and this will play into its side effects.

Deca can increase protein synthesis, inhibit glucocorticoids, and increase IGF-1 production. Deca Durabolin also has the ability to increase nitrogen retention in the muscles. Studies have shown that even low doses of Nandrolone can greatly improve nitrogen retention. This is important because muscle tissue is made up of approximately 16% nitrogen. The more we retain, the more anabolic we are. If we don't get enough nitrogen, our muscles can become weak and stop working.

Deca is also known for two things that are very important and make it different from many other anabolic steroids. Deca Durabolin does these things better than many other steroids. The traits in question are increasing bone mineral content and collagen production. Deca Durabolin is known for helping joint pain, and many athletes use it for that reason alone. This steroid can help with healing because it can increase the number of red blood cells.

Deca Durabolin is a good steroid for people who have muscle wasting diseases, elderly people who feel weak and tired, and people who are anemic. Deca Durabolin can be used to treat breast cancer, help people who have suffered severe burns, and even heal ulcers. It has been proven to help children with dwarfism and development delays. Deca Durabolin has been helpful in all of these areas, but its real strength is in its ability to treat osteoporosis. This isn’t surprising considering the improvements in bone mineral content and collagen synthesis. Some doctors are beginning to see the potential for therapeutic rejuvenation plans. A low dose of this steroid could provide a positive anti-aging benefit.


While Deca Durabolin's therapeutic benefits are easy to see, most people are worried about its use off-label. Deca Durabolin is a favorite among athletes who want to improve their performance. It is often misunderstood. The idea is that this is only a bulking steroid, and while that is a great point of use, it's not the only one. Some bodybuilders who compete use Deca Durabolin during their cutting phase. During this time, they don't gain weight. To understand Deca Durabolin and its different benefits, you need to change the way many people think about anabolic steroids. This type of thinking thinks that all steroid progress is based on building lean muscle tissue. Anabolic steroids are used for many reasons, but this is not the only one. Deca Durabolin has a number of positive effects.

Deca Durabolin will help you gain lean mass, but the increase in muscle mass will come slowly. This drug has a lot of alcohol in it, so it won't work quickly. But if you use this steroid, you will gain more muscle than other anabolic steroids. Water retention can happen, but it should be easy to get rid of. Deca Durabolin is not what we’d call one of the stronger strength increasing steroids. During the off-season, the person will feel better because of the medicine. This is helpful because during the off-season, people usually do a lot of weight training. This person should also be able to get this new growth without gaining weight. Anabolic steroids are known for increasing metabolic rate. Deca Durabolin can help you keep your body fat at a good level, but it's not the only thing it can do. To gain weight during the off-season, you need to eat more calories. This can help your body burn more calories.

Many athletes, ball players, fighters, and anyone who could benefit from therapeutic relief often supplement with Deca Durabolin. The relief alone is worth it. You can also get relief by taking a very low dose. A slightly higher dose will provide relief, greatly improve overall recovery, and increase muscular endurance. This steroid is hard to beat when it comes to performance enhancement. Most importantly, Deca Durabolin does not cause pain like other painkillers like opiates. These painkillers only make the pain worse, but Deca Durabolin can actually make the body better.

Then we’re left with the cutting phase, and some athletes and bodybuilders will use Deca Durabolin. This use will be like direct athletic enhancement. The individual will supplement with a low dose for the relief and muscle endurance it can give. This is good for people who do hard diets because they can hurt their bodies a lot. Deca Durabolin will also help keep the individual’s lean muscle mass, which would otherwise be lost during a caloric deficit. This steroid won't make you hard or strong like other steroids, but it can help with some cutting plans.

Side Effects

Deca Durabolin is one of the more side effect friendly anabolic steroids for men and can be helpful for women, but only in therapeutic level doses. But side effects of Deca Durabolin do exist, but as we'll see, they mostly fall into the realm of possible rather than guaranteed. Most men can use this steroid without having any problems. To use Deca Durabolin safely, you need to understand the possible side effects and what you can do about them. We've broken down the side effects into separate categories with the information you need.

Estrogenic sides:

Nandrolone hormone is not very estrogenic, but it does smell. Aromatization is when testosterone turns into estrogen by interacting with an enzyme called aromatase. As estrogen levels go up, this can cause gynecomastia, excess water retention, and high blood pressure. Deca Durabolin is low in aromatase, but it is also a progestin. Nandrolone has a strong affinity for the progesterone receptor and the ability to stimulate the estrogenic mechanism in the mammary tissue, which increases the risk of gynecomastia.

An anti-estrogen medication is often recommended to protect against the possible estrogenic and progesterone related side effects of Deca Durabolin. There are two main types of anti-estrogens: Selective Estrogen Receptor Modulators (SERM's) like Nolvadex (Tamoxifen Citrate) and Aromatase Inhibitors (AI's) like Arimidex. AI will be better, but SERM should be the first option if they can do the job. Many people use AIs because they have a lot of anti-estrogenic power, but AIs have been shown to have a negative effect on cholesterol, which can be made worse by using anabolic steroids. SERMs are sometimes not enough, but they won't hurt cholesterol. Actually, SERMs can make cholesterol levels better.

An important note on the side effects of Deca Durabolin as it pertains to gynecomastia. It has been thought for a long time that prolactin is the cause of 19-nor-induced gynecomastia. Many arguments have been made about Trenbolone and Nandrolone. William Llewellyn explains how a lack of estrogen and progesterone can cause gynecomastia. If you don't address this problem, you may not be providing the protection you need.

Androgenic Sides

Deca Durabolin can cause androgenic side effects, but the threshold is usually too high for most men. Possible androgenic side effects of Deca Durabolin include acne, hair loss, and body hair growth. Most men should find no problems with these side effects. Nandrolone is reduced to DHN instead of DHT, and this happens because it interacts with the 5-alpha reductase enzyme. This reduces the androgenicity of Nandrolone.

Many people choose to use 5-alpha reductase inhibitors like Finasteride to fight the androgenic side effects of Deca Durabolin or any Nandrolone hormone. Using a drug called 5-alpha reductase inhibitor with Deca Durabolin will make the steroid more androgenic. It will actually make androgenic side effects more likely.

Deca Durabolin can make women feel more sexually active. Virilization can cause body hair to grow, vocal chords to deepen, and clitoral swelling. Women can use this steroid without getting virilized, but they need to take very small amounts. There are better steroids for women to choose from. If you want Nandrolone, Phenylpropionate may be the way to go. It’s easier to control and less likely to cause virilization symptoms than steroids like Anavar or Primobolan. Whatever happens, stop using the medicine right away and the symptoms will go away. If you ignore symptoms, they may become permanent.

Cardiovascular sides

Deca Durabolin can make cholesterol worse by changing the ratio of good cholesterol and bad cholesterol. This potential negative effect will be most noticeable when it comes to HDL cholesterol suppression. Studies have shown that the hormone Nandrolone affects HDL cholesterol more negatively than testosterone. But taking oral steroids should not put too much stress on the heart.

Because Deca Durabolin may cause cholesterol issues, it is important to keep a cholesterol friendly lifestyle while Deca Durabolin is being used. You should eat a healthy diet with lots of omega fatty acids and cardiovascular exercise. Remember that if you take Deca Durabolin with an Aromatase Inhibitor, you need to pay more attention to your cholesterol. You should pay attention to your cholesterol while taking Deca Durabolin and afterward.

Sides related to testosterone

Deca Durabolin is an anabolic steroid that blocks natural testosterone production. Different steroids work differently, but Deca Durabolin and all Nandrolone-based substances work very strongly. Some studies show that a single 100mg dose of the steroid will suppress total natural production. Other studies show at least 2/3rds total reduction in serum testosterone levels. For this reason, all men who take Deca Durabolin should also take exogenous testosterone. The type of testosterone you use doesn't matter. All that matters is that your body gets the testosterone it needs. If you don't supplement with exogenous testosterone, you will have a low testosterone condition. A condition like this can be very bothersome. It comes with a lot of possible symptoms, but it's also very unhealthy.

Once Deca Durabolin has been taken out of your system, natural testosterone production will start again. Post Cycle Therapy is often recommended because it won't happen overnight. This will speed up the recovery process and make it more efficient overall. No, contrary to popular belief, there is no PCT plan that can make your natural testosterone levels normal by itself. It will take several months to recover fully. But a PCT plan will make sure you have enough testosterone to work properly while your levels continue to rise naturally.

Natural testosterone recovery after Deca Durabolin use assumes that there was no previous low testosterone condition. This assumes that no serious harm was done to the Hypothalamic-Pituitary-Testicular-Axis (HPTA) by doing things wrong. It's important to remember that you shouldn't start a PCT plan until Deca Durabolin has been stopped for at least 2-3 weeks. Many people think it's best to stop using Deca Durabolin before the end of their cycle.


Deca Durabolin is a medicine that works slowly and doesn't need to be given often. In most therapeutic treatment plans, the compound is only given once every 2-4 weeks. Every 3-4 weeks is much more common. The only exception is when treating anemia, Deca Durabolin is usually given once a week. A single injection per week will be more than enough for any performance related pursuit. Some people will choose to split this up into two small injections per week to cut down on the total injection volume.

The standard dosage range for Deca Durabolin is usually 100mg every 2-4 weeks for basic therapeutic treatment and 100-200mg per week for the treatment of anemia. Most athletes will be happier with 200mg per week results. This will ensure that recovery, relief, and endurance are all improved as well as give a slight anabolic boost. 300mg per week is usually considered the low-end dose for anabolic gains. Many will find 400mg per week to be the perfect dosing level, and more importantly, a level they can control. Many men can take 600 mg per week. This will make it more likely to cause problems. 400mg per week is usually enough, but each person's situation will determine what happens.

Deca Durabolin should not be used for less than 8 weeks. The compound takes a long time to work, so the person will need to use it for a long time. You should stop taking it after eight weeks, but it will still be in your body for several weeks. We recommend 8 weeks, but most men will be happy with 10-12 weeks. Most people don't cycle for more than 12-16 weeks outside of hardcore performance circles, and in those cases, a rotation of steroidal hormones is highly recommended.

For female athletes, they can take 50mg per week for 4-6 weeks. Some people may be able to take 100mg per week, but this dose will usually cause virilization symptoms in most women. Deca Durabolin will usually be given at 50-100mg every 3-4 weeks. To treat anemia, you should take 50-100mg of iron every week.

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Tags: deca, nandrolone d, dnan, decanoate, 200mg, sixpex, anabolics, 10ml, durabolin, deka