Testosterone Undecanoate

Testosterone Undecanoate

One of the grand large ester based testosterone compounds used to increase testosterone levels is Testosterone Undecanoate. It is very similar to the chemistry and ester found in Andriol, an oral anabolic steroid. Testosterone Undecanoate is an injectable steroid and the activity it offers is much longer in terms of time and keeping the level of regulated.

Testosterone Undecanoate is one of the newer anabolic steroids on the market. It was introduced in 2004. When you consider others are dated back to the 1960s, it doesn’t have as long of a history. However, it has been getting rave reviews around the world for the treatment of androgen deficits. The company in the USA which owns the rights to it hasn’t gotten FDA approval yet. It is in process, but it has proved to be a challenge. The reasons for the delay haven’t been shared.

Testosterone Undecanoate is mainly used for the treatment of low testosterone in the world of medicine. However, it is also used widely among athletes due to the way in which it can enhance overall performance. This compound is slower acting than many of the other choices they have.

Some athletes go with Testosterone Cypionate or Testosterone Enanthate as they show the results faster. The value of Testosterone Undecanoate though is it works slowly and that means it fits most cycles and performance plans.


Testosterone Undecanoate is a pure testosterone hormone, and it attaches to a large ester. The ester then attaches to the hormone and this is what allows the time release to occur. All testosterone compounds are the same, and the body doesn’t know the difference between synthetic and naturally produced. All testosterone carries an anabolic and androgenic rating of 100.

Testosterone Undecanoate aromatizes at a fast speed. It has a half-life of around three months, the longest of all testosterone compounds. Some of the other products that can be used only have a half-life of a few days.


The body naturally produces testosterone, about 10 times more for men than women. While it is the primary sex hormone in men, it takes care of a wide range of mental and physical functions. When a man is low on it, there can be a variety of symptoms that reduce his overall quality of life. The good news is the use of Testosterone Undecanoate can help to boost that level quickly. This means the symptoms are going to be reduced or eliminated.

When it comes to performance enhancement, Testosterone Undecanoate is a winner too. The fact that is works slowly though means a user isn’t going to see huge changes in their muscle mass with it. However, many athletes like to get results without bulking up. They also don’t want to everyone to know they are using any type of steroids. The overall performance plan shouldn’t last for more than 16 weeks.

Testosterone Undecanoate is quite versatile, so it can be incorporated into just about any type of performance plan a person would like to be involved with. Some of the benefits associated with the use of it for men include:

Enhanced nitrogen retention

Enhanced protein synthesis

Increased IGF-1

Increased red blood cells

Reduced Glucocorticoids

Effects of Testosterone Undecanoate

When the body is no longer producing enough testosterone, the use of Testosterone Undecanoate can be used to help increase it. This will cause the symptoms to be reduced or eliminated. It can take time for the right dose and frequency of the compound to be injected to keep the levels regulated. There are several symptoms of low testosterone that shouldn’t be ignored. They include:




Hair loss

High cholesterol


Increased body fat


Loss of libido

Loss of muscle mass

Loss of strength

Memory loss

Unable to focus

Weak immune system

Reduced quality of life is often the result of low testosterone. Too many men out there ignore it or they try to hide it because they are embarrassed. They need to speak up because the use of Testosterone Undecanoate can help them get their life back on track and to be happier again. There are more than 20 million men in the USA that struggle with low testosterone so there is no reason for it to be such a taboo subject.

Possible Side Effects

Most men who are in good health have no issues when they use Testosterone Undecanoate at a reasonable dose. However, there are some possible side effects that should be addressed. Being well informed can help you to decide if this testosterone compound is right for you. Since the body is already naturally supposed to produced testosterone, when you have a low amount, it will accept it rather than reject it.

Most side effects develop when a man has a genetic issue or a sensitivity. For performance enhancement, the dose can be too high and that will also increase the risk of side effects. There is a cutoff point of what is tolerated, and that level will vary for each person.


It is possible for the use of Testosterone Undecanoate to cause androgenic side effects. This is often the result of genetic issues someone already has such as male pattern baldness or a sensitivity Such side effects can include:


Hair loss

Unwanted body hair

The use of a 5-alpha reductase inhibitor can be a great way to reduce the risk of such side effects from Testosterone Undecanoate. This will reduce the testosterone from reducing the DHT so that it blocks the androgenic side effects.


If you have issues with your cholesterol or your high blood pressure, you shouldn’t use Testosterone Undecanoate. It can make such concerns worse than they really are. It is a good idea to test both your cholesterol and your blood pressure before and during the use of Testosterone Undecanoate. It can cause your balance of good and bad cholesterol to be upside down.

You can help to offset this by eating a diet that is high in omega fatty acid and low in saturated fats. Keep the sugar out of your diet and make sure you get plenty of cardio exercise each week. You should make your overall health a priority when you use any type of compounds including this one.


There may be some estrogenic side effects from the use of Testosterone Undecanoate. This happens because the testosterone will be able to aromatase fast. This creates the change from testosterone to estrogen. When there is too much estrogen, it can create side effects including:


High blood pressure

Water retention

Taking an anti-estrogen compound is a good way to fight such estrogenic side effects from the use of Testosterone Undecanoate. The use of SERMs or AIs is also a good idea. While both of them can be effective, it appears the use of AI is going to offer the most value overall.


There is no danger to your liver from the use of Testosterone Undecanoate.


Any type of testosterone is going to suppress what your body natural produces. If you are using Testosterone Undecanoate for low testosterone, you will see gains and improvements with this compound. If you are using Testosterone Undecanoate for performance enhancement, you should have a post cycle therapy plan in place. This will help get your natural production back up to speed once all of the compound is out of your body.

Testosterone Undecanoate Use

The dose of Testosterone Undecanoate is up to 1,000 mg every 12 weeks for low testosterone. For performance enhancement, that may be up to 1,000 mg every 6 weeks. The higher the dose, the higher the risk of side effects. The dose can also vary depending on what else it is stacked with.

Buying Testosterone Undecanoate

You can purchase Testosterone Undecanoate from many of the European pharmacies as well as on the black market. There is a demand for it, but you won’t have to pay too much for it or struggle to find it. You do need to carefully select who you will buy from and compare prices. You need a pure product, not one that is counterfeit or has the risk of bacteria with it.

You also need to learn the laws about the use and possession of Testosterone Undecanoate. In some countries, it is illegal to have this Schedule III controlled substance. You don’t want to face any legal concerns because you broke the law.

Review of Testosterone Undecanoate

Testosterone Undecanoate is one of the great choices for controlling low testosterone. The injection doesn’t need to be done as often as other products and it is an affordable compound. The large ester allows it to be time released and that helps to regulate the level of testosterone for the long term. For performance, Testosterone Undecanoate is a decent choice but due to the long half-life, it can be hard to hide the use of it for various competitions where drug testing will take place. There are better choices for performance enhancement to consider.