• Testosterone Undecanoate
  • 250mg / ml
  • 10ml vial
SKU: 36365 Category: Tag:

Testosterone Undecanoate is an extremely large/long ester base testosterone compound that is primarily used in the treatment of low testosterone. Comprised of Testosterone Undecanoate, this is the same hormone and ester used in the anabolic steroid Andriol, an oral testosterone capsule. However, Testosterone Undecanoate is an injectable testosterone hormone and carries a much longer activity time post administration.

Testosterone Undecanoate is a relatively new anabolic steroid that was first brought to the market in 2004 by Schering AG. It has been approved for the treatment of androgen deficiencies in most countries around the world. However, in the U.S. the pharmaceutical company Indevus owns the rights to the Testosterone Undecanoate line, and it has yet to reach full FDA approval in the U.S. That could very well change in the near future, and there’s no logical reason for it not to; however, Testosterone Undecanoate has had a difficult time gaining U.S. FDA approval for reasons that are somewhat unknown.

Although primarily viewed as a testosterone compound for the treatment of low testosterone, Testosterone Undecanoate can be used for performance enhancing purposes. However, it is not all that common among athletes and gym rats due to its very slow acting nature. Results could easily be obtained with this compound similar to the more popular testosterones in Testosterone Cypionate and Testosterone Enanthate. However, due to the very slow activity, Testosterone Undecanoate wont be well-suited for most performance based plans.

Testosterone Undecanoate Functions & Traits:

Testosterone Undecanoate is a pure testosterone hormone attached to the very large Undecanoate ester (Testosterone Undecanoate). The ester is attached to the hormone in order to regulate its release pattern, but it does not affect the testosterone hormones mode of action in anyway. The functions and traits of Testosterone Undecanoate on a hormonal basis will be the same as all testosterone compounds.

Testosterone Undecanoate, as a testosterone hormone, like all testosterone hormones carries an anabolic rating of 100 as well as an androgenic rating of 100. This is an estrogenic anabolic steroid in that it does aromatize at a fairly significant rate. As a testosterone compound, Testosterone Undecanoate will also carry one of the longest half-lives of any testosterone or anabolic steroid available. Testosterone Undecanoate carries an active half-life of approximately three months. Compare this to the more popular Testosterone Cypionate and Testosterone Enanthate, which both carry half-lives a little greater than a week and you can begin to understand how slowly acting Testosterone Undecanoate will be.

In order to understand Testosterone Undecanoate, the first step is to understand testosterone. Testosterone is a naturally produced hormone and is essential to the health and well being of both men and women. However, men require approximately ten times the amount of women, and it is considered the primary male androgen. Testosterone is responsible for numerous actions throughout the body, including the development of sexual characteristics, to the building and maintenance of muscle mass as well as its preservation. Not only does testosterone affect our physical well being, it also plays roles on our sexual and mental health.

Those who suffer from low testosterone will find there are numerous possible symptoms associated with the condition. The symptoms are brought on by the simple fact that there is no longer enough testosterone being produced by the body to meet its needs. As Testosterone Undecanoate is simply testosterone, while it is a synthetic version it is identical to the naturally produced hormone. This makes Testosterone Undecanoate perfect for the treatment of low levels of the primary androgen in men. When we consider how infrequently Testosterone Undecanoate has to be administered, this will give it even more appeal to many patients. More on this when we discuss the compounds administration protocol.

Testosterone Undecanoate also carries functions and traits that can be well-suited for the purpose of performance enhancement. However, because of its very slow acting nature it will only be used in performance based plans that last sixteen weeks or more. This will be a longer time frame than most anabolic steroid cycles, and therefore a poor choice for most performance athletes. However, as a performance based steroid you will find Testosterone Undecanoate to be highly versatile, and it can be used in all cycles for all purposes of supplementation. It will provide some of the most basic steroidal traits known to man, but due to testosterone being so well-tolerated by most adult men this makes it tremendously beneficial. The use of Testosterone Undecanoate will provide the following traits largely associated with performance enhancement:

  • Enhanced Nitrogen Retention
  • Enhanced Protein Synthesis
  • Increased IGF-1 Production
  • Increased Red Blood Cell Count
  • Decreased Levels of Glucocorticoids

For more information on the primary performance traits listed above, please see any of the primary testosterone profiles in Testosterone Cypionate, Testosterone Enanthate, Testosterone Propionate, Testosterone Suspension, Sustanon 250 and Omnadren. As Testosterone Undecanoate is primarily used only for the treatment of low testosterone, there is no need to go into deep detail on the hormone in a performance capacity. However, such information can be found at the aforementioned profiles.

Effects of Testosterone Undecanoate:

The effects of Testosterone Undecanoate can largely be summed up in a very simple way. You no longer produce enough testosterone, and as a result, you now suffer from low testosterone. By supplementing with Testosterone Undecanoate, you now have the testosterone your body needs and all the related low level symptoms go away. While this may seem hard for some to understand, keep in mind Testosterone Undecanoate is simply testosterone, the very hormone your body needs. It may be a synthetic model, but once in the body the body will make no distinguishing difference in it and the naturally produced testosterone hormone.

Due to the effects of Testosterone Undecanoate, or more aptly the effects of exogenous testosterone, those who suffer from low testosterone will see their symptoms vanish shortly after use begins. There are numerous possible low testosterone symptoms. Most men will only display one or two at the early stages of the condition, but as time goes by the symptoms will normally mount up and progressively become stronger. The primary symptoms of low testosterone, all of which can be remedied by the effects of Testosterone Undecanoate include:

  • Erectile Dysfunction (inability to maintain or obtain an erection)
  • Loss of Libido (can refer to partial or total loss)
  • Loss of Muscle Mass (despite diet & exercise)
  • Loss of Strength (despite diet & exercise)
  • Increased Body Fat (despite diet & exercise)
  • Inability to Lose Body Fat (despite diet & exercise)
  • Declining Memory
  • Declining Mental Focus
  • Declining Mental Clarity
  • Lethargy
  • Irritability
  • Weakened Immune System
  • High Cholesterol
  • Loss of Hair
  • Depression
  • Decreased Energy
  • Insomnia

The symptoms of low testosterone can be very bothersome and greatly diminish your overall quality of life. The symptoms are not life threatening, not directly, but if ignored a prolonged low testosterone condition can aid in the promotion of far more serious conditions. Low testosterone has been linked to Alzheimers disease, diabetes, heart disease, osteoporosis and numerous other serious conditions. With exogenous testosterone so readily available and with the effects of Testosterone Undecanoate and other related compounds being so effective, there is no logical reason for suffering from a low testosterone condition.

Side Effects of Nebido:

There are possible side effects of Testosterone Undecanoate, but most healthy adult men should be able to supplement with this anabolic steroid problem free. Remember, testosterone is not a foreign substance to the body; you are not introducing something to your body it is unfamiliar with. Further, you will merely be replacing what your body is lacking and nothing more. However, most men can tolerate high levels of testosterone fairly well or what is referred to as supraphysiological doses. There is a cutoff point, and supraphysiological doses of testosterone will increase the risks associated with use, but the threshold is high. As for the side effects of Testosterone Undecanoate, while possible, the threshold is even higher since we are supplementing with therapeutic level doses. In order to help you understand the possible side effects of Testosterone Undecanoate, we have broken them down into their separate categories along with all the information you’ll need.

[1] Estrogenic:

The side effects of Testosterone Undecanoate can include those of an estrogenic nature. This is due to the testosterone hormones interaction with the aromatase enzyme, which causes a conversion of testosterone to estrogen. As estrogen levels rise, this can promote excess water retention and gynecomastia. As a secondary effect, it can also promote high blood pressure if water retention becomes severe.

Due to the estrogenic side effects of Testosterone Undecanoate, some men will need an anti-estrogen. With therapeutic level doses of testosterone, many men will be able to get by without an anti-estrogen, but just as many men will need one. You have two choices in anti-estrogen categories, Aromatase Inhibitors (AIs) and Selective Estrogen Receptor Modulators (SERMs). AIs will be the most effective. AIs function by inhibiting the aromatase process, thereby lowering serum estrogen levels. SERMs function by binding to the estrogen receptors, thereby preventing the estrogen hormone from binding. AIs can be a little harsh on cholesterol, SERMs cannot, but some men will need an AI. If an AI is needed, bearing no underlying issues, cholesterol can be controlled.

[2] Androgenic:

The side effects of Testosterone Undecanoate can include those of an androgenic nature. The androgenic side effects of Testosterone Undecanoate are, however, highly dependent on genetic predispositions and will not affect all men. The possible androgenic side effects of Testosterone Undecanoate include accelerated hair loss in those predisposed to male pattern baldness, acne in sensitive individuals and body hair growth.

While by no means always necessary, some men may find the use of a 5-alpha reductase inhibitor to be useful. The testosterone hormone is metabolized by the 5-alpha reductase enzyme, which reduces the testosterone hormone to dihydrotestosterone (DHT). The DHT is what leads to the androgenic related effects. By incorporating a 5-alpha reductase inhibitor, you will reduce the hormones androgenicity. It will not be a complete reduction, but it will be significant. However, such inhibitors are not always recommended and should only be used as needed as they can hinder the potency of the testosterone hormone.

[3] Cardiovascular:

The side effects of Testosterone Undecanoate can include high blood pressure, but this normally not an issue if water retention is controlled and no underlying health issues exist. However, the side effects of Testosterone Undecanoate can also include a negative effect on lipids regardless of estrogen control. Alone, exogenous testosterone does not appear to have a strong statistical impact on cholesterol. Therapeutic level doses of Testosterone Undecanoate should only result in minimal HDL cholesterol suppression. However, when conjoined with an AI, therapeutic doses have been shown to suppress HDL cholesterol by as much as 25%. If your cholesterol health is already borderline this could be a problem. However, if you have healthy cholesterol and consume a diet and live a life that promotes its continuation you should be fine.

[4] Testosterone:

The side effects of Testosterone Undecanoate will include natural testosterone suppression in all men who supplement with the anabolic steroid. However, for the low testosterone patient, this is of no concern as he is no longer producing enough testosterone to begin with.

[5] Hepatotoxicity:

Testosterone Undecanoate is not a hepatotoxic anabolic steroid and will not damage or stress the liver.

Testosterone Undecanoate Administration:

For the purpose of treating low testosterone, the primary purpose of use, standard Testosterone Undecanoate doses will normally be 1,000mg every 12 weeks. Most plans will call for a second 1,000mg dose to be applied 6 weeks after the first injection, and from there the standard 12 week protocol will follow. That is it, that’s all there is too it. Because it is such a slow and long lasting testosterone, you could actually get by and get by well with only a handful of injections per year and see your low testosterone condition vanish.

In a performance setting, most will need approximately 1,000mg every 2-4 weeks to see desired results. However, Testosterone Undecanoate truly isn’t a compound well-suited for most performance plans and there are better options available.

Availability of Testosterone Undecanoate:

Testosterone Undecanoate is available in many European pharmaceutical markets and a few other places around the world. However, black market Testosterone Undecanoate or underground lab versions are somewhat rare and hard to find. If you happen to find black market Testosterone Undecanoate, you will normally find it is fairly expensive. The demand for this steroid simply isn’t high on the black market due to older versions of testosterone being so readily available and more apt for performance based cycles. Further, keep in mind you will not find Testosterone Undecanoate on the U.S. pharmaceutical market.

Testosterone Undecanoate Reviews:

For the purpose of treating low testosterone, Testosterone Undecanoate is one of the best options you will ever have. As an injectable testosterone, it will be far more effective than trans dermal patches and creams, as well as most oral testosterone preparations. Due to the very large Undecanoate ester, it will also be very convenient due to the extremely infrequent injection schedule. Beyond these factors,Testosterone Undecanoate will work just as well, no better or worse than any other injectable testosterone commonly used to treat low testosterone. Its advantage truly is in the long active therapeutic window.

Testosterone Undecanoate Profile

  • Testosterone + Undecanoate ester
  • Formula: C19 H28 O2
  • Molecular Weight (base): 288.429
  • Molecular Weight (ester): 186.2936
  • Manufacturer: Schering AG
  • Effective Dose (Men): 1,000mg every 4wks
  • Effective Dose (Women): Not recommended
  • Half-Life: Approx. 3 months
  • Detection Time: Approx. 6 months
  • Anabolic /Androgenic Ratio: 100:100
Weight 0.100 kg
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