Nebido contains a substance that is an ester derived from natural testosterone. Testosterone undecanoate is converted to testosterone after cleavage of the molecule’s side chain.
Endogenous testosterone is an important androgen in the body produced by the adrenal cortex and testes (and the synthesis of the substance in the testes is much higher than in the adrenal cortex).
The development of sexual characteristics in men is regulated by testosterone during fetal development in early childhood and adolescence. In adults, testosterone helps maintain the male phenotype and regulates androgen-dependent processes (including spermatogenesis).
Testosterone affects not only the reproductive system, but also the kidneys, liver, bones and muscles, skin, bone marrow and nervous system.

The condition associated with low serum testosterone levels in men is called hypogonadism and may be accompanied by decreased libido, erectile dysfunction, depression, fatigue, reflux and immaturity of secondary sexual characteristics. Hypogonadism increases the risk of osteoporosis in men. In such cases, testosterone intake helps to normalize the levels of this hormone and reduces the severity of the symptoms of hypogonadism.
Testosterone has a number of main effects depending on the target organ:
- androgenic action (target organs: testicular appendage, prostate, sperm).
- protein anabolism (target organs: liver, hematopoietic system, kidneys, bones and muscles).
Testosterone Undecanoate – Benefits
Despite the side effects of using Testosterone Undecanoate in cycles, the benefits of this substance are enough to entice many bodybuilders to give it a try. One of the biggest benefits of using testosterone undecanoate is that it does not interact with aromatase enzymes, meaning no estrogenic side effects. This makes it a popular choice for people trying to reduce water weight during a cutting cycle.
Testosterone Undecanoate also has several other bodybuilding benefits, including:
INCREASED STRENGTH AND POWER: Testosterone Undecanoate is a fast-acting ester and has been known to give athletes an immediate increase in strength and power without significant gains in mass.
Muscle Gains: This steroid promotes rapid muscle growth that will be very noticeable within the first few weeks of use. You can expect to gain 10-15 pounds or more when using it.

Better Lipolysis: Testosterone Undecanoate can help you burn fat faster, especially around the abdomen. You’ll gain more muscle while losing body fat, making this steroid perfect for gaining mass before a competition or photo shoot.
Increased Endurance and Endurance: This supplement will improve your ability to train in the gym, which will help you maintain a high level of intensity for a longer period of time. As a result, your endurance level will increase.
Shortened Recovery Time: This steroid is fast acting and can take effect in as little as 6-7 days. You’ll be able to train harder and recover faster by using Testosterone Undecanoate.
Improving Cardiovascular Health: In addition to reducing fat, testosterone undecanoate can also significantly improve cardiovascular health. It will reduce the risk of harmful cholesterol build-up in the arteries while increasing lean muscle tissue, which can lower blood pressure and reduce the burden on the heart muscle.
Testosterone Undecanoate – Results
For the treatment of low testosterone, the main purpose, the standard dose of Testosterone Undecanoate is usually 1000 mg every 12 weeks. Most planning will require a different 1000 mg dose 6 weeks after the first injection, followed by the standard 12-week protocol. That’s it, that’s it. Since it’s such a slow and long-lasting testosterone, you can get on and get along well with just a few injections a year and see your low testosterone levels fade away.
In a sports environment, most people will need around 1000 mg every 2-4 weeks to see the desired results. But Testosterone Undecanoate is certainly not a suitable association for most performance plans, and there are better options.
Testosterone Undecanoate is an extremely large / long ester based testosterone compound that is mainly used to treat low testosterone levels. Made up of testosterone undecanoate, this is the same hormone and ester that is used in the Andriol anabolic steroid, the oral testosterone capsule. However, Testosterone Undecanoate is an injectable testosterone hormone and has a much longer duration of action after administration.