Trenbolone is an androgenic steroid of the 19-nor family (nandrolone, trenbolone), class 1 (strong binding to the androgen receptor, AR).

Trenbolone is a veterinary steroid, which started to be marketed in the 1980s, and soon became popular in bodybuilding for its high anabolic and androgenic power (anabolism / androgenicity: 500/500), being considered the most powerful drug among steroids, no only for gains in muscle mass, but also for the high lipolytic power (fat burning) and strength gains. One of the reasons why trenbolone is such a powerful drug is its strong binding to the androgen receptor (AR), stronger than testosterone itself, its ability to raise IGF-1 levels and increase the sensitivity of satellite cells (cells that repair muscle damage) ) to IGF-1, and also because it is a powerful cortisol antagonist.

Even though it does not convert to estrogen and DHT, trenbolone is still considered one of the most aggressive steroids in side effects. It is considered one of the drugs that most increase aggressiveness (alongside Halotestin), and also the drugs that most suppress the HPT axis (hypothalamus-pituitary-testicular). I strongly recommend using HCG after a cycle with Trenbolone. Due to its high androgenic power, side effects such as acne, greasiness, hair loss, virilization and masculinization in women, its risk is increased with this drug. Trenbolone also appears to cause gynecomastia in some users (+2 on the Haluch scale), even though it does not undergo aromatization, probably because it is a progestin and binds to the progesterone receptor, which may elevate prolactin, although many users have normal prolactin levels, and levels elevated levels of this hormone were not found in animal experiments (sheep). High blood pressure is also very common with this drug, probably due to the increased production of red cells (erythropoiesis). Trenbolone is not toxic to the kidneys and liver, but it does have some negative effect on the lipid profile. Many users also suffer from insomnia and night sweats.

A particular side effect of trenbolone reported by some users is "train cough". It can be very unpleasant lasting between one to two minutes. The most likely explanation is the irritating effect of a small amount of preparation of the oil entering the bloodstream, not by direct injection into a vein but by leaking into a small blood vessel that was cut when the needle was inserted.

Because of its high nitrogen and glycogen retention power in muscle, and its high lipolytic and anti-catabolic power, trenbolone is considered by many bodybuilders to be the best steroid during preparation for competition. Trenbolone also decreases fluid retention and gives a strong dry and dense appearance to the muscle. Many contestant bodybuilders like to use Trenbolone with testosterone and masteron or stanozole. As a class 1 steroid, trenbolone also appears to have a powerful synergistic effect with stanozolol, hemogenin and dianabol, which are class 2 steroids, which have their effects not mediated by AR. Bodybuilders can combine it with masteron, primobolan, oxandrolone or stanozol, in addition to testosterone as the basis of the cycle. Athletes looking to gain strength can build a powerful combo combining trenbolone with hemogenin, dianabol or halotestin, in addition to testosterone. Today I consider trenbolone as a steroid as important as testosterone, and an athlete of intelligent strength (powerlifters, bodybuilders), who has no restrictions on its side effects (especially regarding the emotional part), will always consider the use of this drug in a preparation for competition.

Unfortunately, trenbolone appears to reduce T3 production, although this has not been proven in humans. Although trenbolone is a great drug for definition, it is a counterproductive side. This does not mean that you need to add T3 to the cycle, because you would need to assess your TSH and free T4 levels with tests to see if Trenbolone really affected thyroid hormone levels, even because these hormones tend to normalize quickly under normal conditions. .

Trenbolone can be found in acetate, enanthate and Hexahydrobenzyl Carbonate (Parabolan) versions. Acetate is the favorite ester among athletes for having a high concentration of trenbolone in the ester (83mg of trenbolone for every 100mg of acetate) and also for its fast action, having a half-life of approximately 1-2 days. Enanthate has a concentration of 68mg of trenbolone for every 100mg of enanthate ester and a half-life of ~ 5-6 days. Parabolan was a commercial version of trenbolone popular with bodybuilders in the 80s and 90s, with a half-life of ~ 3-4 days and 65mg of trenbolone for every 100mg of Hexahydrobenzyl Carbonate ester. The most common doses of trenbolone among beginners is 300 to 500mg per week, and advanced users often report doses of 700 to 1500mg per week.

Women in general avoid this drug due to its high risk of virilization, but the use of trenbolone is common among athletes from categories with a more defined physique and with more developed musculature, as in the Women’s Physique and Bodybuilding categories. The usual doses with less risk of virilization are around 150mg per week, but this can vary greatly from the individual response of each athlete.

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