Trenbolone is steroid purposely developed for veterinary use. This compound is used on livestock to promote muscle growth and increase appetite. To address the problem with its very short life, it has been refined by adding esters to the compound. Trenbolone is commonly administered through three esters – acetate, enanthate and cyclohexylmethylcarbonate. Popular brand names of trenbolone acetate are Finaplix Gold and TREMBLONA QV75. Parabolan is a brand of trenbolone cyclohexylmethylcarbonate, manufactured by the France-based Negma. Its production has been discontinued in 1997.

Trenbolone enanthate is the most recently developed version of the trenbolone compound, becoming available to bodybuilders in mid-2004. This trenbolone ester is exclusively supplied by UG (underground) labs. Enterprising individuals have thought of providing alternative for the fast-acting trenbolone acetate and the discontinued Parabolan.

Structurally, trenbolone is a derivative of nandrolone, which makes it a 19-norsteroid. Two alterations, however, make this compound unique from its parent compound. The modifications at the c9 and c11 double bonds make it resistant to adverse metabolism, such as the effects of both the aromatase and 5alpha-reductase enzymes. This also reportedly increases its affinity to androgen receptors.

Undoubtedly, trenbolone has a strong binding affinity with androgen receptors; reportedly, three times as high as that of testosterone. As such, it is noted that its potency pretty much stays the same when entering various androgen target tissues. Because of this strong androgenic potency, trenbolone users can be susceptible to side effects like acne and hirsutism.

Trenbolone works by increasing nitrogen uptake by muscles, which leads to a corresponding increase in the rate of protein synthesis. Aside from being an anabolic agent, trenbolone is also an anti-catabolic drug. Trenbolone is also an effective fat-burner and an appetite stimulant.

As mentioned above, unlike its base compound trenbolone does not undergo reduction by the 5-alpha reductase enzyme; thus, trenbolone is ideal to use by those who are highly sensitive to estrogenic side effects. Because of this characteristic, trenbolone is oftentimes used by athletes who want to get rid of fat. Users who are after muscle mass will be disappointed with trenbolone. This compound is only capable of delivering lean tissue growth, especially if not stacked with a steroid with estrogenic activity.

It is possible trenbolone can suppress endogenous testosterone production. This is because that although trenbolone lacks estrogenic activity, this drug exhibits progestational activity. As such, it can cause side effects which are similarly observed with estrogen activity like negative feedback inhibition of testosterone production.

Short-term side effects with this drug include insomnia, decreased sexual drive, night sweats, and high blood pressure. Trenbolone’s exerting extreme damage to the kidney is yet to be substantiated by research.

Trenbolone acetate is injected at least once every two days because of its short half-life. With trenbolone enanthate, a once a week injection is enough to maintain an ideal hormone level. A novice is advised to take 50mg per day of trenbolone while an advanced user can administer 100mg per day. These dosages are recommended for those who are not stacking trenbolone with another Class I steroid; that is, another steroid that promotes muscle growth via the androgen receptors. If trenbolone is stacked with another Class I steroid, the dosage amounts can be reduced. Females are advised against using trenbolone since the androgenic side effects are a big possibility with this steroid.

Trenbolone Steroid Cycles:

Trenbolone is the best all around bulking and cutting anabolic on the market, with no other anabolic even coming close to the powerful results caused by trenbolone use.  An ideal trenbolone cycle is: 4 bottles of trenbolone, 2 bottles of Dianabol, and 2 bottles of Winstrol.