Trenbolone is a popular synthetic anabolic–androgenic steroid commercially marketed as a veterinary drug and was formerly used on humans for clinical trials.

Trenbolone acetate is an alternative or derived nandrolone and also an injectable synthetic anabolic androgenic steroid (AAS).  It is an androgen ester used by veterinarians to increase appetite and muscle growth in the livestock.

Trenbolone was first synthesized in 1963 and approved for the growth of beef cattle in 1987.[1] Trenbolone acetate was marketed as Finaject and Finajet in the first administration. And following by the pellets named Finaplix.

It is considered as a potent anabolic steroid among athletes. It has been used by bodybuilders for muscle building. The steroid is also known as Trenabol which can be obtained from the underground.

Trenbolone acetate was popular in the early 80s among athletes and bodybuilders. At that time, large quantities of the steroids were coming from Europe illegally.

However, in 1990, the drug was banned.[2] People who are caught selling or in possession of it can be arrested and convicted of drug trafficking. While the underground anabolic steroids manufacturers are the only suppliers of the drugs presently.


Trenbolone possesses androgenic and anabolic effects. When the trenbolone esters are fully metabolized, it has increased the uptake effect of ammonium ion in the muscles. The absorption of ammonium leads to an increase in the protein synthesis.

Trenbolone is five times more powerful when compared with testosterone. However, Trenbolone acetate doesn’t cause water retention during mass muscle gaining like testosterone.

Trenbolone Acetate

The steroid affect the androgen receptor to unveil its potential to match the influence of the DHT (dihydrotestosterone). The evidence suggests that the steroid not required DHT conversion to enhance the secondary sex characteristics in males.

Trenbolone acetate produces insulin growth factor-1 known as IGF-1. It is a protein-based natural hormone that plays a vital role in the muscle rejuvenation and recovery. The hormone also influences the way of the cells in the body works.

It helps to increase the total count of red blood cells. When a large number of red blood cells are released, oxygenation is activated in the blood. Oxygenation improves the muscular enhancement and promotes muscle recovery faster.

The unique characteristic of the steroid is able to burn fat quicker. It’s naturally non-aromatizing properties make it a great fat burning agent.

Trenbolone acetate suppresses the level of glucocorticoids like the cortisol. Where the glucocorticoid properties function opposite of what the androgens does to the body, depletion of muscle tissues and promotion of fat gain.

Uses of Trenbolone

Veterinarians use Trenbolone acetate in their medical practices. It is referring to the medicine marketed as Finaplix in the livestock industry for production.[1] The drug was initially formulated to enhance mass muscle gain and androgen levels in the cattle. This is intended to promote fast growth in the livestock prior to be slaughtered.[3]

Trenbolone esters are used for the muscle building by athletes and bodybuilders. They misuse the steroid as a performance enhancing drug over the years. Since the drug was not approved in the United States and other countries also such use is considered illegal.


Trenbolone acetate is used by competitive bodybuilders and fitness models for lean muscle gain. Trenabol are popular underground steroid typically used for their bodybuilding events or competitions. It can stay longer than Trenbolone acetate if it is taken intramuscularly.

The drug has not been approved for medical uses in humans. Its medical properties have less therapeutic effects and benefits. Nevertheless, it may contain mild anabolic androgenic effect that is similar to other steroids. This can be effective in treating conditions like wasting syndromes, androgen deficiency and muscle atrophy. It can also be used in treating some types of anemia.[4]

Trenbolone Effects

Trenbolone may have numerous advantages for bodybuilders but, it still has some effects on the users. It will increase dryness, vascularity, hardness and density. It is a popular strength enhancer and an efficient drug for gaining muscles. It causes a quick reduction of body fat.[1]

Trenbolone is effective in preserving lean muscle tissues during cutting cycle or phase. When people are on a diet, the primary objective is to maintain lean tissue and lose more fat. However, if not able to preserve the lean muscle mass, the purpose of dieting would not be achieved.

Trenbolone Effects

Trenbolone acetate increases the rate of fat burning while preserve the muscle mass. With its strong metabolic effect which enables it to burn more fat in the body than usual. The strong binding of the androgen receptor affinity give it an immediate control over the fat loss process.[1]

It enhances muscular endurance. When taken the muscles would be able to withstand long and strenuous activities. Apart from the enduring effect, an overall of muscle recovery rate will be significantly improved.

The steroid escalates the repair of the muscle tissue tears and breaks down during training. The user would be able to recover quickly without any resistance.

Trenbolone Side Effects

Just like other anabolic androgenic steroids, Trenbolone acetate has many side effects. The powerful impact of its androgenic nature causes it to promote the virilization effect.[1]

This is the reason why the drug is not recommended to women for performance enhancing and physique purposes. The side effects may possibly occur in women include virilization, clitoral enlargement, voice deepening and excessive body or facial hair growth known as hirsutism.[5]

Trenbolone acetate possesses an androgenic activity. The common side effect cause by the anabolic androgenic steroids uses included acne, seborrhea oily skin and accelerated scalp hair loss.[1] However, these effects depend on the genetics of the user.

Men who are susceptible to hair loss issues like baldness. It will worsen the condition lead to become permanent bald from the effect.[5]

Trenbolone Side Effects

Trenbolone can also cause cardiovascular problems and negative effects on the blood pressure. It has an adverse and strong effect on the cholesterol levels. This reversed effect on cholesterol happens through the suppression of high-density lipoprotein (HDL) good cholesterol and raising the low-density lipoprotein (LDL) bad cholesterol.[6]

Trenbolone is extremely potent because of its anabolic and androgenic properties. However, this may cause Tren cough effect and acute respiratory distress to its users.

Because of its strong progestogenic activity which contribute to gynecomastia, or enlargement of the breast tissue.[1]

Trenbolone Alternative

An alternative to Trenbolone; an excellent muscle builder and retains nitrogen, the critical component to muscle gain.  It releases testosterone in a substantial amount, unlike steroid.

Trenbolone alternative doesn’t have side effects like Trenbolone. Bodybuilders can make use of it without experiencing virilization. It is considered a safe, legal alternative replacement for the underground steroids. Which are legitimately used for the performance enhancement purpose.

Trenbolone Alternative


  1. (2011) Anabolics By William Llewellyn
  5. (2008) Pharmacology of anabolic steroids By A T Kicman

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