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History of trenbolone

History of Trenbolone

Trenbolone Acetate - Synthesized in 1963

The history of Trenbolone or Tren dates back to the early 1960's when in 1963 this androgenic-anabolic steroid (AAS) was synthesized by a French-based pharmaceutical company known as Roussel Uclaf. Trenbolone Acetate was first classified as a veterinary AAS, so the first industry to make good use of this drug was the agricultural industry, as the drug was approved for use on livestock in the 1960's.

By the 1970's, the use of Trenbolone Acetate on cattle was very prevalent in the U.S and Europe. This steroid was used to promote the growth of lean muscle mass in cattle and in effect, increase the volume of beef production.

Trenbolone in the 1980's

Initially, Tren was made available for sale in the market under the brand names of Finajet and Finajet.

However, the originators of the drug stopped the production of the intramuscular form of administration of Trenbolone  Acetate in cattle, in the latter part of the 1980's. Instead they began the production of pellets that they named Finaplix which were made to replace the intramuscular form of administration of Tren in cattle.

With the use of a pellet implanter gun, the pellets are administered by subcutaneous injection to the posterior site of the cattles ear.

This administration of Trenbolone was also very effective in building lean muscle mass in livestock and the pellets were administered until the cattle was ready to be slaughtered. This really helped in earning livestock farmers a lot of profit due to the increase in meat production.

However, Tren is known to remain in the meat even after the cattle has been slaughtered.

This led to growing concerns about the possible side effects of the drug on humans through the consumption of meat with traces of Tren in it. As a consequence, the use of Tren on livestock was outlawed in the U.S and Europe with slaughtered cattle being routinely examined and tested for any indication of Tren in their meat.


Trenbolone Acetate as a Performance Enhancement Drug

While there is no official medical use for Trenbolone, by the early part of the 1980's this androgenic-anabolic steroid (AAS) became a popular drug of choice for athletes and bodybuilders. At this time, huge quantities of Tren were illegally supplied from a number of European countries to other parts of the world including the U.S.

However, by the latter part of 1980's the illegal supply of Trenbolone Acetate dropped tremendously due to the increasing awareness by the sporting and general public of its use as a performance enhancing drug in professional sports. There was also an increasing awareness of the possibility of adverse health implications to professional athletes from the continued use and misuse of the drug.


Today, the World Antidoping Agency or WADA has placed Trenbolone Acetate on its list of banned drugs. With professional athletes regularly tested for the AAS and it's metabolites before, during and after major sporting events.

Despite the ban on Tren, athletes and bodybuilders still use the drug in improving their muscle tone as well as building strength, stamina and endurance.

In the history of Trenbolone, users of the drug in competitive sport tend to follow a well timed and carefully thought out Tren cycle. This Tren cycle would offer these athletes all the benefits of using the AAS while still ensuring that they evade detection during a routine drug test.