It is difficult to determine where Trenbolone Enanthate places itself in terms of popularity among the three main variants of Trenbolone (Trenbolone Acetate, Trenbolone Enanthate, and Trenbolone Hexahydrobenzylcarbonate). Some might agree that Trenbolone Enanthate is a close tie with Trenbolone Hexahydrobenzylcarbonate (Parabolan) in terms of second most popularity next to Trenbolone Acetate, which has reserved first place among athletes and bodybuilders for preference. Trenbolone is a very potent and powerful anabolic steroid that, in this case, is a long-estered variant. That is to say that Trenbolone Enanthate is affixed with the Enanthate ester, a long ester that extends the half-life of Trenbolone upwards of 7 – 10 days. This is quite different from Trenbolone Acetate, which expresses a half-life of approximately 3 days. Ultimately, there are both advantages and disadvantages to both, which will be addressed shortly. Trenbolone Enanthate in terms of release rate and pharmacokinetics is literally identical to Testosterone Enanthate (or any anabolic steroid affixed with the Enanthate ester). Anabolic steroids such as Trenbolone Enanthate are designed to provide a fairly quick release of the hormone into the body in the initial 2 days or so after initial administration, and blood plasma levels remain high, slowly tapering off over a two week period. This could be considered a sustained release. Because the half-life of Trenbolone Enanthate is quite close to Parabolan (Trenbolone Hex), the two are easily interchangeable with one another.
It should be made perfectly clear, however, that the esters affixed to the hormone (Acetate, Enanthate, or Hex) merely serve to alter the release rate and half-life of the drug – they do not alter the strength, potency, or pharmacodynamics of the hormone that the ester is affixed to. Trenbolone Acetate expresses a 3 day half-life, Trenbolone Enanthate expresses a 7 – 10 day half-life, and Trenbolone Hexahydrobenzylcarbonate (Parabolan) expresses a 14 day half-life.
Trenbolone as the base hormone is an extremely powerful hormone, approximately 5 times the strength of Testosterone in both anabolic and androgenic strength, making Trenbolone an extremely potent anabolic steroid. Roussel-UCLAF was the firm during the late 1960s to initially synthesize and investigate Trenbolone, first with Trenbolone Acetate, and then with other long-acting Trenbolone esterified variants. The interesting aspect of Trenbolone’s history is that Enanthate was not specifically researched by Roussel-UCLAF, though was metaphorically ‘on the backburner’. It was never officially manufactured as an FDA-approved (or any equivalent) pharmaceutical drug meant for human use or sale on the prescription market. The other two variants of Trenbolone (Acetate under the brand name Finajet/Finaject and Hex under the brand name Parabolan) both experienced brief periods of official sale and use on the pharmaceutical drug market, although briefly. Trenbolone Acetate’s life on the pharmaceutical market was short lived in the 1970s, while Parabolan reigned briefly during the 1990s. It was not long until they were pulled from the market and their status as human-use prescription drugs stripped. Trenbolone Enanthate, on the other hand, would surface much later on in 2004 as an underground lab (UGL) product, made by British Dragon and sold as Trenabol. British Dragon was the first to manufacture and offer this ester of Trenbolone, dosed at 200mg/ml, and eventually manufactured a full line of Trenbolone based products that were all underground products for sale on the black market. None were FDA-approved, manufactured by pharmaceutical companies, or sold in pharmacies.
Trenbolone Enanthate was never approved for either human or veterinary use, and is still to this day strictly an underground origin product that is only manufactured by underground laboratories. It is impossible to find any pharmaceutical grade Trenbolone Enanthate that is made to pharmaceutical standards and meant for human use. Its popularity is only as big as it currently is due to its popularity growth and boom on the black market and is extremely common among bodybuilders and athletes, probably because it is one of the few convenient long-acting Trenbolone esters. By the time Trenbolone Enanthate arrived on the scene, the vast majority of Trenbolone users were utilizing the Acetate ester, and still remains the most common form of Trenbolone even today. Although the original British Dragon laboratories shut down in 2006 and underwent a law enforcement bust, the legacy of Trenbolone Enanthate continues today and countless other underground labs continue to manufacture it, ensuring a steady and guaranteed supply on the black market.