Sold under the brand names Parabolan and Hex, trenbolone hexahydrobenzylcarbonate is an anabolic steroid manufactured in France by Negma Laboratories for medical use in humans but discontinued in 1997. Trenbolone (Tren) has been considered by many to be one of the most powerful and effective steroids for rapidly transforming your physique. This steroid is part of the 19-nor family of steroids, which is characterized by a modification at the 19 position.
Trenbolone is an excellent mass gainer, minimal water retention and hardening drug that is mostly muscle fiber. It has an incredible anabolic (muscle building) score and an anabolic rating of 500. What makes Trenbolone so anabolic compared to testosterone, which is a strong mass builder and has an anabolic score of 100? Many factors come into play here. Trenbolone greatly increases the level of the excessive anabolic hormone IGF-1 in muscle tissue (2). It also not only increases IGF-1 levels in muscle by more than twice, but also causes muscle satellite cells (cells that repair damaged muscles) to be more sensitive to IGF-1 and other growth factors. The amount of DNA per muscle cell can also be significantly increased.
Trenbolone also has a very strong binding affinity to the androgen receptor (A.R) and binds much stronger than testosterone. This is very important because the more strongly a steroid binds to the androgen receptor, the better it works at activating the steroid's A.R-dependent muscle growth mechanisms. There is strong supporting evidence that compounds that bind very tightly to the androgen receptor also aid fat loss. Think of receptors as different keys to locks and androgens, some keys (androgens) unlock (bind) locks (receptors) much better than others.
Trenbolone increases nitrogen retention in muscle tissue. This is very important because nitrogen retention is a strong indicator of how anabolic a substance is. However, the incredible mass-building effects don't end there. Trenbolone has the ability to bind to the receptors of anti-anabolic (muscle destroying) glucocorticoid hormones. It also has the effect of inhibiting the catabolic (muscle destroying) hormone cortisol.
Trenbolone promotes red blood cell production and increases the glycogen ratio, which significantly improves recovery. Parabolan is an excellent steroid for the dieting period. This steroid promotes enhanced muscular endurance better than most steroids. It also significantly increases the overall recovery rate of the individual.