Parabola is an upgraded form of trenbolone, a popular and potent anabolic steroid – upgraded because it features an extended release of ester. It is designed to support the development of lean muscles and short bursts of energy. It has an exceptionally high anabolic rating, and is consequently popular with professional body builders and weight lifters. And, since it comes with an ester attached, it remains in the blood stream for longer and performs better than most other steroids.