Parabolan, officially labeled Trenbolone Hexahydrobenzylcarbonate is a structurally altered form of Nandrolone. Nandrolone being the hormone most commonly associated with Deca Durabolin (Nandrolone Decanoate). For the Trenbolone hormone to exist, the Nandrolone hormone has an added double bond at carbon positions 9 and 11. This greatly increases the hormones androgen binding affinity and inhibits the hormone from aromatizing. Parabolan carries no aromatizing nature. This slight modification also slows down the metabolism of the hormone resulting in a far more potent anabolic and androgenic nature than Nandrolone, far beyond testosterone as well. In order to understand this hormone’s power, consider its anabolic and androgenic ratings. Trenbolone carries an anabolic rating of 500 as well as an androgenic rating of 500. All steroids carry a rating measured against the rating of testosterone, which carries a rating of 100 in both categories. More importantly, the Trenbolone hormone’s ratings match up perfectly to its translating activity. This is not always the case as can be seen in steroids like Halotestin (Fluoxymesterone) and Proviron (Mesterolone) to name a few. You will be hard pressed to find an anabolic steroid that carries the raw anabolic and androgenic power of Parabolan.