Testosterone Propionate

Testosterone Propionate is one of the many esterified variants of Testosterone available. It is an injectable compound with a slower rate of release than un-esterified Testosterone, but a faster rate of release than all other esterified forms commonly available. This is due to the larger Propionate ester attached to the  Testosterone molecule . This augments the release rate and half-life of Testosterone to that of a faster release than other common esterified variants, such as Testosterone Enanthate or Testosterone Propionate. The majority of Testosterone products that have been designed are single products that contain a single esterified form (such as this one), as opposed to Testosterone products which consist of a blend of several different esterified variants in the liquid (such as Sustanon 250, for example). Testosterone that is un-esterified holds a very short half-life, making its use very inconvenient and impractical (Testosterone suspension is one such Testosterone product that consists of pure un-esterified Testosterone, and does not have an ester bonded to its structure). The Propionate ester expands Testosterone’s half-life to that of 4.5 days.