Testosterone Propionate is the shortest-ester testosterone steroid. It’s an injectable compound with a slower rate of release than un-esterified Testosterone, but a faster rate of release than all the rest of esterified testosterone. There are some advantages and disadvantages to short-acting ester. The major disadvantage is that users have to inject Testosterone Propionate at a minimum every other day throughout the cycle to get proper results. The advantages, however, are easier control and prevention of potential side effects. Also because there is less ester per vial, there is more actual testosterone per injection, which produces better results. The Propionate ester expands Testosterone’s half-life to about 4 and a half days.
