What is testosterone enanthate?
Testosterone enanthate is a long-acting injectable form of testosterone attached to an enanthate ester, commonly used in TRT with a half-life of approximately 8-10 days and typical dosing intervals of every 7-10 days.
Testosterone enanthate is an injectable testosterone compound in which testosterone is bonded to an enanthate ester. The ester slows the release of testosterone into the bloodstream, creating a sustained effect that allows for less frequent injections compared to shorter-acting formulations.
In testosterone replacement therapy, enanthate is valued for its pharmacokinetic profile. The half-life is approximately 8-10 days, meaning patients typically inject once weekly or every 7-10 days. This differs from testosterone cypionate, which has a similar half-life (also around 8-10 days) but is often preferred by some clinics due to slight differences in ester weight and formulation consistency. Both are considered long-acting esters and deliver comparable dosing schedules in practice.
Testosterone enanthate comes in oil-based solutions at various concentrations, commonly 200 mg/mL or 250 mg/mL. Dosing varies by patient need and baseline testosterone levels, with typical therapeutic ranges falling between 50-100 mg weekly. Providers specializing in hormone therapy adjust dosing based on bloodwork to reach physiologic targets while minimizing side effects.