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Testosterone enanthate has an elimination half-life of 4.5 days and a mean residence time of 8.5 days when used as a depot intramuscular injection. [2] It requires frequent administration of approximately once per week, and large fluctuations in testosterone levels result with it, with levels initially being elevated and supraphysiological. [2]
As oil solutions by intramuscular injection, the elimination half-lives of testosterone esters are 0.8 days for testosterone propionate, 4.5 days for testosterone enanthate, 20.9 days (in tea seed oil) and 33.9 days (in caster oil) for testosterone undecanoate, and 29.5 days for testosterone buciclate.
The different testosterone esters provide for different elimination half-lives in the body. Esterification of testosterone provides for a sustained but non-linear release of testosterone hormone from the injection depot into the circulation. Sustanon 100 is administered once every 2 weeks and Sustanon 250 is administered once every 3 to 4 weeks ...
Download QR code; Print/export ... This results in a longer circulation half-life for the protein, and raised levels. ... 8.3: 5.3 Testosterone enanthate: Steroidal ...
10–50 mg 2–3×/week Testosterone propionate b: Testoviron: Oil solution: 10–50 mg 2–3×/week Testosterone enanthate: Delatestryl: Oil solution: 50–250 mg 1x/1–4 weeks Xyosted: Auto-injector: 50–100 mg 1×/week Testosterone cypionate: Depo-Testosterone: Oil solution: 50–250 mg 1x/1–4 weeks Testosterone isobutyrate: Agovirin ...
[4] [3] As such, testosterone cypionate and testosterone enanthate are considered to be "functionally interchangeable" as medications. [4] For reference, testosterone enanthate has an elimination half-life of 4.5 days and a mean residence time of 8.5 days and requires frequent administration of approximately once per week. [21]
Testosterone undecanoate has a very long elimination half-life and mean residence time when given as a depot intramuscular injection. [27] [7] [8] Its elimination half-life is 20.9 days and its mean residence time is 34.9 days in tea seed oil, while its elimination half-life is 33.9 days and its mean residence time is 36.0 days in castor oil.
Testosterone undecanoate, an ester of testosterone and one of the most widely used androgen esters.. An androgen or anabolic steroid ester is an ester of an androgen/anabolic steroid (AAS) such as the natural testosterone or dihydrotestosterone (DHT) or the synthetic nandrolone (19-nortestosterone).