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The elimination half-life of nandrolone decanoate administered by intramuscular injection is approximately 6 to 12 days. [2] [3] Studies that have assessed the duration of nandrolone decanoate via its anabolic effects, for instance on nitrogen balance, have found that a single 50 to 100 mg intramuscular injection had a duration of about 18 to ...
Nandrolone, also known as 19-nortestosterone, is an endogenous androgen. It is also an anabolic steroid (AAS) which is medically used in the form of esters such as nandrolone decanoate (brand name Deca-Durabolin) and nandrolone phenylpropionate (brand name Durabolin).
The elimination half-life of testosterone in the blood or by intravenous injection is only about 10 minutes. [ 8 ] [ 33 ] Conversely, testosterone and testosterone esters in oil solution or crystalline aqueous suspension administered by intramuscular or subcutaneous injection have much longer half-lives, in the range of days to months, due to ...
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 decanoate has been investigated as a potential long-acting injectable male contraceptive. [4] [6] [7] [8] It has a longer duration of action than testosterone enanthate, but its duration is not as prolonged as that of testosterone undecanoate. [4
Nandrolone: 1:3–1:16 Ethylestrenol: 1:2–1:19 ... testosterone enanthate has an elimination half-life of 4.5 days and a mean residence time of 8.5 days and ...
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 ...
It has an extended elimination half-life in the body when administered via intramuscular injection. [20] Its duration of action is approximately one week and it is administered once every few days to once per week. [3] The elimination half-life and duration of action of NPP are much shorter than those of nandrolone decanoate. [3] [21