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Testosterone can be taken by a variety of different routes of administration. [2] [3] These include oral, buccal, sublingual, intranasal, transdermal (gels, creams, patches, solutions), vaginal (creams, gels, suppositories), rectal (suppositories), by intramuscular or subcutaneous injection (in oil solutions or aqueous suspensions), and as a subcutaneous implant.
Pharmacokinetics of testosterone esters Testosterone ester Form Route T max Tooltip Time to peak levels t 1/2 Tooltip Elimination half-life MRT Tooltip Mean residence time; Testosterone undecanoate: Oil-filled capsules: Oral? 1.6 hours: 3.7 hours Testosterone propionate: Oil solution: Intramuscular injection? 0.8 days: 1.5 days Testosterone ...
Testosterone propionate is a testosterone ester and a relatively short-acting prodrug of testosterone in the body. [7] [4] [1] Because of this, it is considered to be a natural and bioidentical form of testosterone. [11] Testosterone propionate was discovered in 1936 and was introduced for medical use in 1937.
The four testosterone esters are as follows; 30 mg testosterone propionate [1] 60 mg testosterone phenylpropionate [1] 60 mg testosterone isocaproate [1] 100 mg testosterone decanoate [1] Cumulatively, a 1 ml of the oil solution contains exactly 250 mg of above mentioned testosterone esters.
Testosterone is a medication and naturally occurring steroid hormone. [9] It is used to treat male hypogonadism, gender dysphoria, and certain types of breast cancer. [9] [10] It may also be used to increase athletic ability in the form of doping. [9]
Androgen replacement therapy (ART), often referred to as testosterone replacement therapy (TRT), is a form of hormone therapy in which androgens, often testosterone, are supplemented or replaced. It typically involves the administration of testosterone through injections, skin creams, patches, gels, pills, or subcutaneous pellets.
[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 is a testosterone ester and a prodrug of testosterone in the body. [10] [9] [7] Because of this, it is considered to be a natural and bioidentical form of testosterone. [17] Testosterone undecanoate was introduced in China for use by injection and in the European Union for use by mouth in the 1970s.