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Testosterone propionate/testosterone phenylpropionate/testosterone isocaproate , sold under the brand name Sustanon 100 , is an injectable combination medication of four testosterone esters, all of which are androgens/anabolic steroids. They include:
They are provided as an oil solution and are administered by intramuscular injection. 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.
The medication was a smaller dose than Sustanon 250 and was usually reserved for pediatric use.
Sustanon 100 has not been produced since 2009. Sustanon 100 is manufactured in India by Zydus.