Sustanon
Sustanon 250 is a trade name owned by Organon Pharmaceuticals for an oil-based injectable blend of four esterized testosterone compounds:
- 30 mg testosterone propionate
- 60 mg testosterone phenylpropionate
- 60 mg testosterone isocaproate
- 100 mg testosterone decanoate
Sustanon 100 was similar, though with three esters. This smaller dose was usually for pediatric use.
- 20 mg testosterone propionate
- 40 mg testosterone phenylpropionate
- 40 mg testosterone isocaproate
Sustanon 100 has not been produced since 2009.[1]
The different testosterone esters provide for different half lives. Esterization of the testosterone molecules provides for a sustained (but non-linear) release of testosterone from the injection depot into the blood plasma.
While the intention of the mixed testosterone esters in Sustanon is to provide more stable serum testosterone levels, a single long-ester testosterone, such as testosterone cypionate or testosterone enanthate, may actually provide more stable serum testosterone levels.[medical citation needed]
Sustanon is the preferred method of testosterone replacement in the UK as detailed in the British National Formulary.[citation needed] There was a brief shortage of Sustanon 250 during late 2011, due to licensing problems[2] and a further shortage in mid-2012 due to manufacturing problems.
This form of testosterone is a popular choice of anabolic steroid among bodybuilders and athlete.
See also
References
- ↑ http://www.nelm.nhs.uk/en/NeLM-Area/News/2009---March/09/Discontinuation-of-Sustanon-100-testosterone-replacement-therapy/ Archived September 29, 2009 at the Wayback Machine
- ↑ http://www.oxfordshirepct.nhs.uk/professional-resources/prescribing/prescribing-points/documents/PrescribingPointsJuly11Vol206.pdf[dead link]
