Testosterone propionate/testosterone phenylpropionate/testosterone isocaproate/testosterone decanoate

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.^[2][3] This particular numerical value is clearly depicted in the name of the product, Sustanon 250.^[4]

They are provided as an oil solution and are administered by intramuscular injection.^[5] 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.^[6]

Sustanon is the preferred method of testosterone replacement in the United Kingdom as detailed in the British National Formulary.^{[citation needed]} There was a brief shortage of Sustanon 250 during late 2011, due to shifting of manufacturing site,^[7] and a further shortage in mid-2012 due to manufacturing problems.^{[medical citation needed]}

This form of testosterone has long been a popular choice of anabolic steroid among bodybuilders while bulking.^{[citation needed]}

• Durateston
• Durandrone Forte
• Sustanon prolongatum
• Prarbolan

• Testosterone propionate/testosterone phenylpropionate/testosterone isocaproate
• Testosterone propionate/testosterone phenylpropionate/testosterone isocaproate/testosterone caproate
• List of combined sex-hormonal preparations § Androgens