The four testosterone esters are as follows; * 30 mg testosterone propionate * 60 mg testosterone<unk>  * 60 mg testosterone isocaproate * 100 mg testosterone<unk>  Cumulatively, a 1 ml of the oil solution contains exactly 250 mg of above mentioned testosterone esters. This particular numerical value is clearly depicted in the name of the product, Sustanon-250. 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. Sustanon 100 is administered once every 2 weeks and Sustanon 250 is administered once every 3 to 4 weeks. Sustanon is the preferred method of testosterone replacement in the United Kingdom as detailed in the British National Formulary. There was a brief shortage of Sustanon 250 during late 2011, due to shifting of manufacturing site, 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 athletes.
Testosterone propionate/testosterone phenylpropionate/testosterone isocaproate/testosterone decanoate
Testosterone propionate/testosterone phenylpropionate/testosterone isocaproate/testosterone caproate
Testosterone acetate/testosterone undecanoate/testosterone valerate
Estradiol benzoate/estradiol phenylpropionate/testosterone propionate/testosterone phenylpropionate/testosterone isocaproate
Estradiol dibutyrate/hydroxyprogesterone heptanoate/testosterone caproate
Testosterone propionate/testosterone enanthate/testosterone undecylenate
Estradiol diundecylate/hydroxyprogesterone heptanoate/testosterone cyclohexylpropionate
Estradiol hexahydrobenzoate/hydroxyprogesterone caproate/testosterone hexahydrobenzoate