Sustanon (also known as Sustanon 250) is one of the popular Testosterone products available today that is used extensively throughout the bodybuilding community and in medicine alike. Sustanon is actually the trade name for a mixture (also referred to as a blend) or 4 different esterified variants of Testosterone, each in a particular ratio. The exact blend of Testosterone esters in the Sustanon 250 blend is as follows: 30mg Testosterone Propionate 60mg Testosterone Phenylpropionate 60mg Testosterone Isocaproate 100mg Testosterone Decanoate These Testosterone esters form a combined total of 250mg of testosterone, hence the number 250 in the name Sustanon 250. The basis for combining these esters is for the purpose of creating a Testosterone drug that can provide the patient with the benefits of both a fast release of Testosterone into the bloodstream alongside a slower release in order to achieve peak blood plasma levels quicker and keep them sustained. This is very different from the use of a single Testosterone ester, such as Testosterone Propionate, which a single solitary product containing Testosterone Propionate, and only Testosterone Propionate.