Some bodybuilders and athletes use trenbolone for its muscle-building and otherwise performance-enhancing effects. [ citation needed ] Such use is illegal in the United States and many other countries. The DEA classifies trenbolone as a Schedule III controlled substance under the Controlled Substances Act .  Trenbolone is classified as a Schedule 4 drug in Canada  and a class C drug with no penalty for personal use or possession in the United Kingdom .  Use or possession of steroids without a prescription is a crime in Australia .  The infamous "duchess" cocktail administered to Russian athletes at the Sochi Winter Olympics consisted of oxandrolone , metenolone , and trenbolone. 
If you inspect boldenone in theory, one would tend to believe that it is almost as same as dianabol, except for one major difference. Dianabol is a 17AA hormone to be taken orally, and the half-life for it is 8 hours, while Equipoise/ Boldenone has very long undecylenate ester that had been attached to it to make it injectable in the form of a soluble oil, and it is far longer acting compared to Dianabol. As soon as it is injected into your system, the enzymes will break down the long ester chain from the Equipoise hormone, until the pure hormone form is left, where it would be able to interect with the adrogenic receptors in the muscles.