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. 
As eluded to before, each and every anabolic steroid carries an anabolic and androgenic nature, and as such, we can define this nature by its specific rating. The anabolic and androgenic rating of a particular steroid defines its nature in the anabolic and androgenic regard, but as discussed, what is more important is how these natures translate into action once in the body. Recall our example of Halotestin, a powerful steroid that carries a strong anabolic and androgenic rating, in-fact they are massive yet it displays very few androgenic traits. Then we have steroids like Anadrol that while it carries a modest androgenic rating and decent anabolic rating it translates into action of a higher nature regarding both.