Trenbolone also increases the levels of nitrogen in muscle tissue, improves feed efficiency, and also increase mineral absorption. Feed efficiency is a term used in the livestock industry that basically refers to how much food is required in order to build a certain amount of meat on animals. The higher your feed efficiency, the better the food you eat will be utilized when it comes to building lean muscle. The list of benefits goes on and on, but there is one last thing I want to mention: Trenbolone is a highly androgenic hormone. Comparing it to testosterone again, which has an androgenic ratio of 100, Tren has 5 times that amount resulting in a whopping androgenic ratio of 500. This gives it great strength building properties as well as allowing it to improve the body’s estrogen/androgen ratio, reducing water under the skin.
Some bodybuilders and athletes use trenbolone esters for their muscle-building and otherwise performance-enhancing effects.  Such use is illegal in the United States and many other countries. The DEA classifies trenbolone and its esters as Schedule III controlled substances 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 allegedly administered to Russian athletes at the Sochi Winter Olympics consisted of oxandrolone , a metenolone ester, and a trenbolone ester.