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. 
The side effects of Primobolan Depot will include natural testosterone suppression in all men who supplement with the Methenolone hormone. However, the rate of suppression will be weaker than many anabolic steroids, but with performance level doses it will be strong enough to warrant the inclusion of exogenous testosterone. This will prevent you from falling into a low testosterone condition, which not only comes with numerous possible symptoms but is also extremely unhealthy. Once the use of Primo has come to an end and all exogenous hormones have cleared your system, natural testosterone production will begin again. Most men are encouraged to implement a Post Cycle Therapy (PCT) program in order to facilitate a stronger recovery. This will not completely bring your testosterone levels back to their peak, this will still take time, but it will cut down the total recovery time. It will also ensure you have enough testosterone to function properly while your levels continue to naturally rise. Important notes – natural recovery assumes no prior low testosterone condition existed. Natural recovery also assumes the Hypothalamic-Pituitary-Testicular-Axis (HPTA) was not severely damaged due to improper anabolic steroid use .