Though Trenbolone does not aromatize, it does suppress your body’s ability to make its own testosterone. That’s why it is so very important to supplement with testosterone during your cycle. However, once your Trenbolone cycle ends, your testosterone production will not restart on its own. It is up to you to use a product called a SERM to trigger testosterone production and prevent negative Tren side effects . Clomid at 150mg or Nolvadex at 40mg is a great starting place; take it for two weeks, cut the dose in half, and take it for another two weeks. If necessary, you can stay at or half the dose yet again and continue for a fifth and/or sixth week, though this is not always required.
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 .