The side effects of Trenbolone do include those of an androgenic nature, which isn’t surprising when this steroid’s androgenicity is so greatly pronounced. The androgenic side effects of Trenbolone are highly dependent on genetics and can include acne in sensitive individuals, accelerated hair loss in those predisposed to male pattern baldness and body hair growth. If you are not predisposed to male pattern baldness there is no risk of hair loss, but Trenbolone is notorious for promoting hair loss in those who are predisposed. Keep in mind, you were going to lose your hair anyway, but the use of Trenbolone may speed it up. Acne is largely the same; only those who are sensitive are at risk; many men can easily use Trenbolone without issue.
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 .