Tren E is exclusively for the building up of muscle mass and increasing strength. It is a steroid that is oil based and mainly used for veterinarian purposes but is made illegally as well. Body builders use it in order to minimise the number of injections they need to have. It does have very strong properties of androgens and can produce excessive sweating, nightmares, insomnia and a noticeable decrease in cardiovascular capability. Anyone who does sport or anything physical should not take Tren E. When you take Tren E you need to increase your fluid intake to make up for the excessive sweating. Other side effects include:
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. 
Trenbolone is often touted as an anabolic steroid that has ‘harsh’ side effects and tends to frighten many individuals who are considering the use of this compound. First and foremost, it should be established that because Tren does not aromatize into Estrogen at any dosage, there is no risk for encountering Estrogenic side effects . The Trenbolone side effects of particular concern are its androgenic side effects, and other side effects that are not usually seen with any other anabolic steroids (such as insomnia, excessive sweating, etc.).