This is one of the dangers of trenbolone - it has many side effects that people don't expect from it. It is an injectable steroid, but yet it causes certain liver stress. It is an injectable steroid, but it hits your stomach flora really hard, so you need to supplement yourself with probiotics when using it if you are to avoid this sort of problems. Start using some good probiotics and dygestive enzymes, and your stomach should be alright really soon. When getting it from a drug store that they keep those supplements in the fridge, and do the same. These have live bacteria that will die in warm temperatures, hence the reason these probiotics should be always kept in a fridge. I have personally seen many pharmacies and drugs stores that will have probiotics on the shelves with the other supplements and drugs, which makes them basically useless, since all the good bacteria in them is surely dead.