A negative side that I may have felt from the Tren is soft peter. It has only happened twice but I could not get it up and keep it up. I don't know for sure if this was the tren or just a bad day!! Whatever the case I went to wally world and bought me some male libido enhancement and pop two when I wanna kill it and then it's all good in the hood. I was informed that the tren gives you a prolactin buildup and therefore you may have an erection malfunction from time to time. I was also told as soon as I am off and start my pct everything will go back to normal! But as I said, this has only happened twice in 4 weeks and could be from anything??