I caught a bug that made me stop taking the pretiva and forgot to start taking them again. I get my TU in a couple of weeks and then I'm off to Thailand, I also need to get some more pretiva so I will get back on it next month. I can definitely say that I noticed positive benefits from taking pretiva with no side affects, I didn't take much notice of any growth effects but I will do this next time round, I like them and will continue taking them but I like the idea of having breaks.