I've been using colonix for about a month now and have had good results. However, my experience with the Kleritea did give me diarrhea one day, after I steeped it too long the night before. I would just be careful, and if you feel the need the increase the steeping time of the tea to help you have a movement, increase it slowly, like 10 seconds per night. I increased my time in one night by about a minute and a half, and that is what gave me diarrhea. I had to play with the time over a few days, and haven't had any problems since.