I think if you read through all of his posts he says that he got the colonic months after doing the flush. (and in hindsight knows that was too long afterwards). I had a similar experience to the poster and now consider the colonic/colema essential within a few days of doing the flush. this is why Andreas so strongly advises only doing the flushes if you are serious about the post flush colon cleansing. done in this matter i have not had any problem for over 10 flushes and consider it very safe. as long as you follow with good bowel cleansing, i don't think there is anything to fear.