Hi, I started Xenical about 7 wks ago and I have always suffered with IBS, to be honest for me its not alot of difference, before I started the Xenical I would have to rush to the loo, and now is no different apart from the fact ive lost weight!!! I have always had stabbing pains in my bowel but because I am watching what I eat that is ok. Hope ur having a gd weekend. x