This link should be required reading for everyone with IBS~~ ttp://www....cohm/supplements/sol_fiber1.asp Please give yourself time to try all the diff brands of fiber, and MOST importantly, take enough. Heather advises us to slowly increase the fiber amount, but I found that just gave me more frequent & bulkier diarrhea. When I went straight to the full amount of METAMUCIL(3 T am & before dinner), I only had discomfort the first 2 days. But I didn't mind because I had solid stools. (drink plenty of water during the day)Metamucil is discouraged by Heather, but its the only fiber I've tried so far that helps instead of hurts. But everyone's diff. If you do a search here on fiber, you'll see how diff everyone is!I also take probiotics and natural antibacterials. I've never had to take immodium or any drug. And believe me, when IBS first hit--I had it really, really bad.I like your doctor. I wish there were more like him/her!All the best, T-