Lou026,It was the MayoClinic book on Digestive Health, under section on IBS, that referred to Immodium [and Pepto] as being not for long term use.Immodium slows the rate at which food leaves the intestines and increases intestinal water and ion [sodium] absorption to help solidify stools. It was simply stated, Not to use too often or too long as overuse can lead to constipation. [we almost wish!]For diarrhea-related IBS the book suggested peppermint tea [that doesn't help me because of indigestion with peppermint]. I don't know that this will have helped at all for you. But if anything, it sounds like it might be time to try something different.I've been trying some calcium, not in any high amounts that others have posted, and the calcium seems to help with the D. So has fibre such as oat bran instead of whole wheat bran.