I've seen a huge improvement in my bowel function since then, and they really don't have any negative side effects as far as I know.
~Omeprazole is also my friend. I'm not sure how much
it helps with my current set of symptoms, but while I was still having a lot of stomach pain and problems with acidity, my GI and GP wanted me on omeprazole and I think it helped. I'm still taking it now because they don't think it can hurt and don't want to change anything that might be helping.