Yes, maltitol has an interesting side-effect: it is a VERY POWERFUL LAXATIVE. Pay close attention to the recommended serving size on the label. they aren't kidding. Exceeding it may mean staying VERY close to a bathroom.

On the other hand, I get diarrhea whenever I am on Atkins. (Most people get constipated.) So I take a daily capsule of psyllium husk and all is well.