Just found this info on the manufacuror's website:

How The Body Uses Isomalt

Isomalt, like all polyols, is a low digestible carbohydrate which is only partially digested in the intestines. In the lower part of the intestinal tract, some of the non-absorbed portion is metabolized by colonic bacteria. These normal physiologic processes, which may sometimes in some people cause softer stools or more intestinal gas than usual, are similar to how the body responds to high-fiber foods, beans and prunes.

A person’s response to low digestible carbohydrates, including isomalt, varies depending on the individual and factors such as one’s total diet, how much and when this type of carbohydrate is consumed. The few people who might be sensitive usually have no problem if they start with small portions and gradually increase their consumption of low digestible carbohydrates.

Robert