Read the study abstract in one of the other comments here, it's based on a single serving of soda. Seems kinda bad, which is interesting because the sugar alcohols are generally benign. They're non nutritive but most don't cause any problems except stomach upset in some people. I find they have an off taste, many people do not though.

Edit: can brewing yeasts feed on it? Or are you using it to adjust sweetness level? My brewing experience is limited, I have only used wild yeasts and a few of the Safale strains