Did you get any xylose isomerase from a company in the Netherlands called Disolut? If not, can you recommend some European companies? You wonder how pure some of the products are; maybe they don't have an FDA. I'm not sure the enzyme will help me because if I eat any sugar, including fructose and glucose, I get immediate stomach upset, and the enzyme apparently doesn't start working until further down. What was your daughter's immediate response? Thanks so much!