My son is 12 and has been diagnosed with a fructose intolerance after having the hydrogen breath test done. I am looking for a supplement that has the enzyme Xylose isomerase in it to help with the absorption of the slight amount of fructose he may get, am not having any luck finding this. I have already cut out all the fructose I can from his diet but there are still fructose just in plain fruits and vegetables so it is impossible to cut out completely. I was hoping this will help and how and where to find it.