when my child was a patient at the RCHospital in Melbourne (and to all that sent emails thank you very much they meant alot), there was a child with similar problems to what you had described.The mother had taken the child to a chinese doctor/naturopath and was told to eliminate sugar from the childs diet,then the mother decided to replace the sugar with these substitutes.his situation became quite severe and the doctors put the child on iv NO intake orally and many of these symptoms dissapeared over about a week.They the doctors would not say exactly what they thought BUT the child was discharged fully recovered on a normal diet with sugar intake etc etc just a note from 1st hand exprience etc take care trade well tracker