I am a C as well and at first I didnt think that HFCS was bothering me either because it didnt give me the usual gas and bloating that I get from many other things, but as soon as I elimiated it, within a day I could feel the difference. It wasnt significant but I think it will help me to become stable. It is defiantely worth a try. I havent used any artificial sweetner in over 2 months now.