Fructose is an absolute no-no for me. I started having IBS symptoms in 1985, which later developed into Crohn's disease. I was able to get it under control by drastically altering my diet, and for the last 14 years, I've been pretty much symptom-free. A couple of years ago, my wife and I found out that my daughter had an allergy to corn, and as we investigated all the ingredients and additives derived from corn, I made an amazing discovery: all of the items that bothered my bowel contain some form of corn product. By avoiding anything with corn in it, I stay symptom-free. As soon as I eat anything with corn, the bloating, gas, cramps and diarrhea return. I can, however, eat sugar (cane or beet) or honey without any problems.
Pretty much all commercially produced fructose comes from corn, as well as glucose, dextrose, sorbitol, liquid sugar, golden syrup, table syrup, and most of the artificial sweeteners. Unfortunately for me, very few products are actually sweetened with sugar anymore - fructose has taken over because it's cheaper.
Dx IBS 1985. Dx Crohn's 1991.
Diet-controlled since 1992. Symptom-free.
No drugs, no herbs, no surgeries.