I found a very interesting article regarding sorbitol. You may find the following paragraph to be an eye-opener.
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"Sorbitol is in almost everything these days... you used to be able to avoid it if you avoided diet stuff, but not now. It's in heavy doses in all sorts of diet items. However, it has branched out from it's original role as an artificial sweetener for sugar-free items... You can now find it in smaller doses in the following items that are not branded as sugar free, calorie reduced, or in any way different from regular fare...

"Watch for Sorbitol in some of these non-diet things -- this list is compiled by ME simply by reading the labels of the food I buy! None of this is diet either, just stuff off the shelf...

chocolates and brownies,

gum and candy, most consitently in "cool" or "ice" varieties, but any kind seems to be fair game these days.

baking mixes

nationally branded cookies

granola bars -- I can't find a single, soft granola bar on the market without Sorbitol, in my town!

toothpaste (which often doesn't list it's ingredients, beware of this one)

Chewable vitamins

prescription and OTC pill coatings

cough suppressants

Beano, which you might use if you had cramps, thinking it was gas! Big mistake if your gas was caused by Sorbitol in the first place...

Personal Lubricants -- not that you eat them (do you?) but a surprising effect was pointed out by one reader...

"Another visitor related a story getting a very uncomfortable infection similar to a yeast infection after intercourse, that didn't respond to overr-the counter yeast treatements. It was was successfully treated over several days with a creme by her doctor. After the third time it occured, she began to suspect her partner had some strange disease. Turns out that the personal lubricant she used contained Sorbitol. The sugar properties caused some of the naturally occuring baterias in that area to multiply rapidly into an infection. She switched to a non-sorbitol containing lubricant, and the problem never recurred."