Having checked out the Wikipedia article on xylitol we have become completely xylitol-crazy. The Amazon search for xylitol returns sugar-substitute sweeteners, chocolates incorporating the wonder-substance (including orange and mint-flavoured chocolate), peach jam with xylitol, nasal sprays and even more recondite products.
We have purchased with discretion; the Xylitol chewing gum arrives on Monday ... :-)