Xylitol, a natural sweetener occurring in birch trees and botanicals as well as the human body. Xylitol does not promote tooth decay. The sugar alcohols in Ice Chips do not promote tooth decay. GI (1-100) refers to a food's ability to raise blood sugar. 100 is for pure glucose. Typically, < 55 is considered low GI. Xylitol's GI is 8 (very low).