Pur-Gum Spearmint: A strong and crisp mint flavour that leaves breath feeling fresh for hours! Pur-Gum Gum is naturally sweet! They have made simple substitutions to promote a healthier worry-free lifestyle. Xylitol looks and tastes identical to sugar and is proven to promote oral health by reducing cavities by 33% with regular use. Xylitol also contains 40% less calories than table sugar.