What is XylitolXylitol is an all-natural ingredient found in berries, vegetables and birch trees. How does it fight cavities?The FDA has recognized that, when used in foods, Xylitol may reduce the risk of tooth decay. Is it safe?Yes. Xylitol has been approved by the FDA food additive. Why does it sound like a chemical?The name comes from the wood fiber of the birch tree, called Xylan, but Xylitol is found in all sorts of berries and vegetables.