Jarrow Xyli Pure Xylitol is a natural sweetener that has all the sweetness of regular table sugar with 30% fewer calories. Xylitol in a natural polyol, or 5-carbon sugar alcohol, which is found in many types of fruits and vegetables. It has a refreshing, cooling sweetness and no aftertaste, unlike many artificial sweeteners. It contains only about 2.4 calories per gram and is an excellent choice for low-sugar and low-carbohydrate diets.