XyloBurst Grape Fruit Sours Tin, so convenient you can take them anywhere. XyloBurst fruit sours are sugar-free and sweetened exclusively with 100% all-natural xylitol! Professional studies have shown that consuming products with high amounts of xylitol, along with daily brushing, may reduce the risk of dental caries. Just like XyloBurst gum, XyloBurst fruit sours will leave your mouth feeling clean and refreshed. and remember 6 to 8 grams each day is recommended to help improve oral health.