PUR is the #1 Better for you leading gum brand. PUR Gum is aspartame free, sugar free, and sweetened with 100 percent Xylitol, a natural sweetener derived from plants and known for its dental benefits like reducing tooth decay. PUR products are made with all-natural ingredients and feature a simple ingredient list compared to over 15 artificial, chemically based ingredients found in competitors products. Chew better gum, chew PUR.