PUR Peppermint gum gives a blast of crisp, cool, pepperminty flavour in every bite. Great taste and the natural digestive benefits of peppermint? Now that's PUR perfection. Why choose PUR gum? Aspartame Free. Pur Gum is the number 1 selling aspartame-free better tasting, long-lasting gum. Now there's a great tasting gum made especially for people who are looking for a healthy alternative to aspartame chewing gum.