Better than a Toothbrush Gluten Free Non-GMO Sugar Free No Aspartame Vegan Epic Xylitol: Your All-Natural Defense Against Tooth-Eating Acid Unlike a toothbrush, Epic gum disrupts toot-eating acid attacks as they are happening. Less acid means fewer cavities. One piece of Epic gum contains 1.06 grams of xylitol. That’s more than anybody. That means cavities do not want to meet use in a dark alley. But with other gums they might be all, like, “Ooooh. How cute.â€