Did you know there is often gluten in toothpaste? It's because gluten is a nice, sticky protein that helps the toothpaste stay, well, a paste. Corn and grain-based starches have long been the best way to thicken and stabilize toothpaste.
According to Colgate, all Colgate, Ultrabrite, and PreviDent toothpaste are gluten-free. In addition, all Colgate...