And on the back it says, "If you accidentally swallow more than used for brushing, get medical help or contact a Poison Control center right away." And then in the directions again, it says, "do not swallow." I'm like, fucking great... I'm using this to brush my teef, and if I swallow it, I die! FWIW, it's Crest Advanced Cleaning (with micro-cleansing crystals).