Arm and Hammer Peroxi-Care… my mouth and lips starting getting numb after a couple of days of using this product. It got so bad I could not taste anything anymore and I can only describe the inside of my mouth as 2nd degree burns on all surfaces. I have used Arm and Hammer toothpaste in the past with no problem. This new stuff is total crap. Luckily my taste came back after about a week of discontinued use or there would be a huge lawsuit! Many other complaints can be found online.