A man says he got a throat ulcer after using Hello Activated Charcoal Toothpaste. He's not alone—here's why it might happen to you.

Brushing with activated charcoal can help remove surface stains and discoloration from the teeth, resulting in a ... to oral health and beyond, the benefits of charcoal are truly surprising ...

Heard the claim that charcoal can light up your grill? No, not that grill, this one. Some companies sell toothpastes, tablets, and other products made with activated ... down your teeth's hard ...