* Relieves Pain/Shields the Sore * One Patch Fully Treats Most Canker Sores * Lasts 8-12 Hours * Immediate Pain Relief * Total Protection from Food & Drink * Easy, Effective, Freshens Breath * Forms a Clear Gel Patch * With Natural Active Ingredients * Clinically Proven Effective * Fast Treatment * Harnessing the Power of Natural Ingredients Canker Cover adheres to any mouth ulcer and becomes a clear, gel-like patch. One patch fully treats most sores. Uses: For the relief of pain associated with canker sores or minor irritation or injury of the mouth and gums.