Canker sores are painful, craterlike ulcers that form in the mouth or the inner lips. They usually clear up by themselves in a few weeks.

Things to avoid to prevent canker sores - alchohol,chewing gum, citrus fruits, coffee, dairy products, meat, pineapple, spicey foods, tomatoes, vinegar and other acidic foods.

Herbal alternatives are:

• Myrrh
• Tea
• Cankerroot
• GoldensealLicorice
• Sage
• Wild geranium