What Is A Canker Sore? Have you ever had a sore in your mouth that hurt pretty bad? Did it take forever to go away? You probably had a canker sore. So just what is a canker sore? Canker sores (a… Natural Health Remedies, Natural Cures, Natural Healing, Herbal Remedies, Natural Oil, Home Health, Health And Wellness, Oral Health, Health And Beauty Tips