Aside from a proper diet, there are some things you can do to ease the pain of canker sores until they fade away. For an at-home remedy, put a damp tea bag on the canker sore for five minutes. Tea is alkaline and neutralizes acids. It also contains astringent compounds which can help relieve the pain.
Did you know the difference between a canker sore and a cold sore? Canker sores are tiny lesions on the gums while cold sores only affect the lips. There are many different kinds, causes, and treatments, so take a look at the article above for everything you ever wanted to know.