How to Get Rid of Canker Sores | If you and/or your kids are prone to canker sores, and you're looking for canker sore remedies that work fast, this post is for you! Whether you have a canker sore on your lips, cheeks, gums, tongue, or even in your throat (ouch!), this post has tons of useful tips, including information on what causes canker sores, how to prevent canker sores, and quick home remedies for canker sores for toddlers, older kids, and adults.