Topical anesthetics made with lidocaine or benzocaine, such as Orajel Mouth Sore Gel, dull the pain of a canker sore. They typically come in a gel or cream formula. You can apply them to canker ...

Canker sores are “open sores in the mouth,” says ... Benzocaine gel: A gel containing benzocaine, like medicated Orajel, will decrease inflammation, help with pain, and provide a protective ...