Doctors recommend that you swish a tablespoon or so of Mylanta or milk of magnesia around the site of an ulcer to coat the sore and relieve its irritation. Stir up something new. Swish it around the sore and spit it out. The Benadryl numbs the sore, and the Kaopectate cools it and coats it. Pharmacy shelves hold a number of canker sore medications.
Tincture of benzoin provides a protective layer, and benzocaine is an anesthetic.
Take your E's. Some women find relief using vitamin E as an oral salve. Just open up a vitamin E capsule and squeeze some of the contents onto your canker sore. Gently rub the gel into the sore. The information given here is designed to help you make informed decisions about your health.