I use a cooking spice called Alum on my canker sores and it helps heal them really fast and takes away the pain. It tastes awful and you must let it sit for a min to absorb but it really does help.
Replied By Michael (Oklahoma City, Oklahoma) on 05/11/2010
My grandmother used to apply alum to our canker sores when we were kids. She kept a bottle in her night stand next to her 38. The alum hurt like the dickens, but it always seemed to work. We never knew if the 38 was plan B, or just in case the pain from the alum was too much to bear.
