Chloraseptic is a minty numbing spray that’s great for sore throats and canker sores.
I used to get canker sores all the time which isually caused by stress. Oddly enough, they only appear after the stress phase is over and I start feeling good again. Two things you can do – gargle/swish warm water with salt in it (yes it stings for a few minutes but it numbs it and recovery time is much quicker). Also, you can get a vitamin called Lysine which helps eliminate the acid in your body causing the sores. One item that does work if you don’t mind “texture” in your mouth is OraBase or OraGel. I used to use OraBase when I had braces that caused tears in my cheeks. This stuff is a gritty paste but smooths over after awhile but adheres to the sore very well and with no stinging effect either.
Hope this helps. All the products I mentioned you can get in a drug store like you would buy Tylenol.