Need help getting rid of a canker sore?

Laser treatment: It will work better before it becomes a blister, however it will reduce the healing time.

Old remedy: Yogurt has lactobaccillus and usually eats up the internal oral cold sores. I f the sores are on the lips, abreva, is an over the counter aid. Use it during the prodrome when you get itching or burning and this meds lessen the problem.