Canker sore help me in so much pain!?

Licorice. Licorice has been used since ancient times to treat canker sores in the mouth. Also, small studies show it can be effective when used as a mouthwash -- 50-75% improvement in 1 day. sucking on dgl lozenges may work also. Other studies showed positive results with a dissolving licorice disk placed on the sore.