6 doctors weighed in:
How can I stop a canker sore before it grows bigger?
6 doctors weighed in

Dr. Michael P Vaughn
Internal Medicine - Allergy & Immunology
3 doctors agree
In brief: Cautery for cankers
Cautery can stop canker sore growth.
Topically applied debacterol is one such product used to achieve this.

In brief: Cautery for cankers
Cautery can stop canker sore growth.
Topically applied debacterol is one such product used to achieve this.
Dr. Michael P Vaughn
Dr. Michael P Vaughn
Thank
Dr. Pamela Pappas
Psychiatry
1 doctor agrees
In brief: 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. http://tinyurl.com/kr9aeau sucking on dgl lozenges may work also. Other studies showed positive results with a dissolving licorice disk placed on the sore. http://tinyurl.com/mdvde3o.

In brief: 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. http://tinyurl.com/kr9aeau sucking on dgl lozenges may work also. Other studies showed positive results with a dissolving licorice disk placed on the sore. http://tinyurl.com/mdvde3o.
Dr. Pamela Pappas
Dr. Pamela Pappas
Thank
1 comment
Dr. Russell Chin
You can also use Oxygel which has aloe Vera because it's thick enough to last few hours for protection from irritants and reduces inflammation. Can see dr for silver nitrate and that will get rid of it immediately.
Get help from a real doctor now
Dr. Cindy Juster
Board Certified, Pediatrics
32 years in practice
2M people helped
Continue
108,000 doctors available
Read more answers from doctors