German chamomile, lady's mantle, vitamin B-12 and deglycyrrhizinated licorice are natural herbs and supplements that can be used to treat oral canker sores, states About.com. It is suggested to see a doctor if the sores are reoccurring.Continue Reading
Chamomile is used for relieving the pain of canker sores. This herb has been used for thousands of years to treat conditions such as sore throat, gingivitis and eczema, says About.com. People who take sedatives or blood-thinning medications should consult a doctor first, as chamomile can interact negatively with some such drugs.
In one study, 75 percent of patients reported pain relief after applying a gel containing lady's mantle three times a day for three days. Lady's mantle has also been used as a folk herb for treating mouth and throat infections, explains About.com.
Reoccurring oral canker sores are sometimes a symptom of vitamin B-12 deficiency. This vitamin is important for maintaining nerve cells, producing DNA and RNA, and forming red blood cells. One form of the licorice herb, DGL, was used in a small study for the treatment of canker sores, reports About.com. Patients used a mouthwash comprised of water and powdered DGL. On the third day of the study, 75-percent of the patients' canker sores were completely healed.Learn more about Nutrition & Diets