Soothing the Sting: Top 5 Remedies for Mouth Sores
Hydrogen Peroxide

Hydrogen peroxide is a strong antiseptic known for its bacteria-killing properties. It is beneficial in ensuring the oral wound caused by mouth sores remains clean and free from infection.
To harness the healing power of hydrogen peroxide, dilute a 3% solution with equal parts water. Using a cotton swab or cloth, apply the diluted solution to the mouth sore. Allow it to sit for a few seconds before rinsing the mouth with water. This should ideally be done at least once a day.