Rinse with warm salt water several times a day
Use an over-the-counter oral pain reliever as directed on the label
Apply an oral numbing gel or protective oral sore gel if appropriate
Avoid spicy, acidic, salty, or rough foods
Drink cool fluids and stay hydrated
Use a soft toothbrush and gentle mouth care
Avoid picking, biting, or irritating the sore
Rest and reduce stress
Wash hands often and avoid sharing utensils, cups, or lip products
See a dentist or doctor if the sore is severe, lasts more than 2 weeks, keeps coming back, or you have fever, trouble swallowing, or a weakened immune system