Rinse with warm salt water several times a day
Use a baking soda rinse
Avoid spicy, acidic, salty, and rough foods
Avoid very hot foods and drinks
Use a soft-bristled toothbrush
Keep good oral hygiene
Apply an over-the-counter oral ulcer gel or protective paste
Use a topical numbing gel if needed
Drink plenty of water
Avoid alcohol and tobacco
Suck on ice chips or cold foods to reduce pain
Eat soft, bland foods
Avoid biting or irritating the tongue
Manage stress
Check for sharp teeth, braces, or dental appliances causing irritation
See a dentist or doctor if ulcers last more than 2 weeks
Seek medical care if ulcers are large, frequent, or very painful
Get checked if you have fever, trouble swallowing, or weight loss