Rinse your mouth with warm salt water 3–4 times a day
Avoid spicy, acidic, salty, and hard foods
Drink plenty of water
Use a soft-bristled toothbrush
Avoid alcohol-based mouthwash
Apply a topical oral gel or ointment for pain relief
Take over-the-counter pain relievers if needed
Eat soft, bland foods
Avoid biting or irritating the ulcer
Reduce stress
Get enough sleep
Maintain good oral hygiene
Avoid smoking and tobacco
Check for sharp teeth, braces, or dentures causing irritation
See a doctor or dentist if the ulcer lasts more than 2 weeks
Seek medical help if ulcers are frequent, severe, or accompanied by fever or weight loss