Rinse with warm salt water 3–4 times daily
Rinse with baking soda solution 2–3 times daily
Apply ice chips or cold compress to reduce pain
Use an over-the-counter oral ulcer gel or numbing gel
Avoid spicy, acidic, salty, and rough foods
Avoid alcohol-based mouthwash
Brush gently with a soft-bristled toothbrush
Stay hydrated
Use a straw for acidic drinks
Take over-the-counter pain relief if needed and safe for you
Eat soft, cool foods
Avoid biting or irritating the ulcer
Use honey on the ulcer if tolerated
Use a prescribed steroid mouth paste if recommended by a doctor or dentist
See a doctor or dentist if it lasts more than 2 weeks, is very large, or keeps coming back