Rinse with warm salt water several times before bed
Rinse with a baking soda solution before bed
Apply a small amount of milk of magnesia directly to the sore
Dab on a topical canker sore gel or ointment
Use an oral numbing gel with benzocaine if needed
Avoid spicy, acidic, salty, and crunchy foods
Avoid alcohol-based mouthwash
Brush gently with a soft-bristled toothbrush
Stay hydrated
Suck on ice chips briefly to reduce pain and swelling
Take an over-the-counter pain reliever if safe for you
Avoid touching or picking at the sore
Use a protective oral paste before sleep
See a dentist or doctor if sores are severe, frequent, or last more than 2 weeks