Prevention of mouth ulcers includes:
- Stop smoking.
- Avoid exposure to secondary smoke.
- Avoid alcohol, or drink alcohol in moderation:
- For men: no more than 2 alcoholic beverages per day
- For women: no more than 1 alcoholic beverage per day
- Avoid caffeine.
- Avoid drinking hot liquids.
- Take a vitamin B supplement.
- Take a vitamin C supplement.
- Maintain good oral hygiene:
- Brush your teeth after meals and at bedtime.
- Floss your teeth every day.
- Gargle with dilute saltwater three times per day.
- See your dentist every 6 months.