Can mouth ulcers be prevented?

It may not be possible to prevent mouth ulcers, because they're often caused by things you can't control (such as a family history or a medical condition).

However, the following may help to reduce your risk of developing mouth ulcers:

  • avoiding certain foods such as chocolate, spicy foods, coffee, peanuts, almonds, strawberries, cheese, tomatoes and wheat flour, if they cause you to have an ulcer
  • not chewing gum
  • brushing your teeth with a soft-bristled brush, which may reduce irritation in your mouth
  • using toothpaste that doesnt contain sodium lauryl sulphate
  • reducing stress and anxiety which may be a trigger for some people


Content supplied by the NHS Website

Medically Reviewed by a doctor on 21 Dec 2018