Mouth ulcers can be uncomfortable. They look similar small blisters and can be caused by a tooth rubbing, a lack of vitamin B12, anemia or even stress and many other causes. Ulcers will usually heal within 7 days. If they last longer, you should come and see us as they may be an early indication of something more serious.
If you have a mouth ulcer, you can help clear them up by using a special antiseptic mouthwash or with special pastilles. These are available from most chemists and pharmacies – just ask the pharmacist for advice.
Having a healthy diet can help prevent mouth ulcers and ensure you keep in good health generally. Remember to eat five portions of fruit and vegetables a day.