Canker sores are vexing and common. The reason they occur isn’t clear, but your toothpaste could be a factor. An ingredient often used to make toothpaste foamy, sodium lauryl sulfate (SLS), has been ...

Medically reviewed by William Truswell, MD Strong concentrations of SLS can cause skin, mouth, or eye irritation.SLS may increase the likelihood of canker sores in people who are prone to them.High ...

Dear Dr. Reitz: My 22-year-old daughter frequently gets oral ulcers. The ulcers, also called canker sores, occur in different areas of her mouth, last for about 10 days then are gone for a few months ...

ST. LOUIS — Many of us brush our teeth twice a day, but do we really know what’s in toothpaste? Consumer Reports reveals the toothpaste ingredients to look out for. If you have an older tube of ...