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 ...

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 ...

So despite emerging around the same era, why don't toothpaste and OJ get along? An ingredient called sodium lauryl sulfate (or "SLS") is largely to blame. The cleaning agent and surfactant causes ...

for me, nothing works. canker sores are completely random. i've done the vitamin c, the lysine, the non-SLS toothpaste, and it makes no fuggin difference.