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 ...

DEAR PEOPLE’S PHARMACY: My father and I have both suffered with canker sores all our lives. I’ve heard of eating kiwi fruit to speed healing, and in a recent column, you wrote about sauerkraut. A few ...

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 ...

While you can't go wrong with most toothpastes, these particular kinds of toothpaste do more harm than good and should be avoided.

Q. My father and I have both suffered with canker sores all our lives. I’ve heard of eating kiwi fruit to speed healing, and in a recent column, you wrote about sauerkraut. A few years ago, a dental ...