<<Disclaimer: Verify this information before applying it to your situation.>> My wife and mother -in-law have Celiac Disease. They both expierence mouth sores even though they are on gluten free diet. They are taking natural vitamins that have an ingredient called Glutamic Acid. Does anyone know if this contains gluten. We are new members of the Celiac list and are very pleased with the information that is here. Marvin Haines