I was very surprised to read the following in the link below: Medications and Gluten | FDA What types of ingredients that may contain gluten are in oral drug products? The majority of oral drug products either contain no gluten or virtually no gluten. Based on information available to the Agency, we are aware of no oral drug products currently marketed in the United States that contain wheat gluten or wheat flour intentionally added as an inactive ingredient. We would expect any such product, if it existed, to include wheat gluten or wheat flour in the list of ingredients in its labeling. FDA has identified very few oral drugs that contain wheat starch as an ingredient. Starch can also be used...