<<Disclaimer: Verify this information before applying it to your situation.>> Hi all! Today I responded to a message asking for info on gf status of carbamazepine and tylenol. I contacted Mcneil pharmaceuticals (makers of Tylenol products) and was informed all starch in McNeil products comes from corn. Their number is 1-800-962-5357. She seemed very knowledgeable and checked to make sure there was no maltodextran the regular and extra-strength tylenol caplets, so they should be safe for everybody. Vence Brett at the Ciba company told me that all of their tablets were gluten free, but couldn't guarentee chewable or liquid forms that number is 1-908-277-5000. I then talked to Claire at the Lemmon company who manufactures and labels numerous generics and she said all of their products are gluten free and use only cornstarch. Their number is 1-215-256-8400. Hope this helps. Cindy in Texas