<<Disclaimer: Verify this information before applying it to your situation.>> Hi Listmates. My doctor told me to try Xantac 75 for the chest and arm pain and sour taste in my mouth. I know we just talked about this medication about a month ago. I have unsuccessfully looked through the archives. Can anyone tell me if it is gluten-free? If you use it does it help your symptoms? Any help would be appreciated. Thanks. Melissa in CT