<<Disclaimer: Verify this information before applying it to your situation.>> I was able to contact the Pepsi Cola Co. today and the representative told me that ALL Pepsi beverages are Gluten Free. This includes Sierra Mist, the new, clear, lemon-lime soda available since Sept. 2000. So there it is. Must be some of the chemical additives that got to me: ascorbic acid, potassium benzoate (preservative)potassium citrate and calcium disodium EDTA (protects flavor). They're different than the ingredients in 7-UP, which agrees with me. I have Type O blood, so I probably shouldn't be ingesting those things, anyway. So, for those of you who are more evolved than I, drink up. R.J. in Spokane