<<Disclaimer: Verify this information before applying it to your situation.>> Thank you -- the Ery-Tabs erythromycin tablets from Abbott do contain gluten, according to a poster who contacted Abbott re. this. Amoxicillin and Zithromax do not. (My son is allergic to penicillin and sulfa ::sigh::). A couple others mentioned that erythromycin gave them horrible stomach aches-- perhaps this is why. What about suspensions/ liquid formulations? From what I'm gathering, it's possible for a tablet to contain gluten, but the liquid formulation (usu. for children) isn't. Any info. there? And, BTW, my son is feeling much better today, except for being sore from throwing up. Later, Pam "courage. . .is when you know you're licked before you begin but you begin anyway and you see it through no matter what." <Atticus Finch>