<<Disclaimer: Verify this information before applying it to your situation.>> I just got verbal confirmation with written confirmation to follow that Tums regular strength antacid/calcium supplement tablets are gluten-free. I spoke with Laura in consumer affairs (1-800-245-1040) and it took her 2 days to research it. The company is: SmithKline Beecham Consumer Healthcare, L.P. Pittsburgh, PA 15230 USA The ingredients are: Sucrose, Starch, Talc, Mineral Oil, Flavor, Sodium Polyphosphate. Laura says the starch is corn based and the flavor is NOT grain-alcohol based. They do not test for gluten or label "gluten free" however, so this is one of the many "ingredient-based" gluten free claims, but better than many other manufacturers.