<<Disclaimer: Verify this information before applying it to your situation.>> After I read about corn starch and wheat starch in paper, I became concerned about the coffee I've been drinking since I've still been noticing some symptoms. So I called Mr Coffee and they were nice enough to check with the manufacturer and were able to reassure me that there are no glutens used in their coffee filters! Since then I've found out that my symptoms are probably caused from eating vanilla yogurt and pudding. I think this was making me sensitive to coffee. Suzanne