<<Disclaimer: Verify this information before applying it to your situation.>> Dear Listmembers, I just got off the phone from speaking to the rep. at the Mc Cormick company concerning their spices. She assurred me that all ingredients are listed on the label. I told her that I understood that some companies put in wheat flour for anti-caking and she said again that whatever is stated on the label is what is in the spices, and spice mixtures, nothing more is added. I asked specifically about the poultry seasoning and the pumpkin pie seasoning and she looked up the ingredients and they contain no wheat or anything else except spices. So, check the labels. As for any other spice companies, I have no idea whether or not this applies to them. Their toll free number is 1-800-632-5847. Happy Holidays! Karen from NY