<<Disclaimer: Verify this information before applying it to your situation.>> Hi. I had a mild gluten reaction when I added Lundberg Family Farms Brown Rice, Rice Cakes to my diet. Someone had told me they thought they were gluten free. I phoned Lundberg, and they told me that they also make gluten rice cakes with the same machinery--but they thoroughly clean the machinery between runs. Anyone very sensitive to gluten should beware of these. I also had reactions to Quaker Oats Brand Rice Cakes, salted and Apple Cinamon varieties. They also could not promise noncontamination. My symptoms are mild with products that are contaminated, excessive gas with mucos discharge. But I still consider this a reaction, as I do not have this problem unless I ingest gluten products or gluten contaminated products.