I bought this product under the assumption that Gluten Free means free of any gluten ingredient in processing. Well---they do test the product and according to FDA guidelines, it is less than 20ppm. But that does not mean it is safe for those with Celiac Disease, as we cannot tolerate ANY gluten or ingredient derived from a gluten source. Nutribiotic is using barley enzymes in their rice protein production, clarifying that there is no barley protein left over in the final product. I beg to differ---my husband and I have been taking this product every day to improve our health and have been feeling horrible. I have no respect for companies that lie to improve their bottom line. And a Government agency has no right to declare that just a LITTLE poison every day is safe for a Celiac!