I found out I was gluten, soy, corn, and beet intolerant last summer. Quite a blow to the diet! My recovery has taken so long that I checked back with the doctor and found I've had candida as well. The symptoms are all so similar between soy, beets, and phosphorus rich foods (common nongluten grains, seeds, most nuts) that I get confused about the cause of a reaction! Now candida too... However, corn is the only one that gives me bronchial drainage and a cough for several hours. Most restaurants use corn products when they try to replace gluten for us! A nice effort, but given that about 50% of us who are gluten free also cannot handle corn, I suggest asking the source of the gluten free product anywhere! It may prevent a reaction!