<<Disclaimer: Verify this information before applying it to your situation.>> A big, wonderful, thank you to all that responded. My goodness, I certainly learned a lesson in Buckwheat. Even though we still don't know the precise reason my daughter reacted, I'm glad to know what I now know. Basically, there were about 3 different possibilities given: 1) an allergic reaction to buckwheat; 2) cross contamination; or 3)she had a stomach virus. It's amazing how so many from this group cannot tolerate buckwheat. Some recommended trying Kasha-a form of buckwheat. Hmm, dare I ask another question- If it ends up she is allergic to buckwheat flour, will she also be allergic to Kasha? I guess I'm thinking that people are recommending Kasha because it is less likely to have cross contamination from crop rotation(some said that buckwheat is planted in the same fields as wheat on a rotating yearly basis.). Another fact that I learned is that buckwheat is high in fiber, which can be upsetting to your stomach. Again thanks so much for your words of encouragement and your wealth of knowledge. Juli