"Buckwheat has no relation to wheat, which makes it a safe alternative for anyone avoiding the gluten grains. In fact, like quinoa, buckwheat isn't even a grain- it's a seed related to rhubarb and sorrel. The health benefits of buckwheat are truly staggering: It's a rich source of fiber, magnesium, all eight essential amino acids, and even protein. Buckwheat also contains an antioxidant called rutin, a flavonoid that can lower the risk of developing high cholesterol and high blood pressure, as well as chiro-inositol, which drives carbohydrates into your muscles without raising insulin levels. As always...check that it hasn't been grown and processed near wheat".
This information was taken from a book that I have on Gluten Free. I'm not sure if the title can be mentioned, so for now I will leave it at that...unknown. I am new for this site and I'm not sure what can be mentioned or not. I wish that these informative items could be mentioned as to it could give aid to others. Hope this information has helped.
I personally do use Buckwheat, and have not had any problems.