Sarah wrote:
It's mainly that seitan kills my stomach.*
Mine, too, although I can tolerate small amounts of it. I found out when I started making my own seitan from scratch and eating it every day. Stomachaches and headaches. I also have trouble with the seitan Primal Strips, and beer (although that might not be from the gluten). Breads, pastas, cereals, etc. are usually fine.