jojo - Thank you for your quick response. I was tested for gluten and I do not have celiac or a gluten intolerance. I can give it a try. Gluten free bread is awful and grainy (yuck) and I always have a sandwich for lunch. I don't know how to make a sandwich any other way. I was hoping the Xifaxan and Neomycin combo would do the trick. I'm only on day 4 out of 14 days on that.