Samantha offers good advice. Give the manufacturer of Xifaxan a call; I believe it is Salix Pharmaceuticals, but you can double check by looking at your prescription bottle. I believe they have a patient assistance program that can help people who cannot afford medication when their insurance doesn't cover it. I think you have to have less than $50,000 in assets to qualify. It's certainly worth investigating if the drug has given you so much benefit.