Hi Thank you for reaching out to the community about your question.I am not sure if you've made a decision yet to try Xifaxan? Many people that suffer from IBS-D and SIBO can find Xifaxan to be helpful. I, personally, required two rounds of the treatment to do anything. This medication can be extremely expensive if not covered by your insurance. My recommendation would be to communicate with your healthcare provider (gastroenterologist) and request they get you samples. If it wasn't for my doctors securing samples for me, I would have not been able to try this medication. As with any medication or treatment plan, it is always best to speak with your physician about options. Best of luck to you, and let us know if we can offer additional support.
-Marci, IrritableBowelSyndrome.net Team