I was put on every recommended antibiotic too. After almost two years later I am on rifaximin which we all know is very expensive. I had some ok results from that but continued to struggle until I found a physician paper on recommended treatment. For people with both hydrogen and methane gas stubborn sibo, they recommended 1600 mgs of xifaxan/ rifaximin a day for 12 weeks in combination with 750 mgs of metronidazole for two weeks. I’ve stayed on the rifaximin for a few months. My gi doc recommended ordering it from Canadaprescriptionsplus.com.
Because I can get 90 days for about $240. It takes a few weeks to get here but the cost savings is worth it. Don’t give up! I’m not 100% but I am better.