I had luck in mitigating my symptoms by (In consultation with my gastrologist) by first dumping all bacteria in my gut with an antibiotic then re-introducing new bacteria with a probiotic VSL#3 (Over the counter - slightly expensive $70 for 60 pills - not on shelf as it has to be refrigerated so ask the pharmacist.) Took one pill in afternoon and a second at night and after two weeks - great improvement. Cut down to one pill a day after that. Did not cure but improved GI symptoms dramatically.