what other treatments have you tried besides anti-biotics? If it was a battle to get your doctor to prescribe the flagyl in the first place, that would indicate to me at least that he/she's reluctant to try it because possibly he doesn't think it would work?The one thing I've taken that seems to have helped me a lot is Levsin... if you haven't tried it yet, you might try asking your doctor if he/she thinks it might help you. Also, Immodium advanced is supposed to help for both D and gas, and seems to work well for me in conjunction with levsin...But, just because something worked for me or someone else, doesn't mean that it will work for you as well... so try not to lose hope if what you try doesn't work... sometimes it takes a few misses before you find something that works.