60 of the 400mg tabs can be obtained from inhousepharmacy.vu for just under $100.

It comes under a different generic name (Rcifax), but I confirmed the medication with my GI doctor at Johns Hopkins before purchasing it. I have used it 3 times from this source and works just fine. They don't carry the 550 mg tabs, but I got the same good results with 400 mg.

My SIBO returns 2, maybe, 3 times a year. If I don't treat it right away and let if get bad, then symptoms might return within a week of finishing the antibiotic course...and I have to repeat the course. My doctor says this is normal when the bacterial load is high.

It is also important to avoid refined sugars and carbs...as they will 'feed' the bacteria and slow down your improvement. I also follow a gastroparesis diet to help keep symptoms at bay and SIBO from recurring more frequently.

Hope this helps.