To diagnose small intestinal bacterial overgrowth (SIBO), ask your doctor to do a hydrogen breath test (HBT) to look for SIBO as well as lactose or fructose intolerance. (Each of these tests will need to be done on different days.) If you have SIBO, a special antibiotic called Rifaximin (400 mg three times a day for seven to ten days) can markedly improve spastic colon symptoms for months. This antibiotic is not absorbed into the body and stays in the gut, making it useful for bowel infections. Unfortunately, it is also expensive ($300 for seven to ten days). An older but cheaper nonabsorbable antibiotic called Neomycin may work just as well. It can be made by compounding pharmacies or purchased by prescription from Costco (less than $50 for a ten-day supply). Take 500 mg three times a day for seven to ten days.
To diagnose small intestinal bacterial overgrowth (SIBO), ask your
doctor to do a hydrogen breath test (HBT) to look for SIBO as well
as lactose or fructose intolerance. (Each of these tests will need
to be done on different days.) If you...
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