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Bacterial Overgrowth (SIBO)

Hello Everyone,

I was diagnosed with bacterial overgrowth a few days ago and my doctor prescribed Xifaxan 550 mg 3 times a day for 10 days. A pharmacists told me that this dose is higher than the allowed limit for this medication and that it could give me really bad side effects. Has anyone else here been prescribed such a high dose of Xifaxan for SIBO? Did it help? Were the side effects really bad? Thank you in advance.
2 Responses
Avatar universal
MEDICAL PROFESSIONAL
Hi, XIFAXAN can be taken as 200 mg or 550 mgs three times a day. The recommended dose of XIFAXAN is one 550 mg tablet taken orally two times a day, with or without food. Studies show that rifaximin eradicates bowel overgrowth syndrome in as many as 80% of patients. Higher doses (1200 or 1600 mg/d) are found to be more effective, hence your doctor has prescribed that does, please follow up with him. Regards.  
Avatar universal
Thank you so much for responding.
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