Xifaxan Dosage

Generic name: RIFAXIMIN 200mg
Dosage form: tablet
Drug class: Miscellaneous antibiotics

Medically reviewed by Drugs.com. Last updated on Jun 25, 2025.

Dosage for Travelers’ Diarrhea

The recommended dosage of XIFAXAN is 200 mg taken orally three times a day for 3 days.

Dosage for Hepatic Encephalopathy

The recommended dosage of XIFAXAN is 550 mg taken orally two times a day.

Dosage for Irritable Bowel Syndrome with Diarrhea

The recommended dosage of XIFAXAN is 550 mg taken orally three times a day for 14 days. Patients who experience a recurrence of symptoms can be retreated up to two times with the same dosage regimen.

Administration

XIFAXAN can be taken with or without food.

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Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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Drug Status

Availability Prescription only Rx

Pregnancy & Lactation Risk data available

CSA Schedule* Not a controlled drug N/A

Approval History Drug history at FDA

User Reviews & Ratings

6.6 / 10

97 Reviews

Images

Pill rfx is Xifaxan 550 mg — Xifaxan 550 mg (rfx)

Xifaxan Dosage

Dosage for Travelers’ Diarrhea

Dosage for Hepatic Encephalopathy

Dosage for Irritable Bowel Syndrome with Diarrhea

Administration

More about Xifaxan (rifaximin)

Patient resources

Professional resources

Related treatment guides

See also:

Constulose

Enulose

Ozempic

Duphalac

Kristalose

Generlac

Neomycin

Lactulose

Further information

Xifaxan Dosage

Dosage for Travelers’ Diarrhea

Dosage for Hepatic Encephalopathy

Dosage for Irritable Bowel Syndrome with Diarrhea

Administration

Does Xifaxan interact with my other drugs?

More about Xifaxan (rifaximin)

Patient resources

Professional resources

Related treatment guides

See also:

Further information