For the prevention of hepatic encephalopathy, the recommended adult dose of rifaximin is 550 mg taken 2 times a day.
For the treatment of irritable bowel syndrome with diarrhea, the recommended adult dosage is one tablet taken 3 times a day.
Rifaximin should be taken on an empty stomach. Tablets should be swallowed whole with water. Do not crush or chew rifaximin tablets.
Many things can affect the dose of medication that a person needs, such as body weight, other medical conditions, and other medications. If your doctor has recommended a dose different from the ones listed here, do not change the way that you are taking the medication without consulting your doctor.
It is important that Zaxine be taken exactly as prescribed by your doctor. If you miss a dose, take it as soon as possible and continue with your regular schedule. If it is almost time for your next dose, skip the missed dose and continue with your regular dosing schedule. Do not take a double dose to make up for a missed one. If you are not sure what to do after missing a dose, contact your doctor or pharmacist for advice.
Store Zaxine at room temperature, protect it from light and moisture, and keep it out of the reach of children.
Do not dispose of medications in wastewater (e.g. down the sink or in the toilet) or in household garbage. Ask your pharmacist how to dispose of medications that are no longer needed or have expired.