About rifaximin
Rifamycin antibiotic
Used for
- Traveler’s diarrhea caused by certain E. coli strains
- Irritable bowel syndrome with diarrhea in adults
- Prevention of recurrent hepatic encephalopathy in adults
Usual adult dose
Traveler’s diarrhea: 200 mg three times daily for 3 days. IBS with diarrhea: 550 mg three times daily for 14 days. Hepatic encephalopathy: 550 mg twice daily.
Common side effects
- Nausea
- Headache
- Abdominal pain
- Dizziness
Important warnings
- Not suitable for diarrhea with fever or blood in stools.
- Seek medical attention if diarrhea worsens or persists after treatment.
- May cause severe allergic reactions or Clostridioides difficile-associated diarrhea.
- Use caution with severe liver impairment.
Pregnancy
Human pregnancy data are limited; use only when clearly needed after medical assessment.
Breastfeeding
It is unknown whether rifaximin enters breast milk; discuss risks with a healthcare professional.
Interactions
- Cyclosporine may increase rifaximin exposure.
- Warfarin effects may change; monitoring may be needed.
- Other strong P-glycoprotein inhibitors may increase exposure, especially with liver impairment.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.