Usual Adult Dose for Traveler's Diarrhea:
200 mg orally 3 times a day for 3 days
Comments:
-Should not use in patients with diarrhea complicated by fever and/or blood in the stool or diarrhea caused by pathogens other than Escherichia coli
Use: For the treatment of travelers' diarrhea due to noninvasive strains of E coli
Usual Adult Dose for Hepatic Encephalopathy:
550 mg orally twice a day
Comments:
-In trials, lactulose was used concomitantly in 91% of patients; differences in treatment effect of patients not using concomitant lactulose could not be assessed.
Use: For reduction in risk of overt hepatic encephalopathy recurrence
Usual Adult Dose for Irritable Bowel Syndrome:
550 mg orally 3 times a day for 14 days
Comments:
-If symptoms recur, patients can be retreated up to 2 times with the same dose regimen.
Use: For the treatment of irritable bowel syndrome with diarrhea
Usual Pediatric Dose for Traveler's Diarrhea:
12 years or older: 200 mg orally 3 times a day for 3 days
Comments:
-Should not use in patients with diarrhea complicated by fever and/or blood in the stool or diarrhea caused by pathogens other than E coli
Use: For the treatment of travelers' diarrhea due to noninvasive strains of E coli
 Detailed Xifaxan dosage information
What happens if I miss a dose?
Take the medicine as soon as you can, but skip the missed dose if it is almost time for your next dose. Do not take two doses at one time.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.
