RIFAXIMIN (ri FAX i men) treats diarrhea caused by bacteria. It may also be used to treat irritable bowel syndrome (IBS) with diarrhea. It can be used to prevent hepatic encephalopathy, a condition where the liver does not clear toxins from the body. It works by killing or preventing the growth of bacteria in your intestines that make toxins. It belongs to a group of medications called antibiotics. It will not treat colds, the flu, or infections caused by viruses.

There is no lifestyle interaction information available for this medication.