Rifamycin is used to treat diarrhea caused by the common bacteria known as E. coli ("traveler's diarrhea"). It works by stopping the growth of bacteria.
This antibiotic treats only bacterial infections. It will not work for viral infections (such as common cold, flu). Using any antibiotic when it is not needed can cause it to not work for future infections.
This medication should not be used if you have a fever or bloody diarrhea.
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