FDA Approves Salix Pharms's Xifaxan

Xifaxan (rifaximin) is an antibiotic that fights bacterial infection only in the intestines.

Xifaxan is used to treat travelers' diarrhea caused by E. coli in adults and children who are at least 12 years old. Most people get this infection by eating food or drinking fluids that have been contaminated with the bacteria.

Xifaxan is also used to lower the risk of worsened brain function, or hepatic encephalopathy, in adults with liver failure. Brain function can be affected when the liver stops working and cannot remove toxic substances from the body.

This medication is used to treat diarrhea caused by the common bacteria known as E. coli ("traveler's diarrhea"). Rifaximin should not be used if you have a fever or bloody diarrhea. This medication stays in the digestive system and is not absorbed into the blood. It works by stopping the growth of bacteria.

This antibiotic treats only bacterial infections. It will not work for viral infections (e.g., common cold, flu). Unnecessary use or overuse of any antibiotic can lead to its decreased effectiveness.

Rifaximin is also used to prevent a brain problem caused by liver disease (hepatic encephalopathy). It may help to improve mental status.

Rifaximin is an antibiotic that fights bacterial infection only in the intestines. It is used to treat travelers' diarrhea caused by E. coli. Most people get this infection by eating food or drinking fluids that have been contaminated with the bacteria.

Rifaximin works differently from other antibiotics because it passes through your stomach and into your intestines without being absorbed into your blood stream. Because rifaximin treats only the intestinal tract, it will not treat infections of other parts of the body.