does xifaxan cause diarrhea
1 If you take antibiotics, like XIFAXAN, there is a chance you could experience diarrhea caused by an overgrowth of bacteria (C. 2  difficile) . 3  This can cause symptoms ranging in severity from mild diarrhea to life-threatening colitis. 4  Contact your healthcare provider if your diarrhea does not improve or worsens.