Get emergency medical help if you have signs of an allergic reaction to Xifaxan: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have:
severe stomach pain, diarrhea that is watery or bloody (even if it occurs months after your last dose);
fever; or
fluid build-up around the stomach - rapid weight gain, stomach pain and bloating, trouble breathing while lying down.
Common Xifaxan side effects may include:
swelling in your hands or feet;
nausea;
headache, dizziness;
tiredness; or
abnormal liver function tests.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Xifaxan side effects (more detail)
