What side effects may I notice from receiving Xeljanz?

Side effects that you should report to your doctor or health care professional as soon as possible:

-allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
-blood clot (chest pain; shortness of breath; pain, swelling, or warmth in the leg)
-dizziness
-infection (fever, chills, cough, sore throat, pain or trouble passing urine)
-liver injury (dark yellow or brown urine; general ill feeling or flu-like symptoms; loss of appetite, right upper belly pain; unusually weak or tired, yellowing of the eyes or skin)
-low red blood cell counts (trouble breathing; feeling faint; lightheaded, falls; unusually weak or tired)
-tears in the stomach or intestines (fever; stomach pain; sudden change in bowel habits)
Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

-diarrhea
-headache
-muscle pain
-runny nose

This list may not describe all possible side effects for Xeljanz. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.