What side effects may I notice from receiving Febuxostat?

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
-breathing problems
-chest pain or chest tightness
-fast, irregular heartbeat
-feeling faint or lightheaded
-rash, fever, and swollen lymph nodes
-redness, blistering, peeling, or loosening of the skin, including inside the mouth
-signs and symptoms of liver injury like dark yellow or brown urine; general ill feeling or flu-like symptoms; light-colored stools; loss of appetite; nausea; right upper belly pain; unusually weak or tired; yellowing of the eyes or skin
-signs and symptoms of a stroke like changes in vision; confusion; trouble speaking or understanding; severe headaches; sudden numbness or weakness of the face, arm or leg; trouble walking; dizziness; loss of balance or coordination

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

-changes in appetite
-joint pain
-nausea, vomiting
-upset stomach

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