Common side effects of Febuxostat are abnormal liver function, nausea, arthralgia, and rash. Febuxostat is indicated for the long-term treatment of hyperuricemia with symptoms of gout and is not recommended for hyperuricemia without clinical symptoms. The most common incidence of side effects greater than 1% with this drug is abnormal liver function (4.6%), followed in descending order by nausea (1.3%), arthralgia (1.1%), and rash (0.5%). Occasional/rarely occurring side effects are hematologic (idiopathic thrombocytopenic purpura, neutropenia, etc.), cardiac (angina pectoris, atrial fibrillation, palpitations, etc.), ear/eye (tinnitus, blurred vision), gastrointestinal (abdominal pain and bloating, dyspepsia, dry mouth, ulcers, vomiting, etc.), allergy, fatigue weakness, and abnormal sensations. The drug is contraindicated in people with a history of allergy and those who are taking mercaptopurine or azathioprine, cholestyramine. Specific medication and adverse reactions should consult a clinician and use the drug under the guidance of a physician, not self-medication to avoid adverse consequences.