Side effects of Febuxostat

Febuxostat (INN; trade names Adenuric [Europe], Febutaz [India] and Takeda's Uloric [United States]) is a urate lowering drug, an inhibitor of xanthine oxidase that is indicated for use in the treatment of hyperuricemia and chronic gout.

Febuxostat received marketing approval by the European Medicines Agency on April 21, 2008 and was approved by the U.S. Food and Drug Administration on February 16, 2009. A study comparing febuxostat to allopurinol found that more individuals treated with febuxostat had decreased levels of uric acid, but there was no difference in the amount of initial gout flares or the surface area of gout tophi. The CAS NO of Febuxostat is 144060-53-7.

Febuxostat is used to treat gout. Gout is a type of arthritis in which uric acid, a naturally occurring substance in the body, builds up in the joints and causes sudden attacks of redness, swelling, pain, and heat in one or more joints. Febuxostat is in a class of medications called xanthine oxidase inhibitors. It works by decreasing the amount of uric acid that is made in the body. Febuxostat is used to prevent gout attacks, but not to treat them once they occur.

Nausea may occur. If this effect persists or worsens, tell your doctor or pharmacist promptly.

Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Febuxostat may rarely cause serious (possibly fatal) liver disease. It may also cause an increase in liver enzymes. Your doctor will order blood tests to measure these enzymes. Keep all medical/lab appointments. Tell your doctor immediately if you develop symptoms of liver disease, including persistent nausea, stomach/abdominal pain, dark urine, yellowing eyes/skin.

Tell your doctor immediately if any of these rare but very serious side effects occur: chest pain/pressure, sudden tiredness, weakness, jaw/left arm pain, weakness on one side of the body, slurred speech, sudden vision changes, confusion, pink/bloody urine, painful urination.

Febuxostat may cause a rash that could be a sign of a severe reaction. Therefore, tell your doctor immediately if you develop any rash.

A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

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