Febuxostat
Febuxostat, sold under the brand names Uloric among others, is a medication used long-term to treat gout due to high uric acid levels. It is generally recommended only for people who cannot take allopurinol. When initially started, medications such as NSAIDs are often recommended to prevent gout flares. It is taken by mouth.
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Trade names | Uloric, Adenuric, others |
AHFS/Drugs.com | Monograph |
MedlinePlus | a609020 |
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Routes of administration | By mouth |
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Bioavailability | ≥84% absorbed |
Protein binding | 99.2% to albumin |
Metabolism | via CYP1A1, 1A2, 2C8, 2C9, UGT1A1, 1A8, 1A9 |
Elimination half-life | ~5–8 hours |
Excretion | Urine (~49%, mostly as metabolites, 3% as unchanged drug); feces (~45%, mostly as metabolites, 12% as unchanged drug) |
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ECHA InfoCard | 100.207.329 |
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Formula | C16H16N2O3S |
Molar mass | 316.38 g·mol−1 |
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Common side effects include liver problems, nausea, joint pain, and a rash. Serious side effects include an increased risk of death as compared with allopurinol, Stevens–Johnson syndrome, and anaphylaxis. Use is not recommended during pregnancy or breastfeeding. It inhibits xanthine oxidase, thus reducing production of uric acid in the body.
Febuxostat was approved for medical use in the European Union in 2008, and in the United States in 2009. A generic version was approved in 2019.