Febuxostat

Febuxostat is used to treat gout in adults who were not treated successfully with or who are not able to take allopurinol (Aloprim, Zyloprim). 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.

Febuxostat comes as a tablet to take by mouth. It is usually taken once a day with or without food. Take febuxostat at around the same time every day. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take febuxostat exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.

Your doctor may increase your dose of febuxostat after 2 weeks if a laboratory test shows that you still have too much uric acid in your blood.

It may take several months before febuxostat begins to prevent gout attacks. Febuxostat may increase the number of gout attacks during the first few months of your treatment. Your doctor may prescribe another medication such as colchicine (Colcyrs, Mitigare) or a nonsteroidal anti-inflammatory drug (NSAID) to prevent gout attacks during the first 6 months of your treatment. Continue to take febuxostat even if you have gout attacks during your early treatment.

Febuxostat controls gout but does not cure it. Continue to take febuxostat even if you feel well. Do not stop taking febuxostat without talking to your doctor.

Ask your pharmacist or doctor for a copy of the manufacturer's information for the patient.

This medication may be prescribed for other uses; ask your doctor or pharmacist for more information.

Before taking febuxostat,

• tell your doctor and pharmacist if you are allergic to febuxostat, allopurinol, any other medications, or any of the ingredients in febuxostat tablets. Ask your pharmacist for a list of the ingredients.
• some medications should not be taken with febuxostat. Other medications may cause dosing changes or extra monitoring when taken with febuxostat. Make sure you have discussed any medications you are currently taking or plan to take before starting febuxostat with your doctor and pharmacist. Before starting, stopping, or changing any medications while taking febuxostat, please get the advice of your doctor or pharmacist.
• tell your doctor if you have or have ever had an organ transplant; cancer; Lesch-Nyhan syndrome (an inherited disease that causes high levels of uric acid in the blood, joint pain, and problems with motion and behavior); or kidney or liver disease.
• tell your doctor if you are pregnant, plan to become pregnant, or are breastfeeding. If you become pregnant while taking febuxostat, call your doctor.

Unless your doctor tells you otherwise, continue your normal diet.

Take the missed dose as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one.

Febuxostat may cause side effects. Tell your doctor if either of these symptoms is severe or does not go away:

• nausea
• joint pain

Some side effects can be serious. If you experience any of these symptoms, or those listed in the IMPORTANT WARNING section, call your doctor immediately:

• rash; skin redness or pain; blistering of lips, eyes or mouth; skin peeling; or fever and other flu-like symptoms
• swollen face, lips, mouth, tongue or throat
• yellow eyes or skin; dark urine; or pain or discomfort in right upper stomach area

Febuxostat may cause other side effects. Call your doctor if you have any unusual problems while taking this medication.

If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online (https://www.fda.gov/Safety/MedWatch) or by phone (1-800-332-1088).

Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature, away from light, and away from excess heat and moisture (not in the bathroom).

Keep all medication out of sight and reach of children as many containers are not child-resistant. Always lock safety caps. Place the medication in a safe location – one that is up and away and out of their sight and reach. https://www.upandaway.org

Dispose of unneeded medications in a way so that pets, children, and other people cannot take them. Do not flush this medication down the toilet. Use a medicine take-back program. Talk to your pharmacist about take-back programs in your community. Visit the FDA's Safe Disposal of Medicines website https://goo.gl/c4Rm4p for more information.

In case of overdose, call the poison control helpline at 1-800-222-1222. Information is also available online at https://www.poisonhelp.org/help. If the victim has collapsed, had a seizure, has trouble breathing, or can't be awakened, immediately call emergency services at 911.

Keep all appointments with your doctor and the laboratory. Your doctor will order certain lab tests to check your body's response to febuxostat.

Do not let anyone else take your medication. Ask your pharmacist any questions you have about refilling your prescription.

Keep a written list of all of the prescription and nonprescription (over-the-counter) medicines, vitamins, minerals, and dietary supplements you are taking. Bring this list with you each time you visit a doctor or if you are admitted to the hospital. You should carry the list with you in case of emergencies.