Flutamide may cause liver damage that can be serious or life-threatening. Tell your doctor if you have or have ever had liver disease. If you experience any of the following symptoms, call your doctor immediately: nausea, vomiting, loss of appetite, extreme tiredness, flu-like symptoms, muscle aches, soreness, pain in the upper right part of the stomach, yellowing of the skin or eyes, or dark urine.
Keep all appointments with your doctor and the laboratory. Your doctor will order certain blood tests to check how well your liver is working before you begin taking flutamide, every month for the first 4 months of your treatment, and periodically for as long as your treatment continues.
Talk to your doctor about the risks of taking flutamide.
Flutamide is used together with a luteinizing hormone-releasing hormone agonist (LHRH; a type of hormonal injection such as leuprolide [Lupron, Eligard], goserelin [Zoladex], or triptorelin [Trelstar]) to treat certain types of prostate cancer. Flutamide is in a class of medications called nonsteroidal antiandrogens. It works by blocking the effects of androgen (a male hormone) to stop the growth and spread of cancer cells.
Flutamide comes as a capsule to take by mouth. It is usually taken with or without food every 8 hours (three times a day.) Take flutamide at around the same times 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 flutamide exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.
Continue to take flutamide along with the LHRH agonist treatment even if you feel well. Do not stop taking either medication 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.
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.
loss of appetite
decrease in sexual ability or desire
breast enlargement in men
swelling of the hands, feet, ankles, or lower legs
blue-green or orange-colored urine
Some side effects can be serious. If you experience any of the symptoms listed in the IMPORTANT WARNING section, call your doctor immediately.
Although it is rare, some men taking flutamide have developed breast cancer. Talk to your doctor about the risks of taking this medication.
Flutamide 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 [at http://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 and away from excess heat and moisture (not in the bathroom). Throw away any medication that is outdated or no longer needed. Talk to your pharmacist about the proper disposal of your medication.
In case of overdose, call your local poison control center at 1-800-222-1222. If the victim has collapsed or is not breathing, call local emergency services at 911.
breast enlargement and tenderness
Keep all appointments with your doctor and the laboratory. Your doctor will order certain lab tests to check your body's response to flutamide.
Do not let anyone else take your medication. Ask your pharmacist any questions you have about refilling your prescription.
It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.
Last Revised - 12/01/2008
AHFS® Consumer Medication Information. © Copyright, 2015. The American Society of Health-System Pharmacists, Inc., 7272 Wisconsin Avenue, Bethesda, Maryland. All Rights Reserved. Duplication for commercial use must be authorized by ASHP.