My Cart Find A Store

Drug

Flutamide

Pronounced

"FLEW-tuh-mide"

Uses

This medication is used to treat men with prostate cancer. Flutamide belongs to a class of drugs known as anti-androgens (anti-testosterone). Testosterone, a natural hormone, helps prostate cancer to grow and spread. Flutamide works by blocking the effects of testosterone, thereby slowing the growth and spread of prostate cancer.

Warning

Rarely, flutamide has caused severe (sometimes fatal) liver problems. Immediately tell your doctor if you develop symptoms of liver problems (such as nausea/vomiting that doesn't stop, stomach/abdominal pain that doesn't go away, loss of appetite, severe tiredness, dark urine, yellowing eyes/skin, aching muscles, joint pain). Liver problems can happen at any time while taking flutamide, but they occur most often during the first 3 months of treatment. Your doctor will tell you whether to stop or continue flutamide. Your doctor will monitor your liver function with blood tests while you take flutamide. Keep all medical and lab appointments. Avoid alcohol while taking flutamide.

How to Use This Medication

Read the Patient Information Leaflet if available from your pharmacist before you start using flutamide and each time you get a refill. If you have any questions, ask your doctor or pharmacist.

Take this medication by mouth with or without food as directed by your doctor, usually 3 times daily.

The dosage is based on your medical condition and response to treatment.

Use this medication regularly to get the most benefit from it. To help you remember, take it at the same times each day. Do not stop any medications for your prostate cancer unless told to do so by your doctor. Stopping your medications could allow the cancer to spread more rapidly.

Tell your doctor if your condition lasts or gets worse (such as urination becomes more difficult, bone pain increases).

Copyright © 2025 TraceGains, Inc. All rights reserved.

RxAnswers™ is a copyrighted combined product from TraceGains and First DataBank, Inc.

Drug information is selected from data included with permission and copyrighted by First DataBank, Inc. This is a summary and does not contain all possible information about this product. For complete information about this product or your specific health needs, ask your healthcare professional. Always seek the advice of your healthcare professional if you have any questions about this product or your medical condition. This information is not intended as individual medical advice and does not substitute for the knowledge and judgment of your healthcare professional. This information does not contain any assurances that this product is safe, effective or appropriate for you.

This information is intended only for residents of the United States. Products sold under the same brand names in other countries may contain different ingredients.

Learn more about First DataBank

There are some limitations on the information provided in “Nutrient Interactions.” Do NOT rely solely on the information in this article. Please read the disclaimer

Learn more about TraceGains, the company.

TraceGains and/or its suppliers make no warranties or representations as to the accuracy or completeness of this content herein or that of any organization referred or linked to within this content and will not be liable for any damages arising out of your access to or use of any information found herein or that of any organization referred to within this content.

Information expires December 2025.