Enzalutamide is used to treat men with a certain type of prostate cancer. This type of prostate cancer has not responded to other treatments to lower the male hormone testosterone and has also spread to other parts of the body. This medication belongs to a class of drugs known as anti-androgens (anti-testosterone). It works by blocking the effects of testosterone to slow the growth and spread of prostate cancer.
Read the Patient Information Leaflet if available from your pharmacist before you start taking enzalutamide and each time you get a refill. If you have any questions, ask your doctor or pharmacist.
The dosage is based on your medical condition, response to treatment, and other medications you may be taking. Be sure to tell your doctor and pharmacist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
Do not increase your dose or take this drug more often than prescribed. Your condition will not improve any faster, and your risk of side effects will increase.
Take this medication regularly to get the most benefit from it. To help you remember, take it at the same time each day.
Since this drug can be absorbed through the skin and lungs and may harm an unborn baby, women who are pregnant or who may become pregnant should not handle this medication or breathe the dust from the capsules.
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.
Get medical help right away if you have any very serious side effects, including: persistent headache, decreased alertness, seizures, sudden vision changes, mental/mood changes (such as memory problems, confusion).
This medication may lower your ability to fight infections. This may make you more likely to get a serious (rarely fatal) infection or make any infection you have worse. Tell your doctor right away if you have any signs of infection (such as fever, chills, persistent sore throat, cough).
A very serious allergic reaction to this drug is rare. However, get medical help right away 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.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Before taking enzalutamide, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: high blood pressure, seizures, risk factors for having seizures (such as brain injury, stroke, brain tumor).
Since this medication may rarely cause seizures in some people, ask your doctor if you should avoid activities where a sudden loss of consciousness may cause serious harm to you or others.
Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
Enzalutamide should not be used in women. This medication must not be used during pregnancy. It may harm an unborn baby.
Men who have a pregnant partner must use a condom during sexual activity during enzalutamide treatment and for 3 months after treatment has stopped. Men with a female partner of childbearing age who is not pregnant should use a condom and another form of birth control during enzalutamide treatment and for 3 months after treatment has stopped. Ask your doctor for more details. If your partner becomes pregnant or thinks she may be pregnant, tell the doctor right away.
Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.
Other medications can affect the removal of enzalutamide from your body, which may affect how enzalutamide works. Examples include rifamycins (such as rifabutin, rifampin), seizure medications (such as phenobarbital, phenytoin), St. John's wort, among others.
Enzalutamide can speed up the removal of other medications from your body, which may affect how they work. Examples of affected drugs include asunaprevir, cobicistat, ergot alkaloids (such as dihydroergotamine, ergotamine), fentanyl, lurasidone, pimozide, quinidine, sirolimus, suvorexant, tacrolimus, voriconazole, among others.
If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center. Symptoms of overdose may include seizures.
Laboratory and/or medical tests (such as blood pressure) should be performed periodically to monitor your progress or check for side effects. Consult your doctor for more details.
If you miss a dose, take it as soon as you remember. If it is near the time of the next dose, skip themissed dose and resume your usual dosing schedule. Do not double the dose to catch up.
Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.Information last revised February 2017. Copyright(c) 2017 First Databank, Inc.
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