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The product code(s) for this leaflet is: PLGB 00166/0424.
Xtandi 40 mg and 80 mg film-coated tablets (Great Britain)
Xtandi 40 mg film-coated tablets
Xtandi 80 mg film-coated tablets
enzalutamide
1. What Xtandi is and what it is used for
2. What you need to know before you take Xtandi
3. How to take Xtandi
4. Possible side effects
5. How to store Xtandi
6. Contents of the pack and other information
Xtandi contains the active substance enzalutamide. Xtandi is used to treat adult men with prostate cancer that:
Or
Xtandi is a medicine that works by blocking the activity of hormones called androgens (such as testosterone). By blocking androgens, enzalutamide stops prostate cancer cells from growing and dividing.
Seizures
Seizures were reported in 5 in every 1,000 people taking Xtandi, and fewer than 3 in every 1,000 people taking placebo (see ‘Other medicines and Xtandi’ below and section 4 ‘Possible side effects’).
If you are taking a medicine that can cause seizures or that can increase the susceptibility for having seizures (see ‘Other medicines and Xtandi’ below).
If you have a seizure during treatment:
See your doctor as soon as possible. Your doctor may decide that you should stop taking Xtandi.
Posterior reversible encephalopathy syndrome (PRES)
There have been rare reports of PRES, a rare, reversible condition involving the brain, in patients treated with Xtandi. If you have a seizure, worsening headache, confusion, blindness or other vision problems, please contact your doctor as soon as possible. (See also section 4 ‘Possible side effects’).
Risk of new cancers (second primary malignancies)
There have been reports of new (second) cancers including cancer of the bladder and colon in patients treated with Xtandi.
See your doctor as soon as possible if you notice signs of gastrointestinal bleeding, blood in the urine, or frequently feel an urgent need to urinate when taking Xtandi.
Talk to your doctor before taking Xtandi
Please tell your doctor if you have any of the following:
Any heart or blood vessel conditions, including heart rhythm problems (arrhythmia), or are being treated with medicines for these conditions. The risk of heart rhythm problems may be increased when using Xtandi.
If you are allergic to enzalutamide, this may result in a rash or swelling of the face, tongue, lip or throat. If you are allergic to enzalutamide or any of the other ingredients of this medicine, do not take Xtandi.
Serious skin rash or skin peeling, blistering and/or mouth sores have been reported in association with Xtandi treatment. Seek medical attention immediately if you notice any of these symptoms.
If any of the above applies to you or you are not sure, talk to your doctor before taking this medicine.
This medicine is not for use in children and adolescents.
Tell your doctor if you are taking, have recently taken or might take any other medicines. You need to know the names of the medicines you take. Keep a list of them with you to show to your doctor when you are prescribed a new medicine. You should not start or stop taking any medicine before you talk with the doctor that prescribed Xtandi.
Tell your doctor if you are taking any of the following medicines. When taken at the same time as Xtandi, these medicines may increase the risk of a seizure:
Tell your doctor if you are taking the following medicines. These medicines may influence the effect of Xtandi, or Xtandi may influence the effect of these medicines.
This includes certain medicines used to:
Xtandi might interfere with some medicines used to treat heart rhythm problems (e.g. quinidine, procainamide, amiodarone and sotalol) or might increase the risk of heart rhythm problems when used with some other medicines [e.g. methadone (used for pain relief and part of drug addiction detoxification), moxifloxacin (an antibiotic), antipsychotics (used for serious mental illnesses)].
Tell your doctor if you are taking any of the medicines listed above. The dose of Xtandi or any other medicines that you are taking may need to be changed.
Xtandi may have moderate influence on the ability to drive and use machines. Seizures have been reported in patients taking Xtandi. If you are at higher risk of seizures, talk to your doctor.
This medicine contains less than 1 mmol sodium (less than 23 mg) per film-coated tablet, that is to say essentially ‘sodium-free’.
Always take this medicine exactly as your doctor has told you. Check with your doctor if you are not sure.
The usual dose is 160 mg (four 40 mg film-coated tablets or two 80 mg film-coated tablets), taken at the same time once a day.
Your doctor may also prescribe other medicines while you are taking Xtandi.
If you take more tablets than prescribed, stop taking Xtandi and contact your doctor. You may have an increased risk of seizure or other side effects.
Do not stop taking this medicine unless your doctor tells you to.
If you have any further questions on the use of this medicine, ask your doctor.
Like all medicines, this medicine can cause side effects, although not everybody gets them.
Seizures were reported in 5 in every 1,000 people taking Xtandi, and in fewer than 3 in every 1,000 people taking placebo.
Seizures are more likely if you take more than the recommended dose of this medicine, if you take certain other medicines, or if you are at higher than usual risk of seizure.
If you have a seizure, see your doctor as soon as possible. Your doctor may decide that you should stop taking Xtandi.
There have been rare reports of PRES (may affect up to 1 in 1,000 people), a rare, reversible condition involving the brain, in patients treated with Xtandi. If you have a seizure, worsening headache, confusion, blindness or other vision problems, please contact your doctor as soon as possible.
Very common (may affect more than 1 in 10 people)
Tiredness, fall, broken bones, hot flushes, high blood pressure
Common (may affect up to 1 in 10 people)
Headache, feeling anxious, dry skin, itching, difficulty remembering, blockage of the arteries in the heart (ischemic heart disease), breast enlargement in men (gynaecomastia), symptom of restless legs syndrome (an uncontrollable urge to move a part of the body, usually the leg), reduced concentration, forgetfulness, change in sense of taste
Uncommon (may affect up to 1 in 100 people)
Hallucinations, difficulty thinking clearly, low white blood cell count
Not known (frequency cannot be estimated from the available data)
Muscle pain, muscle spasms, muscular weakness, back pain, changes in ECG (QT prolongation), upset stomach including feeling sick (nausea), a skin reaction that causes red spots or patches on the skin that may look like a target or “bulls-eye” with a dark red centre surrounded by paler red rings (erythema multiforme), rash, being sick (vomiting), swelling of the face, lips, tongue and/or throat, reduction in blood platelets (which increases risk of bleeding or bruising), diarrhoea
If you get any side effects, talk to your doctor. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via the Yellow Card Scheme at: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store. By reporting side effects you can help provide more information on the safety of this medicine.
Keep this medicine out of the sight and reach of children.
Do not use this medicine after the expiry date which is stated on the cardboard wallet and outer carton after EXP. The expiry date refers to the last day of that month.
This medicine does not require any special storage conditions.
Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use. These measures will help protect the environment.
The active substance is enzalutamide.
Each Xtandi 40 mg film-coated tablet contains 40 mg of enzalutamide.
Each Xtandi 80 mg film-coated tablet contains 80 mg of enzalutamide.
The other ingredients of the film-coated tablets are:
Xtandi 40 mg film-coated tablets are yellow round film-coated tablets, debossed with E 40. Each carton contains 112 tablets in 4 blister wallets of 28 tablets each.
Xtandi 80 mg film-coated tablets are yellow oval film-coated tablets, debossed with E 80
Each carton contains 56 tablets in 4 blister wallets of 14 tablets each.
This leaflet was last revised in 12/2022.