Zyban 150mg Prolonged-Release Film-Coated Tablets
Patient Information Leaflet
Zyban® 150mg prolonged-release film-coated tablets (bupropion hydrochloride)
Keep this leaflet. You may need to read it again.
If you have more questions, ask your doctor or your pharmacist.
This medicine has been prescribed for you only. Don’t pass it on to others. It may harm them, even if their signs of illness are the same as yours.
If you get any side effects, talk to your doctor or pharmacist. This includes any possible side effects not listed in this leaflet. See section 4
The name of your medicine is Zyban 150mg prolonged-release film-coated tablets but will be referred to as Zyban throughout the remainder of the leaflet.
What is in this leaflet
1. What Zyban is and what it is used for
2. What you need to know before you take Zyban
3. Howto take Zyban
4. Possible side effects
5. How to store Zyban
6. Contents of the pack and other information
1 What Zyban is and what it is used for
Zyban is a medicine prescribed to help you stop smoking, when you also have motivational support such as taking part in a ‘stop smoking’ programme.
Zyban will be most effective if you are fully committed to giving up smoking. Ask your doctor or pharmacist for advice on treatments and other support to help you stop.
2 What you need to know before you take Zyban Don’t take Zyban
• if you are allergic to bupropion or any of the other ingredients of this medicine (listed in Section 6)
• if you are taking any other medicines which contain bupropion
• if you have a condition that causes fits (seizures), such as epilepsy, or if you have a history of fits
• if you have an eating disorder, or had one in the past (for example, bulimia or anorexia nervosa)
• if you have severe liver problems, such as cirrhosis
• if you have a brain tumour
• if you are usually a heavy drinker and you have just stopped drinking alcohol, or are going to stop while you’re taking Zyban
• if you have recently stopped taking sedatives or medicines to treat anxiety (especially benzodiazepines or similar medicines), or if you are going to stop them while you’re taking Zyban
• if you have a bipolar disorder (extreme mood swings), as Zyban could bring on an episode of this illness
• if you are taking medicines for depression or Parkinson’s disease called monoamine oxidase inhibitors (MAOIs), or have taken them in the last 14 days. The timing may be shorter for some types of MAOIs, your doctor will advise you.
If any of these applies to you, talk to your doctor straight away, and don’t take Zyban.
Warnings and Precautions
Talk to your doctor or pharmacist before taking Zyban.
This is because some conditions make it more likely that you will have side effects (see also section 4).
Children and adolescents
Zyban is not recommended for people under 18 years.
Adults
Fits (seizures)
Zyban has been shown to cause fits (seizures) in about 1 in 1,000 people. (See also Other medicines and Zyban later in this section and Section 4, 'Possible side effects’, for more information).
Fits are more likely:
• if you regularly drink a lot of alcohol
• if you have diabetes for which you use insulin or tablets
• if you have had a serious head injury or a history of head trauma.
If any of these applies to you, don’t take Zyban unless you have agreed with your doctor that there is a strong reason for doing so.
If you have a fit (seizure) during treatment:
->Stop taking Zyban and don’t take any more. See your doctor.
You may have more risk of side effects:
• if you have kidney or liver problems
• if you are aged over 65.
You will need to take a lower dose (see Section 3) and be checked closely while you are taking Zyban.
If you have had any mental health problems...
Some people taking Zyban have had hallucinations or delusions (seeing, hearing or believing things that are not there), disordered thoughts or extreme mood swings. These effects are more likely in people who have had mental health problems before.
If you feel depressed or suicidal...
Some people become depressed when they try to stop smoking; very occasionally, they may think about committing suicide, or try to do so. These symptoms have affected people taking Zyban, most often in the first few weeks of treatment.
If you feel depressed or think about suicide:
-> Contact your doctor or go to a hospital straight away.
High blood pressure and Zyban...
Some people taking Zyban have developed high blood pressure which needs treatment. If you already have high blood pressure, it can become worse. This is more likely if you are also using nicotine patches to help you stop smoking.
->You will have your blood pressure checked before you take Zyban and while you are taking it, especially if you already have high blood pressure. If you are also using nicotine patches, your blood pressure needs to be checked every week. If your blood pressure increases, you may need to stop taking Zyban.
Other medicines and Zyban
Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines, including medicines you bought without a prescription.
There may be a higher than usual risk of fits if you take:
• medicines for depression or other mental health problems
(see also 'Don’t take Zyban’ at the beginning of Section 2)
• theophylline for asthma or lung disease
• tramadol, a strong painkiller
• medicines against malaria
• stimulants or other medicines to control your weight or appetite
• steroids (except creams and lotions for eye and skin conditions)
• antibiotics called quinolones
• some types of anti-histamines mainly used to treat allergies, that can cause sleepiness
• medicines for diabetes.
If you take any medicines in this list, talk to your doctor straight away, before you take Zyban (see section 3 under 'Some people need to take a lower dose’).
Some medicines can affect how Zyban works, or make it more likely that you’ll have side effects.
These include:
• medicines for depression (such as desipramine, imipramine, paroxetine) or other mental health problems (such as risperidone, thioridazine)
|
When to start and how much to take • Start taking Zyban while you are still smoking. • Set a Target Stop Smoking Day ideally during the second week you’re taking it. | ||
|
Week 1 Ideally keep smoking while taking Zyban |
Days 1 to 6 |
Take one tablet (150mg), once a day |
|
Day 7 |
Increase your dose to one tablet, twice a day, at least 8 hours apart, and not near to bedtime. | |
|
Week 2 |
Carry on taking one tablet, twice a day. Stop smoking this week, on your Target Stop Smoking Day. | |
|
Weeks 3 to 9 |
Carry on taking one tablet, twice a day for up to 9 weeks. If you have not been able to stop smoking after 7 weeks, your doctor will advise you to stop taking Zyban. You may be advised to stop taking Zyban gradually, after 7-9 weeks. | |
• medicines for Parkinson’s disease (such as levodopa, amantadine or orphenadrine)
• carbamazepine, phenytoin or valproate, to treat epilepsy or some mental health problems
• some medicines used to treat cancer (such as cyclophosphamide, ifosphamide)
• ticlopidine or clopidogrel, mainly used to treat heart disease or stroke
• some beta blockers (such as metoprolol), mainly used to treat high blood pressure
• some medicines for irregular heart rhythm (such as propafanone, flecainide)
• ritonavir or efavirenz, for treatment of HIV infection.
If you take any medicines on this list, check with your doctor. Your doctor will weigh up the benefits and risks to you of taking Zyban, or may decide to change the dose of the other medicine you are taking.
Zyban may make other medicines less effective:
• If you take tamoxifen used to treat breast cancer
If this applies to you, tell your doctor. It may be necessary to change to another treatment for smoking cessation.
The dose of some medicines may need to be reduced when you stop smoking. When you smoke, the chemicals absorbed into your body can cause some medicines to be less effective. When you stop smoking, your dose of these medicines may need to be reduced; otherwise, you may get side effects.
If you are taking any other medicines, check with your doctor if you notice any new symptoms that you think may be side effects.
Zyban with alcohol
Some people find they are more sensitive to alcohol while taking Zyban.
Your doctor may suggest you do not drink alcohol while you’re taking Zyban, or try to drink as little as possible. If you do drink a lot now, don’t just stop suddenly, because that may put you at risk of having a fit.
Effect on urine tests
Zyban may interfere with some urine tests to detect other drugs. If you require a urine test, tell your doctor or hospital that you are taking Zyban.
Pregnancy and breast-feeding
Don’t take Zyban if you are pregnant, think you may be pregnant or are planning to have a baby. Ask your doctor or pharmacist for advice before taking this medicine. Some, but not all studies have reported an increase in the risk of birth defects, particularly heart defects, in babies whose mothers were taking Zyban. It is not known if these are due to the use of Zyban.
The ingredients of Zyban can pass into breast milk. You should ask your doctor or pharmacist for advice before taking Zyban.
Driving and using machines
Some of the side effects of Zyban, such as feeling dizzy or lightheaded, may affect your concentration and judgement.
If you are affected, don’t drive or operate machinery.
3 How to take Zyban
Always take this medicine exactly as your doctor or pharmacist has told you. Check with your doctor or pharmacist if you are not sure.
Some people need to take a lower dose
...as they may be more likely to get side effects.
• if you are aged over 65
• if you have liver or kidney disease
• if you have a higher risk of fits (see Take special care with Zyban’ and Other medicines and Zyban in section 2) the maximum recommended dose for you is one 150 mg tablet once a day.
How to take your tablets
Take your Zyban tablets at least 8 hours apart. Don’t take Zyban near to bedtime - it may cause difficulty in sleeping.
You can take Zyban with or without food.
Swallow your Zyban tablets whole. Don’t chew them, crush them or split them - if you do, the medicine will be released into your body too quickly. This will make you more likely to have side effects, including fits.
If you take more Zyban than you should
If you take too many tablets, you may be more likely to have a fit or other side effects.
Don’t delay. Contact your doctor or your nearest hospital emergency department immediately.
If you forget to take Zyban
If you miss a dose, wait and take your next tablet at the usual time.
Do not take a double dose to make up for a forgotten dose.
If you stop taking Zyban
You may need to take Zyban for as long as 7 weeks to have its full effect.
Don’t stop taking Zyban without talking to your doctor first.
You may need to reduce your dose gradually.
If you have any further questions about using this medicine, ask your doctor or pharmacist.
4 Possible side effects
Like all medicines, Zyban can cause side effects, although not everyone gets them.
Fits (seizures)
Approximately 1 in every 1,000 people taking Zyban is at risk of having a fit.
Symptoms of a fit include convulsions, and usually loss of consciousness. Someone who has had a fit may be confused afterwards, and may not remember what has happened.
Fits are more likely if you take too much, if you take some other medicines, or if you are at higher than usual risk of fits (see Section 2).
If you have a fit, tell your doctor when you have recovered. Don’t take any more Zyban.
Allergic reactions
Rarely (up to 1 in 1,000) people may have potentially serious allergic reactions to Zyban. Signs of allergic reactions include:
• skin rash (including itchy, bumpy rash). Some skin rashes may need hospital treatment, especially if you also have a sore mouth or sore eyes
• unusual wheezing, or difficulty in breathing
• swollen eyelids, lips or tongue
• pains in muscles or joints
• collapse or blackout.
If you have any signs of an allergic reaction contact a doctor at once. Don’t take any more tablets.
Very common side effects
These may affect more than one in 10 people:
• difficulty in sleeping (make sure you don’t take Zyban near to bedtime).
Common side effects
These may affect up to one in 10 people:
• feeling depressed (see also Take special care with Zyban in Section 2)
• feeling anxious or agitated
• difficulty concentrating
• feeling shaky (tremor)
• headache
• feeling sick (nausea), being sick (vomiting)
• stomach pain or other upsets (such as constipation), changes in the taste of food, dry mouth,
• fever, dizziness, sweating, skin rash (sometimes due to an allergic reaction), itching.
Uncommon side effects
These may affect up to one in 100 people:
• ringing in the ears, visual disturbances
• increase in blood pressure (sometimes severe), flushing
• loss of appetite (anorexia)
• feeling weak
• chest pain
• feeling confused
• rapid heartbeat
Rare side effects
These may affect up to one in 1,000 people:
• fits (see the beginning of this section)
• twitching, muscle stiffness, uncontrolled movements, problems with walking or coordination (ataxia)
• palpitations
• fainting, feeling faint when you stand up suddenly, because your blood pressure falls
• feeling irritable or hostile; strange dreams (including nightmares)
• loss of memory
• tingling or numbness
• severe allergic reactions; rash together with joint and muscle pains (see the beginning of this section)
• urinating (passing water) more or less than usual
• severe skin rashes that may affect the mouth and other parts of the body and can be life-threatening
• worsening of psoriasis (thickened patches of red skin)
• your skin or the whites of your eyes turning yellow (jaundice), increase in liver enzymes, hepatitis
• changes in blood sugar levels
• feeling unreal or strange (depersonalisation)', seeing or hearing things that are not there (hallucinations).
Very rare side effects
These may affect up to one in 10,000 people:
• feeling restless, aggressive
• sensing or believing things that are not true (delusions); severe suspiciousness (paranoia).
Other side effects
Other side effects have occurred in a small number of people but their exact frequency is unknown:
• thoughts of harming or killing themselves while taking Zyban or soon after stopping treatment (see Section 2, What you need to know before you take Zyban). If you have these thoughts, contact your doctor or go to a hospital straight away
• loss of contact with reality and unable to think or judge clearly
(psychosis); other symptoms may include hallucinations and/or delusions.
• Reduced number of red blood cells (anaemia), reduced number of white blood cells (leucopenia) and reduced number of platelets (thrombocytopenia)
Effects of giving up smoking
People who stop smoking are often affected by nicotine withdrawal. This can also affect people taking Zyban.
Signs of nicotine withdrawal include:
• difficulty in sleeping
• tremor or sweating
• feeling anxious, agitated or depressed, sometimes with thoughts of suicide.
Talk to your doctor if you have any concerns about how you feel.
Reporting of side effects
If you get any side effects, talk to your doctor or pharmacist. This includes any 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.
By reporting side effects you can help provide more information on the safety of this medicine.
5. How to store Zyban
Do not store above 25°C.
Store in the original package
Keep out of the reach and sight of children.
Do not use Zyban after the expiry date which is stated on the pack. The expiry date refers to the last day of that month.
Medicines should not be disposed of via waste water or household waste. Ask your pharmacist how to dispose of medicines no longer required. These measures will help to protect the environment.
6 Contents of the pack and other information
Each prolonged-release film-coated tablet contains 150mg bupropion hydrochloride.
Tablet core: microcrystalline cellulose, hypromellose, cysteine hydrochloride monohydrate, magnesium stearate Tablets coating: hypromellose, macrogol 400, titanium dioxide (E171), carnauba wax
Printing Ink: hypromellose, black iron oxide (E172) and propylene glycol
Zyban are small white, round, biconvex, film coated tablets marked ‘GX CH7’ on one side, and plain on the reverse.
They are available in blister packs of 30 or 60 tablets.
Manufactured by GlaxoSmithKline Pharmaceuticals S.A., Poznan, Lengyelorszag, Poland. Procured from within the EU. Product Licence Holder: Quadrant Pharmaceuticals Ltd, Lynstock House, Lynstock Way, Lostock, Bolton BL6 4SA. Repackaged by Maxearn Ltd. Bolton BL6 4SA.
PL 20774/1161 Zyban 150mg Prolonged-Release Film-Coated Tablets
POM
Leaflet prepared 28th July 2015
Zyban is a registered trademark of GlaxoSmithKline Group of companies.
PP2/1161/V2