Imatinib Zentiva 100 mg film-coated tablets

Read all of this leaflet carefully before you start taking this medicine because it contains important information for you.

• Keep this leaflet. You may need to read it again.
• If you have any further questions, ask your doctor or pharmacist.
• This medicine has been prescribed for you only. Do not 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 (section 4).

What is in this leaflet:

1. What imatinib is and what it is used for
2. What you need to know before you take imatinib
3. How to take imatinib
4. Possible side effects
5. How to store imatinib
6. Contents of the pack and other information

Imatinib is a treatment for adults and children for:

• Chronic myeloid leukaemia (CML). Leukaemia is a cancer of white blood cells. These white cells usually help the body to fight infection. Chronic myeloid leukaemia is a form of leukaemia in which certain abnormal white cells (called myeloid cells) start growing out of control.
• Philadelphia chromosome positive acute lymphoblastic leukaemia (Ph-positive ALL). Leukaemia is a cancer of white blood cells. These white cells usually help the body to fight infection. Acute lymphoblastic leukaemia is a form of leukaemia in which certain abnormal white cells (called lymphoblasts) start growing out of control. Imatinib inhibits the growth of these cells.

Imatinib is also a treatment for adults for:

• Myelodysplastic/myeloproliferative diseases (MDS/MPD). These are a group of blood diseases in which some blood cells start growing out of control. Imatinib inhibits the growth of these cells in a certain subtype of these diseases.
• Hypereosinophilic syndrome (HES) and/or chronic eosinophilic leukaemia (CEL). These are blood diseases in which some blood cells (called eosinophils) start growing out of control. Imatinib inhibits the growth of these cells in a certain subtype of these diseases.
• Dermatofibrosarcoma protuberans (DFSP). DFSP is a cancer of the tissue beneath the skin in which some cells start growing out of control. Imatinib inhibits the growth of these cells.

In the rest of this leaflet, we will use the abbreviations when talking about these diseases.

If you have any questions about how imatinib works or why this medicine has been prescribed for you, ask your doctor

Do not take imatinib

• if you are allergic to imatinib or any of the other ingredients of this medicine listed in section 6.

If this applies to you, tell your doctor without taking imatinib.

If you think you may be allergic but are not sure, ask your doctor for advice.

Warnings and precautions

Talk to your doctor before taking imatinib if you:

• have or have ever had a liver, kidney or heart problem.
• are taking the medicine levothyroxine because your thyroid has been removed.
• have ever had or might now have a hepatitis B infection. This is because imatinib could cause hepatitis B to become active again, which can be fatal in some cases. Patients will be carefully checked by their doctor for signs of this infection before treatment is started.

If any of these apply to you, tell your doctor before taking imatinib.

During treatment with imatinib, tell your doctor straight away if you put on weight very quickly. Imatinib may cause your body to retain water (severe fluid retention).

While you are taking imatinib, your doctor will regularly check whether the medicine is working. You will also have blood tests and be weighed regularly.

Children and adolescents

Imatinib is also a treatment for children with CML. There is no experience in children with CML below 2 years of age. There is limited experience in children with Ph-positive ALL and very limited experience in children with MDS/MPD, DFSP and HES/CEL.

Some children and adolescents taking imatinib may have slower than normal growth. The doctor will monitor the growth at regular visits.

Other medicines and imatinib

Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines, including medicines obtained without a prescription (such as paracetamol) and including herbal medicines (such as St. John’s Wort). Some medicines can interfere with the effect of imatinib when taken together. They may increase or decrease the effect of imatinib, either leading to increased side effects or making imatinib less effective. Imatinib may do the same to some other medicines.

Tell your doctor if you are using medicines that prevent the formation of blood clots.

Pregnancy, breast-feeding and fertility

• If you are pregnant or breast-feeding, think you may be pregnant or are planning to have a baby, ask your doctor for advice before taking this medicine.
• Imatinib is not recommended during pregnancy unless clearly necessary as it may harm your baby. Your doctor will discuss with you the possible risks of taking imatinib during pregnancy.
• Women who might become pregnant are advised to use effective contraception during treatment.
• Do not breast-feed during the treatment with imatinib.
• Patients who are concerned about their fertility while taking imatinib are advised to consult with their doctor.

Driving and using machines

You may feel dizzy or drowsy or get blurred vision while taking this medicine. If this happens, do not drive or use any tools or machines until you are feeling well again.

How much imatinib to take

Use in adults

Your doctor will tell you exactly how many tablets of imatinib to take.

If you are being treated for CML:

• The usual starting dose is 600mg
• to be taken as six 100 mg tablets or one 400mg tablet plus two 100 mg tablets once a day.

For CML, your doctor may prescribe a higher or lower dose depending on how you respond to the treatment. If your daily dose is 800 mg (eight 100 mg or two 400 mg tablets), you should take four 100 mg tablets or one 400 mg tablet in the morning and four 100 mg tablets or one 400 mg tablet in the evening.

If you are being treated for Ph-positive ALL:

The starting dose is 600 mg to be taken as six 100 mg tablets or one 400 mg tablet plus two 100 mg tablets once a day.

If you are being treated for MDS/MPD:

The starting dose is 400 mg to be taken as four 100 mg tablets or one 400 mg tablet once a day.

If you are being treated for HES/CEL:

The starting dose is 100 mg, to be taken as one 100 mg tablet once a day. Your doctor may decide to increase the dose to 400 mg, to be taken as four 100 mg tablets or one 400 mg tablet once a day, depending on how you respond to treatment.

If you are being treated for DFSP:

The dose is 800 mg per day (eight 100 mg or two 400 mg tablets), to be taken as four 100 mg tablets or one 400 mg tablet in the morning and four 100 mg tablets and one 400 mg tablet in the evening.

Use in children and adolescents

The doctor will tell you how many tablets of imatinib to give to your child. The amount of imatinib given will depend on your child’s condition, body weight and height. The total daily dose in children must not exceed 800 mg with CML and 600 mg with Ph+ALL. The treatment can either be given to your child as a once-daily dose or alternatively the daily dose can be split into two administrations (half in the morning and half in the evening).

When and how to take imatinib

• Take imatinib with a meal.
  This will help protect you from stomach problems when taking imatinib.
• Swallow the tablets whole with a large glass of water.
• The tablet can be divided into equal doses.

If you are unable to swallow the tablets, you can dissolve them in a glass of still water or apple juice.

• Use about 50 ml of each 100 mg tablet and 200 ml for each 400 mg tablet.
• Stir with a spoon until the tablets have completely dissolved.
• Once the tablet has dissolved, drink everything in the glass straight away. Traces of the dissolved tablets may be left behind in the glass.

How long to take imatinib

Keep taking imatinib every day for as long as your doctor tells you.

If you take more imatinib than you should

you have accidentally taken too many tablets, talk to your doctor straight away.

You may require medical attention. Take the medicine pack with you.

If you forget to take imatinib

• If you forget a dose, take it as soon as you remember. However if it is nearly time for the next dose, skip the missed dose.
• Then continue with your normal schedule.
• Do not take a double dose to make up a forgotten dose.

Some side effects may be serious. Tell your doctor straight away if you get any of the following:

Very common (may affect more than 1 in 10 people) or common (may affect up to 1 in 10 people):

• Rapid weight gain. Imatinib may cause your body to retain water (severe fluid retention).
• Signs of infection such as fever, severe chills, sore throat or mouth ulcers. Imatinib can reduce the number of white blood cells, so you might get infections more easily.
• Unexpected bleeding or bruising (when you have not hurt yourself).

Uncommon (may affect up to 1 in 100 people) or rare (may affect up to 1 in 1,000 people):

• Chest pain, irregular heart rhythm (signs of heart problems).
• Cough, having difficulty breathing or painful breathing (signs of lung problems).
• Feeling light-headed, dizzy or fainting (signs of low blood pressure).
• Feeling sick (nausea), with loss of appetite, dark-coloured urine, yellow skin or eyes (signs of liver problems).
• Rash, red skin with blisters on the lips, eyes, skin or mouth, peeling skin, fever, raised red or purple skin patches, itching, burning sensation, pustular eruption (signs of skin problems).
• Severe abdominal pain, blood in your vomit, stools or urine, black stools (signs of gastrointestinal disorders).
• Severely decreased urine output, feeling thirsty (signs of kidney problems).
• Feeling sick (nausea) with diarrhoea and vomiting, abdominal pain or fever (signs of bowel problems).
• Severe headache, weakness or paralysis of limbs or face, difficulty speaking, sudden loss of consciousness (signs of nervous system problems such as bleeding or swelling in skull/brain).
• Pale skin, feeling tired, breathlessness and having dark urine (signs of low levels of red blood cells).
• Eye pain or deterioration in vision, bleeding in the eyes.
• Pain in your hips or difficulty walking.
• Numb or cold toes and fingers (signs of Raynaud’s syndrome).
• Sudden swelling and redness of the skin (signs of a skin infection called cellulitis).
• Difficulty hearing.
• Muscle weakness and spasms with an abnormal heart rhythm (signs of changes in the amount of potassium in your blood).
• Bruising.
• Stomach pain with feeling sick (nausea).
• Muscle spasms with a fever, red-brown urine, pain or weakness in your muscles (signs of muscle problems).
• Pelvic pain sometimes with nausea and vomiting, with unexpected vaginal bleeding, feeling dizzy or fainting due to low blood pressure (signs of problems with your ovaries or womb).
• Nausea, shortness of breath, irregular heartbeat, clouding of urine, tiredness and/or joint discomfort associated with abnormal laboratory test results (e.g. high potassium, uric acid and calcium levels and low phosphorus levels in the blood).

Not known (frequency cannot be estimated from the available data):

• Combination of a widespread severe rash, feeling sick, fever, high levels of certain white blood cells or yellow skin or eyes (signs of jaundice) with breathlessness, chest pain/discomfort, severely decreased urine output and feeling thirsty etc. (sign of a treatment-related allergic reaction).
• Chronic renal failure
• Recurrence (reactivation) of hepatitis B infection when you have had hepatitis B in the past (a liver infection).

If you get any of the above, tell your doctor straight away.

Other side effects may include:

Very common: (may affect more than 1 in 10 people):

• Headache or feeling tired.
• Feeling sick (nausea), being sick (vomiting), diarrhoea or indigestion.
• Rash.
• Muscle cramps or joint, muscle or bone pain, during imatinib treatment or after you have stopped taking imatinib.
• Swelling such as around your ankles or puffy eyes.
• Weight gain.

If any of these affect you severely, tell your doctor.

Common (may affect up to 1 in 10 people):

• Anorexia, weight loss or a disturbed sense of taste.
• Feeling dizzy or weak.
• Difficulty in sleeping (insomnia).
• Discharge from the eye with itching, redness and swelling (conjunctivitis), watery eyes or having blurred vision.
• Nose bleeds.
• Pain or swelling in your abdomen, flatulence, heartburn or constipation.
• Itching.
• Unusual hair loss or thinning hair.
• Numbness of the hands or feet.
• Mouth ulcers.
• Joint pain with swelling.
• Dry mouth, dry skin or dry eye.
• Decreased or increased skin sensitivity.
• Hot flushes, chills or night sweats.

If any of these affect you severely, tell your doctor.

Not known (frequency cannot be estimated from the available data):

• Reddening and/or swelling on the palms of the hands and soles of the feet which may be accompanied by tingling sensation and burning pain.
• Slowing of growth in children and adolescents.

If any of these affect you severely, tell your doctor.

Reporting of side effects

If you get any side effects, talk to your doctor or pharmacist. 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.

What imatinib contains:

The active substance is imatinib mesilate. Each tablet of Imatinib contains imatinib mesilate equivalent to either 100 mg or 400 mg imatinib.

The other ingredients are:

Tablet core: Microcrystalline cellulose, low substituted hydroxypropyl cellulose, povidone, crospovidone (Type A), silica colloidal anhydrous, magnesium stearate.

Tablet coating: Hypromellose, macrogol 400, talc, red iron oxide (E172), yellow iron oxide (E172).

What imatinib looks like and contents of the pack

Imatinib 100 mg film-coated tablets are dark yellow to brownish-orange, round shaped, film-coated tablets of 10.1 mm (± 5%) diameter with a break-line on one side and “100” on the other side. The tablet can be divided into equal doses.

Imatinib 400 mg film-coated tablets are dark yellow to brownish-orange, oval-shaped, film-coated tablets, 21.6 mm long and 10.6 mm wide (± 5%) wide with a break-line on one side and “400” on the other side. The tablet can be divided into equal doses.

They are supplied in packs of 10, 20, 30, 60, 90, 120, 180 film-coated tablets.

Not all pack sizes may be marketed.

The Marketing Authorisation Holder is

The manufacturer is

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