


Ask a doctor about a prescription for CLOZAPINE STADA 100 mg TABLETS
Package Leaflet: Information for the Patient
Clozapina Stada 100 mg tablets EFG
Read this package leaflet carefully before you start taking this medicine, because it contains important information for you.
Contents of the package leaflet
The active substance of Clozapina Stada is clozapine, which belongs to a group of medicines called antipsychotics (medicines used to treat specific mental disorders such as psychosis).
Clozapine is used to treat patients with schizophrenia when other medicines have not worked. Schizophrenia is a mental illness that involves disorders of thought, emotional reactions, and behavioral disorders. You can only use this medicine if you have already tried at least two other neuroleptic medicines, including one of the new atypical neuroleptics to treat schizophrenia, and these medicines have not responded, or have caused severe adverse reactions that cannot be treated.
Clozapine is also indicated for treating severe thought disorders, emotional reactions, and behavioral disorders that occur in Parkinson's disease, when other medicines have not worked.
Tell your doctor and do not take clozapine if any of the above circumstances apply to you.
Clozapine should not be given to anyone who is unconscious or in a coma.
Warnings and precautions
The safety measures mentioned in this section are very important. You must comply with them to minimize the risk of severe adverse reactions that can be life-threatening.
Tell your doctor before starting treatment with clozapine if you have or have had any of the following circumstances:
Tell your doctor immediately before taking the next clozapine tablet if:
Medical examinations and blood tests
Before starting treatment with clozapine, your doctor will ask you about your medical history and have a blood test to ensure that your white blood cell count is normal. It is essential to know this, as your body needs white blood cells to fight infections.
Make sure you have regular blood tests before starting treatment, during treatment, and after finishing treatment with clozapine.
Before starting treatment, your doctor will also perform a physical examination. Your doctor may perform an electrocardiogram (ECG) to check your heart, but only if it is necessary for you or if you have any special concerns.
If you have liver disorders, you will have periodic liver function tests throughout treatment with clozapine.
If you have high blood sugar levels (diabetes), your doctor may perform periodic checks of your blood sugar levels.
Clozapine can alter blood lipid levels. Clozapine can cause weight gain. Your doctor may monitor your weight and lipid levels.
If you have a mild headache, dizziness, or weakness, or clozapine makes you feel this way, be careful when getting up from a sitting or lying position, as this can increase the risk of falls.
If you need to have surgery or if you cannot walk for a long period, tell your doctor that you are taking clozapine. You may be at risk of having a blood clot (thrombosis).
Children and adolescents under 16 years
If you are under 16 years old, you should not take clozapine, as there is not enough information available for its use in this age group.
Use in elderly patients (60 years and older)
Patient over 60 years may be more susceptible to the following adverse effects during treatment with clozapine:
Tell your doctor or pharmacist if you suffer from a disease called dementia.
Other medicines and Clozapina Stada
Tell your doctor or pharmacist if you are taking, have recently taken, or might take any other medicines, including those obtained without a prescription or herbal treatments. You may need to take a different amount of your medicines or different medicines.
Do not take clozapine with other medicines that prevent the proper functioning of the bone marrow and/or reduce the number of blood cells produced by the body, such as:
These medicines increase your risk of developing agranulocytosis (deficit of white blood cells in the blood).
Taking clozapine at the same time as other medicines can affect the proper action of clozapine and/or the other medicines. Tell your doctor if you intend to take, are taking (even if treatment is about to finish), or have recently stopped taking any of the following medicines:
This list is not complete. Your doctor and pharmacist have more information about medicines that should be administered with caution or avoided while taking clozapine. They also know if the medicines you are taking belong to any of the groups listed above.
Discuss this with them.
Taking Clozapina Stada with food and drinks
Do not drink alcohol during treatment with clozapine.
Tell your doctor if you smoke and how often you take drinks containing caffeine (coffee, tea, cola). Suddenly changing your smoking or caffeine habits can also change the effects of clozapine.
Pregnancy, breastfeeding, and fertility
If you are pregnant or breastfeeding, think you may be pregnant, or plan to become pregnant, consult your doctor before using this medicine.
Pregnancy
Your doctor will discuss with you the benefits and possible risks of using this medicine during pregnancy.
Inform your doctor immediately if you become pregnant during treatment with clozapine.
The following symptoms may occur in newborn babies of mothers who have used clozapine in the last trimester (the last three months of pregnancy):
If your baby develops any of these symptoms, you should contact your doctor.
Breastfeeding
Do not breastfeed while taking clozapine. Clozapine, the active substance of this medicine, can pass into breast milk and affect the baby.
Fertility
Some women who take certain medicines for mental illnesses have irregular periods or do not have periods. If this has happened to you, your periods will return to normal when your medication is replaced by clozapine. This means you should use effective contraceptives.
Driving and using machines
Clozapine can cause tiredness, drowsiness, and seizures, especially at the start of treatment. Therefore, you should avoid driving or operating machinery while you have these symptoms.
Clozapine can cause symptoms such as drowsiness, dizziness, or vision changes and reduce your reaction ability. These effects, as well as the disease itself, can make it difficult for you to drive vehicles or operate machinery. Therefore, do not drive, operate machinery, or engage in other activities that require special attention until your doctor assesses your response to this medicine.
Clozapina Stada contains lactose
This medicine contains lactose. If your doctor has told you that you have an intolerance to some sugars, consult your doctor before taking this medicine.
To minimize the risk of experiencing epileptic seizures, drowsiness, or hypotension, it is necessary for your doctor to gradually increase the dose. Follow the administration instructions indicated by your doctor exactly. In case of doubt, consult your doctor or pharmacist again.
It is essential that you do not change the dose or stop taking clozapine without asking your doctor first.
Continue taking clozapine for the time your doctor has indicated. If you are a patient 60 years or older, your doctor may start treatment with a lower dose and increase your dose more gradually, as you may be more susceptible to developing some unexpected adverse reactions. (See section 2 "What you need to know before taking Clozapina Stada").
If you cannot achieve the prescribed dose with this tablet presentation, other presentations of this medication are available to achieve the prescribed dose.
Method of administration
Oral route.
Swallow the tablet with water.
Treatment of schizophrenia
Unless your doctor prescribes another dose, treatment starts with 12.5 mg (half a 25 mg tablet) once or twice on the first day, followed by 25 mg once or twice on the second day. If you tolerate it well, your doctor will gradually increase the dose in amounts of 25 or 50 mg over 2 to 3 weeks until reaching a daily dose of 300 mg. It may be necessary to continue increasing the dose in amounts of 50 or 100 mg twice a week, or preferably once a week.
The normal daily dose of clozapine is between 200 and 450 mg, divided into several doses per day. Some people may need higher doses. Doses of up to 900 mg per day are allowed.
At daily doses above 450 mg, adverse reactions may increase (particularly seizures). Always take the minimum dose that is effective for you. Most patients should take part of the dose in the morning and another part at night. Your doctor will tell you exactly how to divide your daily dose. If your daily dose does not exceed 200 mg, you can take it as a single dose at night. Once the treatment with clozapine is working well for some time, your doctor will try treatment with lower doses. You will need to take clozapine for at least 6 months.
Treatment of severe thought disorders in patients with Parkinson's disease
Unless your doctor prescribes another dose, the normal initial dose of clozapine is 12.5 mg (half a 25 mg tablet) at night.
Your doctor will slowly increase the dose in amounts of 12.5 mg, with a maximum of two increases per week, until reaching a maximum dose of up to 50 mg by the end of the second week. Dose increments should be stopped or postponed if you feel weak, dizzy, or confused. To avoid such symptoms, your blood pressure will be measured during the first weeks of treatment.
The effective daily dose is between 25 and 37.5 mg, taken as a single dose at night. The dose can only be increased to more than 50 mg per day in exceptional cases. The maximum dose is 100 mg per day. Always take the minimum dose that is effective for you.
If you take more Clozapina Stada than you should
If you think you have taken more clozapine than you should, or if someone has taken some of your tablets, inform your doctor or pharmacist immediately.
In case of overdose or accidental ingestion, consult your doctor or pharmacist immediately or call the Toxicology Information Service, phone: 91 562 04 20, indicating the medication and the amount ingested.
The symptoms of overdose are:
Drowsiness, fatigue, lack of energy, unconsciousness, coma, confusion, hallucinations, agitation, incoherent speech, numbness in the limbs, tremors in the hands, seizures, increased saliva production, dilated pupils, blurred vision, low blood pressure, collapse, rapid or irregular heartbeat, or difficulty breathing.
If you forget to take Clozapina Stada
If you forget to take a dose, take the missed dose as soon as possible. If it is almost time for the next dose, do not take the missed dose and take the next dose at the scheduled time. Do not take a double dose to make up for the missed dose. Contact your doctor as soon as possible if you have stopped taking clozapine for more than 48 hours.
If you interrupt treatment with Clozapina Stada
Do not interrupt treatment with clozapine without asking your doctor, as you may experience withdrawal symptoms. These symptoms include sweating, headache, nausea (feeling dizzy), vomiting (being dizzy), and diarrhea. If you experience any of these symptoms, consult your doctor immediately. These symptoms can be followed by more severe ones unless you are treated immediately. Your initial symptoms may recur. If you need to interrupt treatment, it is recommended to gradually decrease the dose in amounts of 12.5 mg over a period of 1 to 2 weeks.
Your doctor will give you instructions on how to reduce your daily dose. If you need to interrupt your treatment suddenly, your doctor should examine you.
If your doctor decides to restart treatment with clozapine and your last dose of clozapine was 2 days or more ago, you should start with the initial dose of 12.5 mg.
If you have any other questions about the use of this medication, ask your doctor or pharmacist.
Like all medications, clozapine can cause adverse effects, although not everyone experiences them.
Some adverse effects can be serious and require immediate medical attention:
Tell your doctor immediately before taking the next clozapine tablet if you experience any of the following circumstances:
Very common (affect more than 1 in 10 people)
Common (affect up to 1 in 10 people)
Uncommon (affect up to 1 in 100 people)
Rare (affect up to 1 in 1,000 people)
Rare (affect up to 1 in 1,000 patients) or very rare (affect up to 1 in 10,000 people)
Very rare (affect up to 1 in 10,000 people)
Unknown (frequency cannot be estimated from available data)
If any of the above cases apply to you, inform your doctor immediately before taking the next clozapine tablet.
Other adverse effects:
Very common (affect more than 1 in 10 people)
Drowsiness, dizziness, increased saliva production.
Common (affect up to 1 in 10 people)
High levels of white blood cells in the blood (leukocytosis), high levels of a certain type of white blood cells in the blood (eosinophilia), weight gain, blurred vision, headache, tremors, rigidity, restlessness, agitation, seizures, sudden movements, abnormal movements, inability to initiate movement, inability to remain still, changes in the electrocardiogram (ECG) test of the heart, high blood pressure, weakness or mild headache after changing position, nausea (feeling dizzy), vomiting (being dizzy), loss of appetite, dry mouth, minor abnormalities in liver function tests, loss of bladder control, difficulty urinating, fatigue, fever, increased sweating, elevated body temperature, speech disorders (e.g., slurred words).
Uncommon (affect up to 1 in 100 people)
Low white blood cell count in the blood (agranulocytosis), speech disorder (e.g., stuttering).
Rare (affect up to 1 in 1,000 people)
High levels of red blood cells in the blood (anemia), restlessness, agitation, confusion, delirium, irregular heartbeat, inflammation of the heart muscle (myocarditis) or the membrane surrounding the heart muscle (pericarditis), fluid accumulation around the heart (pericardial effusion), high blood sugar levels, diabetes mellitus, blood clotting in the lungs (pulmonary embolism), liver inflammation (hepatitis), liver disease that causes yellowing of the skin/dark urine/itching, elevated levels in the blood of an enzyme called creatine phosphokinase.
Very rare (affect up to 1 in 10,000 people)
Increased platelet count in the blood with possible blood vessel clotting, uncontrolled movements of the mouth/tongue and lips, obsessive thoughts and repetitive compulsive behaviors (obsessive-compulsive symptoms), skin reactions, swelling of the face (due to inflammation of the salivary glands), difficulty breathing, very high levels of triglycerides or cholesterol in the blood, heart muscle disease (cardiomyopathy), cardiac arrest (cardiac arrest), sudden unexpected death.
Unknown (frequency cannot be estimated from available data)
Changes in brain wave recordings (electroencephalogram/EEG), diarrhea, stomach discomfort, heartburn, stomach discomfort after eating, muscle weakness, muscle spasms, muscle pain, nasal congestion, nocturnal enuresis, sudden and uncontrollable increase in blood pressure (pseudopheochromocytoma), involuntary contraction that causes the body to curve to one side (pleurothotonus), ejaculation disorder, in which semen enters the bladder instead of being ejaculated through the penis (dry orgasm or retrograde ejaculation), rash, purple-red spots, fever, or itching due to inflammation of blood vessels, colon inflammation that causes diarrhea, abdominal pain, fever, change in skin color, butterfly-shaped rash on the face, joint pain, muscle pain, fever, and fatigue (lupus erythematosus), restless legs syndrome (irresistible urge to move the legs or arms, usually accompanied by uncomfortable sensations during rest periods, especially in the afternoon or evening, and which is temporarily relieved by movement).
In elderly patients with dementia, a small increase in the number of death cases has been reported in patients taking antipsychotics compared to those who do not take them.
Reporting adverse effects
If you experience any type of adverse effect, consult your doctor or pharmacist, even if it is a possible adverse effect that is not listed in this leaflet. You can also report them directly through the Spanish Pharmacovigilance System for Human Use Medicines: https://www.notificaram.es. By reporting adverse effects, you can contribute to providing more information on the safety of this medication.
Keep this medication out of sight and reach of children.
Do not use clozapine after the expiration date shown on the packaging after CAD. The expiration date is the last day of the month indicated.
Store below 30 °C.
Bottle: the validity period after the first opening is 9 months.
Medicines should not be thrown down the drain or into the trash. Deposit the packaging and unused medication in the SIGRE collection point at the pharmacy. Ask your pharmacist how to dispose of the packaging and medication you no longer need. This will help protect the environment.
The active ingredient is clozapine.
Each tablet contains 100 mg of clozapine.
The other components are: lactose monohydrate, cornstarch, povidone, colloidal anhydrous silica, talc, and magnesium stearate.
Product Appearance and Packaging Content
Pale yellow, round, flat, film-coated tablets with beveled edges, engraved with "C" and "Z" on either side of the score line on one face and "100" on the other face. The tablets measure approximately 10 mm. The tablet can be divided into equal doses.
Blister packs: 20, 30, 40, 50, and 100 tablets.
Pre-scored unit dose blister packs: 20 x 1, 30 x 1, 40 x 1, 50 x 1, and 100 x 1 tablets.
Bottle: 30 tablets.
Only some pack sizes may be marketed.
Marketing Authorization Holder
Laboratorio STADA, S.L.
Frederic Mompou, 5
08960 Sant Just Desvern (Barcelona)
Spain
Manufacturer
STADA Arzneimittel AG
Stadastrasse 2 – 18
61118 Bad Vilbel
Germany
This medicinal product is authorized in the Member States of the European Economic Area under the following names:
Germany: Clozapin AL 100 mg Tabletten
Spain: Clozapina STADA 100 mg comprimidos EFG
France: CLOZAPINE EG LABO 100 mg, comprimé sécable
Hungary: Clozapine Stada 100 mg tabletta
Date of the last revision of this leaflet:June 2022
Detailed information on this medicinal product is available on the website of the Spanish Agency for Medicines and Health Products (AEMPS) https://www.aemps.gob.es/
The average price of CLOZAPINE STADA 100 mg TABLETS in November, 2025 is around 14.17 EUR. Prices may vary depending on the region, pharmacy, and whether a prescription is required. Always check with a local pharmacy or online source for the most accurate information.
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