Sizopin 100mg Tablet (Clozapine): Complete Medicine Guide
Clinical Reference Standards: CDSCO (Central Drugs Standard Control Organisation), Indian Pharmacopoeia (IP) & WHO | Last Updated: September 2026
When to Call Your Doctor IMMEDIATELY
- Fever, sore throat, mouth ulcers, or unusual tiredness, which may be signs of a severe drop in white blood cells.
- Chest pain, fast or irregular heartbeat, shortness of breath, or fever, which may be signs of heart inflammation.
- Severe abdominal pain, vomiting, or no bowel movement for more than two days, which may be signs of bowel blockage.
- High fever, severe muscle stiffness, confusion, sweating, or fast heartbeat, which may be signs of neuroleptic malignant syndrome.
- Seizures or loss of consciousness.
- Yellowing of the skin or eyes, dark urine, or severe tiredness, which may be signs of liver problems.
- Sudden swelling, pain, or redness in a leg, or sudden shortness of breath or chest pain, which may be signs of a blood clot.
- Thoughts of harming yourself or others, or a sudden worsening of mental health symptoms.
If experiencing severe symptoms, call emergency services immediately.
What is lozin 100mg tablet used for?
This medicine contains clozapine 100 mg and is used to treat schizophrenia in people who have not responded to other antipsychotic medicines. It works by balancing chemicals in the brain. It requires regular blood tests because it can cause a serious drop in white blood cells. It must only be taken under specialist supervision and never stopped suddenly.
- Generic Name: Clozapine (100mg)
- Manufacturer: Pifer Pharmaceuticals Pvt Ltd
- Form: Allopathy
- Pregnancy Category: Consult doctor
- Prescription Required: Yes
🇮🇳 lozin 100mg tablet के बारे में (Hindi Summary)
उपयोग: यह दवा क्लोज़ापाइन 100 मिलीग्राम की गोली है और इसे मुँह से लिया जाता है। यह मुख्य रूप से सिज़ोफ्रेनिया के इलाज के लिए दी जाती है, खासकर उन लोगों में जिन्हें दूसरी एंटीसाइकोटिक दवाओं से फायदा नहीं हुआ है। यह दिमाग में डोपामिन और सेरोटोनिन जैसे रसायनों को संतुलित करके मतिभ्रम, भ्रम और सोचने-समझने की समस्या को कम करने में मदद करती है। यह दवा केवल मनोचिकित्सक की देखरेख में ही शुरू की जानी चाहिए और इसके साथ नियमित खून की जाँच बहुत ज़रूरी है। इसे अचानक बंद नहीं करना चाहिए।
साइड इफेक्ट्स: आम दुष्प्रभावों में नींद आना, चक्कर आना, मुँह में लार बढ़ना, दिल की धड़कन तेज़ होना, कब्ज़, मुँह सूखना, धुंधला दिखना, वजन बढ़ना और खड़े होने पर ब्लड प्रेशर कम होना शामिल हैं। गंभीर दुष्प्रभावों में सफेद रक्त कोशिकाओं का खतरनाक रूप से कम होना, दिल की मांसपेशियों में सूजन, दौरे पड़ना, गंभीर कब्ज़ से आंत का बंद होना, ब्लड शुगर बढ़ना और न्यूरोलेप्टिक मैलिग्नेंट सिंड्रोम शामिल हैं। इसलिए नियमित खून की जाँच कराना बहुत ज़रूरी है।
सुरक्षा सलाह: यह दवा केवल योग्य मनोचिकित्सक की देखरेख में ही लें। सफेद रक्त कोशिकाओं की जाँच के लिए नियमित खून की जाँच कराना अनिवार्य है, और यह जाँच दवा बंद करने के चार हफ्ते बाद तक जारी रखनी चाहिए। इस दवा को अचानक बंद न करें, क्योंकि इससे गंभीर लक्षण या मानसिक स्थिति फिर से बिगड़ सकती है। शराब और नींद लाने वाली दूसरी दवाओं से बचें। बैठने या लेटने से धीरे-धीरे उठें। बुखार, गले में दर्द, मुँह के छाले, असामान्य थकान, सीने में दर्द, तेज़ धड़कन या गंभीर कब्ज़ होने पर तुरंत डॉक्टर को बताएं।
💊 lozin 100mg tablet Uses & Benefits
[{"condition":"Treatment-resistant schizophrenia","description":"This medicine is used for people with schizophrenia who have not improved with at least two other antipsychotic medicines or who cannot tolerate them.","evidence":"Well-established"},{"condition":"Reduction of suicidal behaviour in schizophrenia or schizoaffective disorder","description":"This medicine may help reduce the risk of repeated suicidal behaviour in people with schizophrenia or schizoaffective disorder.","evidence":"Well-established"},{"condition":"Psychosis in Parkinson's disease","description":"Sometimes used when other treatments are not suitable, but it requires very careful specialist supervision.","evidence":"Limited"}]
Off-label uses: [{"condition":"Severe bipolar disorder with treatment resistance","description":"Occasionally prescribed off-label by specialists when other mood stabilisers and antipsychotics have failed.","evidence":"Limited"},{"condition":"Severe aggression in certain psychiatric conditions","description":"May be considered off-label in highly selected cases under specialist care.","evidence":"Limited"}]
Primary treatment for: Treatment-resistant schizophrenia
Also treats: Schizoaffective disorder with suicidal behaviour, Psychosis in Parkinson's disease
📋 Drug Information
| Generic Name(s) | Clozapine (100mg) |
| Brand Name | lozin 100mg tablet |
| Manufacturer | Pifer Pharmaceuticals Pvt Ltd |
| Packaging / Form | Varies by brand (Allopathy) |
| Therapeutic Class | NEURO CNS |
| Action Class | Atypical Antipsychotics |
| Route of Administration | Oral |
| Storage | Store at room temperature between 15°C and 30°C in a dry place. Keep the tablets in their original container with the lid tightly closed. Protect from light and moisture. Keep out of reach of children and pets. |
| Shelf Life | The shelf life is usually 24 months from the date of manufacture. Check the expiry date on the pack before use. Do not use the medicine after the expiry date. |
| WHO Guideline | Clozapine is included in the World Health Organization Model List of Essential Medicines for the treatment of schizophrenia. It is recommended for people with treatment-resistant schizophrenia under specialist supervision with regular blood monitoring. |
| ICMR Guideline | Indian guidelines recommend clozapine for treatment-resistant schizophrenia under specialist supervision with compulsory regular blood monitoring. It should be started at a low dose and increased slowly, with close monitoring for blood, heart, and metabolic side effects. |
👨⚕️ Doctor's Practical Tips
Evidence-based practical advice from experienced clinicians
🔍 Is This Medicine Right for Your Symptom?
Educational reference. Always consult a doctor for diagnosis.
🔬 How This Medicine Works (Pharmacology)
Pharmacokinetics
How It Works
This medicine works by blocking several dopamine receptors, especially D4 and D2 receptors, and serotonin 5-HT2A receptors in the brain. It also affects muscarinic, histamine, and alpha-adrenergic receptors. This broad action helps control hallucinations, delusions, and disorganised thinking while causing fewer movement-related side effects than older antipsychotics. However, the same broad action explains many of its side effects, such as drowsiness, increased salivation, constipation, and low blood pressure.
Mechanism Steps
💡 How to Take lozin 100mg tablet
Strength: This medicine is available as an immediate-release tablet containing 100 mg of clozapine.
Dosage Information
| Adult Dosage | The starting dose is usually 12.5 mg once or twice daily, and the dose is increased slowly over days to weeks under specialist supervision. The usual target dose is 200 mg to 450 mg per day, divided into two or three doses, but some people may need up to 900 mg per day. Dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function, smoking status, and response to treatment. Never change the dose without medical advice. |
| Pediatric Dosage | Pediatric dosing is not established from available information. Consult a pediatric psychiatrist. |
| Elderly Dosage | Older adults usually start at a lower dose, such as 12.5 mg once daily, and the dose is increased more slowly. Older adults are more sensitive to side effects such as drowsiness, dizziness, low blood pressure, and constipation. Dose must be individualized by a qualified clinician based on age, weight, renal and hepatic function, and other medicines. |
| Renal Impairment | This medicine is mainly broken down in the liver, so kidney problems usually do not require a dose change. However, if you have severe kidney problems, your doctor may start at a lower dose and increase it slowly. Dose must be individualized by a qualified clinician based on renal function and overall health. |
| Hepatic Impairment | If you have liver problems, this medicine should be used with caution. Your doctor may start at a lower dose and increase it slowly, and may check your liver function regularly. Dose must be individualized by a qualified clinician based on hepatic function and overall health. |
| Maximum Daily Dose | The maximum daily dose is usually 900 mg per day, but doses above 450 mg per day are only used in special situations under close specialist supervision. |
Dosage Timeline
🍽️ Food Timing Guide
⏰ What to Do If You Miss a Dose
⚠️ Side Effects of lozin 100mg tablet
✅ Common Side Effects
🚨 Serious Side Effects
⚠️ Rare Side Effects
Consult your doctor if you experience any unusual symptoms.
🔬 Drug Interactions
| Drug | Severity | Effect |
|---|---|---|
| Ciprofloxacin | Major | |
| Carbamazepine | Major | |
| Benzodiazepines | Moderate | |
| Alcohol | Moderate | |
| Caffeine | Moderate | |
| Blood pressure medicines | Moderate | |
| Antacids | Minor | |
| Tobacco smoking | Minor |
🚨 Major Interactions
- Other medicines that suppress bone marrow
- Ciprofloxacin and other strong CYP1A2 inhibitors
- Carbamazepine
- Risperidone and other antipsychotics
⚡ Moderate Interactions
- Benzodiazepines such as diazepam
- Alcohol
- Blood pressure medicines
- Caffeine
🍷 Alcohol Interaction
Alcohol should be avoided while taking this medicine. Combining them can cause severe drowsiness, dizziness, low blood pressure, and difficulty thinking clearly. It can also worsen mental health symptoms and increase the risk of falls and accidents.
🔎 Check Your Other Medicines
Educational tool. Always confirm with your doctor or pharmacist.
🛡️ Safety & Warnings
🚫 Contraindications
["Previous severe blood disorder such as agranulocytosis or bone marrow problems.","Uncontrolled epilepsy or a history of seizures that is not well controlled.","Certain heart problems, including recent heart attack or severe heart failure.","Severe liver or kidney problems.","Paralytic ileus or severe bowel blockage.","Known allergy to clozapine or any ingredient in this medicine.","Use with other medicines that suppress bone marrow."]
⚠️ Warnings & Precautions
["This medicine can cause a severe drop in white blood cells called agranulocytosis. Regular blood tests are compulsory.","This medicine can cause inflammation of the heart muscle called myocarditis. Report chest pain, fast heartbeat, or shortness of breath immediately.","This medicine can cause seizures, especially at higher doses. Do not drive or swim until you know how it affects you.","This medicine can cause severe constipation that may lead to bowel blockage. Drink plenty of water and eat fibre-rich foods.","This medicine can cause high blood sugar and high cholesterol. Your doctor will monitor your weight and blood tests.","This medicine can cause low blood pressure when standing up. Rise slowly from sitting or lying down.","Do not stop this medicine suddenly. Stopping suddenly can cause severe withdrawal symptoms or a rapid return of psychosis.","This medicine can cause drowsiness. Avoid driving or operating machinery until you know how it affects you.","Tell your doctor if you smoke or if you plan to stop smoking, because your dose may need to be adjusted.","Tell your doctor about all other medicines you take, including herbal products and over-the-counter medicines."]
🤱 Lactation Safety
This medicine passes into breast milk and can cause drowsiness and other side effects in a breastfed baby. Breastfeeding is generally not recommended while taking this medicine unless a specialist decides the benefits clearly outweigh the risks. Discuss feeding options with your doctor.
💊 Overdose Management
Overdose of this medicine can cause severe drowsiness, confusion, fast heartbeat, low blood pressure, seizures, and coma. If you suspect an overdose, call emergency services immediately or go to the nearest emergency department. Do not try to treat yourself at home. Take the medicine pack with you so that medical staff know exactly what you have taken.
⏰ Missed Dose
If you miss a dose, take it as soon as you remember, unless it is almost time for your next dose. If it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not take two doses at the same time to make up for a missed dose. If you miss more than one dose, contact your doctor before restarting, because your dose may need to be adjusted.
Additional Safety Advice
This medicine must only be taken under the supervision of a qualified psychiatrist. Regular blood tests are compulsory to check your white blood cell count, and these tests must continue as long as you take this medicine and for at least four weeks after stopping it. Never stop this medicine suddenly, because doing so can cause severe withdrawal symptoms or a rapid return of psychosis. Avoid alcohol and other medicines that cause drowsiness. Rise slowly from sitting or lying down to prevent dizziness. Report any fever, sore throat, mouth ulcers, unusual tiredness, chest pain, fast heartbeat, or severe constipation immediately. Keep all follow-up appointments and do not share this medicine with anyone else.
👴 Special Considerations for Elderly
💡 For Patients Above 65
Older adults are more sensitive to the side effects of this medicine, including drowsiness, dizziness, low blood pressure, constipation, and confusion. The starting dose is usually lower and increased more slowly. This medicine should be used with caution in elderly people with dementia, because it may increase the risk of serious side effects, including death. Regular monitoring of blood counts, heart function, and metabolic parameters is especially important.
🤰 Pregnancy Planning (TTC)
If you are planning pregnancy, speak to your psychiatrist before you conceive. This medicine should be used during pregnancy only if the potential benefit clearly outweighs the potential risk. It can cause problems for the baby, including sedation and blood problems. Do not stop this medicine suddenly on your own. Your doctor will discuss the risks and benefits and may adjust your treatment plan.
🏥 Post-Surgery Considerations
Tell your surgeon and anaesthetist that you are taking this medicine before any surgery. This medicine can interact with anaesthetic medicines and can affect blood pressure and heart rate during surgery. Your doctor may need to adjust your dose or monitor you more closely. Do not stop this medicine before surgery unless your doctor tells you to.
🦷 Dental Procedures
Tell your dentist that you are taking this medicine before any dental procedure. This medicine can cause dry mouth, which may increase the risk of tooth decay and gum problems. It can also cause drowsiness and low blood pressure. Your dentist may take extra precautions and may recommend more frequent dental check-ups.
💚 Lifestyle Tips for Better Results
🏋️ Exercise Considerations
This medicine can cause drowsiness, dizziness, and low blood pressure when standing up. Avoid heavy lifting, strenuous exercise, or activities that require balance until you know how this medicine affects you. Rise slowly from sitting or lying down. If you feel dizzy or faint during exercise, stop immediately and sit or lie down. Talk to your doctor before starting a new exercise programme.
🥗 Diet Recommendations
💼 Impact on Daily Work & Life
This medicine can cause drowsiness, dizziness, and difficulty concentrating, especially when you first start taking it or when your dose is increased. Avoid driving, operating heavy machinery, or doing activities that require full alertness until you know how this medicine affects you. You may need to take time off work or adjust your work schedule during the first few weeks. Regular blood tests and follow-up appointments may also affect your work routine. Discuss any work-related concerns with your doctor.
🛑 When to Stop This Medicine
Do not stop this medicine on your own. Stopping suddenly can cause severe withdrawal symptoms or a rapid return of psychosis. If you and your doctor decide to stop this medicine, the dose will usually be reduced slowly over several weeks. Blood tests must continue for at least four weeks after stopping. Contact your doctor immediately if you develop fever, sore throat, chest pain, or any other serious symptom.
📅 Long-Term Use Effects
Long-term use of this medicine requires regular monitoring of white blood cells, weight, blood sugar, cholesterol, and heart function. Some people may develop metabolic problems such as diabetes and high cholesterol, or a heart condition called cardiomyopathy. Regular follow-up with your psychiatrist and other specialists is important. Do not stop the medicine on your own, because stopping suddenly can cause a relapse of psychosis.
🌿 Non-Medicine Approaches
These can complement medicine but do not replace prescribed treatment.
Cognitive behavioural therapy for psychosis can complement medicine and help you cope with symptoms.
Evidence: Well-establishedEducating family members about schizophrenia and treatment can improve support and outcomes.
Evidence: Well-establishedRegular exercise, healthy diet, and good sleep can improve overall mental and physical health.
Evidence: Well-establishedSupport with work and daily activities can help you return to a normal routine.
Evidence: Limited💉 Vaccination Considerations
💉 If You're Getting Vaccinated
There are no specific vaccine interactions with this medicine. However, because this medicine can affect white blood cells, talk to your doctor before receiving any live vaccines. Keep your vaccinations up to date as advised by your doctor.
📦 Storage Guide
✅ DO
Store at room temperature between 15°C and 30°C in a dry place.
❌ DON'T
Do not store in the bathroom or near a sink.
✅ DO
Keep the tablets in their original container with the lid tightly closed.
❌ DON'T
Do not transfer the tablets to unmarked containers.
✅ DO
Keep away from direct sunlight and heat.
❌ DON'T
Do not refrigerate unless your pharmacist tells you to.
✅ DO
Keep out of reach of children and pets.
❌ DON'T
Do not use the medicine after the expiry date.
✈️ Traveling with This Medicine
Carry this medicine in its original packaging with the prescription label clearly visible. Take a copy of your prescription and a letter from your psychiatrist explaining why you need this medicine, especially for international travel. Carry enough medicine for your entire trip plus extra in case of delays. Keep the medicine in your hand luggage, not in checked baggage. Store it at room temperature and protect it from heat and moisture. If you are crossing time zones, ask your doctor how to adjust your dose times. Do not stop or change your dose while travelling without medical advice.
💰 Cost Analysis & Savings
👥 Real Patient Stories
Educational, anonymized scenarios. Individual results may vary.
💬 Questions Patients Often Ask
A: Some calming effect may be noticed within a few days, but full benefit usually takes several weeks. Your doctor will increase the dose slowly and monitor your response.
A: This medicine can cause a severe drop in white blood cells called agranulocytosis. Regular blood tests help detect this early, before it becomes dangerous.
A: No. Stopping suddenly can cause severe withdrawal symptoms or a rapid return of psychosis. Always speak to your doctor before stopping.
A: No. Alcohol can cause severe drowsiness, dizziness, low blood pressure, and worsen mental health symptoms.
A: Weight gain is common with this medicine. Your doctor will check your weight, blood sugar, and cholesterol regularly. A healthy diet and regular exercise can help.
A: Contact your doctor immediately. Fever, sore throat, or mouth ulcers may be signs of a severe drop in white blood cells and need urgent blood tests.
🤔 Common Patient Concerns
🔄 Substitutes for lozin 100mg tablet
View AllAlternative brands with exact same active ingredient:
-
clonex 100mg tabletTheo Pharma Pvt Ltd ₹43.31 7.6% CHEAPER
-
cozacin 100mg tabletCinerea Biotech Pvt Ltd ₹45.00 4% CHEAPER
-
zopizone 100mg tabletKC Laboratories ₹47.18 0.6% COSTLIER
-
syzopin 100mg tabletPsycormedies ₹51.19 9.2% COSTLIER
-
soloquin 100 mg tabletUSV Ltd ₹53.44 14% COSTLIER
Medical Note: Always consult your doctor before switching medications.
🛑 Myths vs. Facts
- Myth: This medicine is just like other antipsychotics and can be taken without blood tests.
Fact: This medicine is different because it can cause a severe drop in white blood cells. Regular blood tests are compulsory for as long as you take it and for four weeks after stopping. - Myth: Once you feel better, you can stop this medicine on your own.
Fact: Never stop this medicine suddenly. Stopping suddenly can cause severe withdrawal symptoms or a rapid return of psychosis. Always speak to your doctor first. - Myth: This medicine is only for severe mental illness and will make you sleepy forever.
Fact: This medicine is used for treatment-resistant schizophrenia. Drowsiness is common at first but often improves with time. Your doctor will adjust the dose to balance benefit and side effects. - Myth: This medicine can be taken with alcohol to help you sleep.
Fact: Alcohol should be avoided completely while taking this medicine. It can cause severe drowsiness, dizziness, low blood pressure, and worsen mental health symptoms.
🔄 Alternative Options
Generic Alternatives
- Clozapine 100 mg tablet
Brand Alternatives
- Sizopin 100mg Tablet