Clozapine 100mg Tablet
Clozapine is an atypical antipsychotic medication primarily used to treat schizophrenia, particularly in patients who do not respond to other antipsychotic treatments. It works by affecting the balance of neurotransmitters (dopamine and serotonin) in the brain.
- Recommended Usage
Indications
- Treatment-resistant schizophrenia (for patients who have not responded to at least two other antipsychotic medications)
- Schizoaffective disorder (as an adjunct treatment)
- Reduction of suicidal behavior in patients with schizophrenia or schizoaffective disorder
Dosage and Administration
Initial Dose: Typically, 12.5 mg once or twice daily (starting low to minimize side effects).
Maintenance Dose: After 1-2 days, increase to 25 mg/day, and gradually increase by 25-50 mg/day until an effective dose is reached.
The typical dose ranges from 300 mg to 450 mg per day, divided into one or more doses.
Maximum Dose: 900 mg/day, but doses above 450 mg/day should be titrated cautiously.
For elderly or patients with compromised renal/hepatic function: Use lower starting doses and increase gradually.
Precautions
Agranulocytosis: Clozapine can cause a serious drop in white blood cell count (agranulocytosis), which can be fatal. Blood counts (CBC) must be monitored regularly, especially during the first 6 months of treatment.
o Weekly blood tests are required for the first 6 months, then monthly thereafter.
Myocarditis and Cardiomyopathy: There is an increased risk of heart inflammation (myocarditis) and heart failure, which requires monitoring for symptoms like chest pain, palpitations, and fatigue.
Seizures: Clozapine lowers the seizure threshold, increasing the risk of seizures, particularly at higher doses. Dose adjustments may be needed.
Orthostatic hypotension: Can cause a significant drop in blood pressure, leading to dizziness or fainting, especially after the first dose.
Metabolic Effects: Clozapine can cause weight gain, hyperglycemia, dyslipidemia, and increased risk of diabetes. Regular monitoring of metabolic parameters is essential.
QT Prolongation: Clozapine may cause QT interval prolongation, so ECG monitoring is recommended, especially for patients with existing heart conditions.
Sedation: Can cause significant sedation, especially at higher doses, which can impair motor skills. Caution when performing tasks requiring concentration, such as driving.
