Can stopping clozapine cause seizures?
Rachel Fowler
Updated on March 22, 2026
Can stopping clozapine cause seizures?
The possible mechanism in index case for seizure could be decreased GABA-ergic activity on abrupt discontinuation of clozapine. In the index case, episodes of seizures occurred only after abrupt discontinuation of clozapine, and hence, the possibility of clozapine withdrawal seizure cannot be ruled out completely.
Can clozapine cause seizures?
Results: The tonic-clonic variety is the most frequently described clozapine-induced seizure. Myoclonic and atonic seizures together constitute about one-quarter of the reported seizures. The mean dosage of clozapine associated with seizures is not high (less than 600 mg daily).
What are the withdrawal symptoms of clozapine?
Abrupt withdrawal of clozapine has been associated with symptoms of “cholinergic rebound,” including nausea, vomiting, hypersalivation, diarrhea, diaphoresis, insomnia, and agitation, as well as rapid onset of psychosis.
How long does it take to withdrawal from clozapine?
Within 1 to 4 days after stopping clozapine, 12 patients experienced mild agitation, headache, and/or nausea lasting as long as a week.
What happens if you stop clozapine abruptly?
Withdrawal syndromes from rapid discontinuation of clozapine are likely secondary to its mixed mechanism of action and pharmacokinetic properties. Abrupt discontinuation has been reported in the literature to cause rebound psychosis, cholinergic rebound, serotonin syndrome, and catatonia.
What helps antipsychotic withdrawal?
How easy is it to come off antipsychotics?
- It is safest to come off slowly and gradually. You should do this by reducing your daily dose over a period of weeks or months.
- Avoid stopping suddenly, if possible.
- Get support from people you trust.
What is the major side effect of clozapine?
Drooling, drowsiness, dizziness, lightheadedness, headache, shaking (tremor), vision problems (e.g., blurred vision), constipation, and weight gain may occur. Many of these effects (especially drowsiness) lessen as your body gets used to the medication.
What drugs lower the seizure threshold?
Medications that lower seizure threshold include the antidepressant and nicotinic antagonist bupropion, the atypical opioid analgesics tramadol and tapentadol, reserpine, theophylline, antibiotics (fluoroquinolones, imipenem, penicillins, cephalosporins, metronidazole, isoniazid) and volatile anesthetics.
How do you treat clozapine withdrawal?
If the discontinuation of treatment with clozapine is desired, it should be gradually tapered off over several weeks (50mg/week), rather than abruptly discontinued. Slow off-titration is preferred, if possible, to avoid withdrawal syndromes.
What happens when a schizophrenic stops medication?
If a person with schizophrenia stops taking his medications, he may experience a relapse of his symptoms. This sometimes happen when people feel that they have fully recovered and do not need the medications anymore. Relapses can also occur when people do not take their medications as directed.