Antipsychotics and Seizure Risk

Seizure Risk by Antipsychotic Class

Clozapine has the highest risk of lowering seizure threshold among all antipsychotics, with approximately 5% incidence of seizures at high doses, according to the American Academy of Child and Adolescent Psychiatry 1
Thioridazine has been associated with increased seizure risk (adjusted odds ratio 1.78), as reported by the European Heart Journal 2
The American Academy of Child and Adolescent Psychiatry recommends that the risk for seizures with clozapine increases as the dose increases, especially if dosage changes are made rapidly 1

The American Academy of Child and Adolescent Psychiatry suggests that clozapine has the highest seizure risk among second-generation antipsychotics, with approximately 3-5% of patients experiencing seizures 1

Clozapine carries the highest seizure risk among all antipsychotics, with approximately 3-5% of patients experiencing seizures, increasing to 5% at high doses 3
Chlorpromazine has the greatest seizure risk among first-generation antipsychotics and should be avoided 4

Aripiprazole demonstrates lower likelihood of causing extrapyramidal symptoms and appears to have minimal seizure risk 4
Risperidone confers relatively low seizure risk when used at appropriate doses (≤6 mg/24h to minimize extrapyramidal side effects) 4
Haloperidol is associated with lower seizure risk and may be used cautiously 5, 4