Medications used to treat schizophrenia and related disorders. Also called "neuroleptics." Includes both conventional antipsychotics such as chlorpromazine (Thorazine) and haloperidol (Haldol), and atypical antipsychotics such as risperidone (Risperdal), olanzapine (Zyprexa), quetiapine (Seroquel), and ziprasidone (Geodon).