Maprotiline poisoning: a case of cardiotoxicity and myoclonic seizures.

A 64-year-old man ingested 4500 mg of maprotiline hydrochloride. He developed major motor myoclonic seizures, first-degree AV block, intraventricular conduction delay, hypotension, and urinary retention. Myoclonic seizures have not been previously reported with maprotiline toxicity.