Iatrogenic topiramate poisoning in an ICU patient: Focus on topiramate peak time prolongation.

A 35-year-old man with generalized insults was admitted to the intensive care unit because of third-line treatment of persistent epileptic insults with antiepileptic drug therapy. Topiramate was added on top of his outpatient regimen in combination with intravenous antiepileptic drugs. Miscommunication and inappropriate topiramate dosing (2,500 mg twice) resulted in an acute topiramate intoxication.