A 41-year-old man was admitted to the

hospital after he suffered a seizure with loss of consciousness while at home.

Two weeks earlier, the man was involved in a car accident and had suffered from

a closed head injury. A neurologic examination and an electroencephalogram led

to the discovery of an epileptic focus in the patient’s temporal lobe. The

neurologist ordered an anticonvulsant drug that most likely acts with multiple

mechanisms, including blockade

of T-type Ca

Which drug was most likely prescribed?