Sodium channel blocker

Sodium channel blockers are drugs which impair the conduction of sodium ions (Na+) through sodium channels. See also Sodium channel blocker.

Intracellular

Drugs which block sodium channels by blocking from the intracellular side of the channel include:

Local anesthetics: lidocaine

Class I antiarrhythmic agents

Various anticonvulsants: phenytoin, oxcarbazepine (derivative of carbamazepine)