Mibefradil

Mibefradil (Posicor) is a drug for the treatment of hypertension and chronic angina pectoris. It belongs to a group known as calcium channel blockers.

The mechanism of action of mibefradil is characterized by the selective blockade of transient, low-voltage-activated (T-type) calcium channels over long-lasting, high-voltage-activated (L-type) calcium channels, which is probably responsible for many of its unique properties.