It is similar in action to verapamil.
1. relieves spasm of coronary artery
2. causes a decrease in the AV conduction
3. causes a decrease in the firing time of the sinus node pacemaker
4. decrease heart rate
5. cause a depressed blood pressure
It is used for
1. variant angina.
2. Atrial fibrillation/flutter
3. Raynaud’s syndrome
It undergoes hepatic metabolism.