Key Patient Counseling Points:
- Use sunscreen, avoid tanning beds.
- Report signs/symptoms of cardiac arrhythmias, pulmonary toxicity, or liver toxicity.
- Take consistently with regard to meals but avoid taking with grapefruit or grapefruit juice.
- Avoid sudden discontinuation.
Mechanism of Action:
Type III antiarrhythmic that prolongs the effective refractory period of atrial and ventricular tissue by blocking potassium conductance