Commonly Used Brand Names in the United States
Adalat/Adalat CC (nifedipine)
Calan/Calan SR (verapamil)
Cardene/Cardene SR (nicardipine)
Cardizem (diltiazem)
Cartia XT (diltiazem)
Covera-HS (verapamil)
Dilacor XR (diltiazem)
Diltia XT (diltiazem)
DynaCirc/DynaCirc CR (isradipine)
Isoptin SR (verapamil)
Lotrel (amlodipine and benazepril)
Nifedical XL (nifedipine)
Nimotop (nimodipine)
Norvasc (amlodipine)
Plendil (felodipine)
Procardia/Procardia XL (nifedipine)
Sular (nisoldipine)
Tiazac (diltiazem)
Verelan/Verelan PM (verapamil)

Therapeutic Uses of Calcium Channel Blockers

Calcium channel blockers are used to treat:
• High blood pressure (hypertension)
• Chest pain (angina)
• Irregular heartbeats (arrhythmia)

How Calcium Channel Blockers Work
These medicines decrease the heart’s pumping strength and relax blood vessels by blocking the channels that allow calcium to move in and out of the heart muscle and blood vessels. The medicine becomes an obstacle that decreases the rate in which calcium moves. This mechanism relaxes the blood vessels and lowers blood pressure.


The information in this section is meant to provide a brief description of this medicine. It does not cover all of the possible uses, warnings, dosages, side effects, or interactions with other medicines and vitamin or herbal supplements. This information should not be used as medical advice for individual problems.


Texas Heart Institute
American Heart Association

Updated December 2009