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You also might want to talk to your doctor about trying a different calcium channel blocker. The different drugs have slightly different actions and you may find one which does not cause edema. I am taking one called Tiazac which is a form of Cardezem and do not have problems with swelling.

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Different types of calcium-channel blockers

Different types of calcium-channel blocker differ in their main sites of action in the body. So, different types are used for different conditions.

Verapamil
This is commonly used to treat angina and high blood pressure. It is also used to treat certain arrhythmias (when the heart rate is abnormally fast). This is because it also blocks calcium going into the special conducting cells in the heart and so it can slow the heart rate. You should not take verapamil in addition to a beta-blocker medicine.

Diltiazem
This is used to treat angina and high blood pressure. Unlike verapamil it is not used to treat arrhythmias. It can be used in addition to beta-blockers if this combination is necessary.

As a rule, you should not take verapamil or diltiazem if you have heart failure. This is because they 'relax' the heart, and can make heart failure worse.

Dihydropyridine calcium-channel blockers
These include amlodipine, felodipine, isradipine, lacidipine, lercanidipine, nicardipine, nifedipine, nimodipine, and nisoldipine. These have more effect of relaxing blood vessels, and less effect of relaxing the heart muscle than verapamil or diltiazam. Most are used to treat high blood pressure and angina. But, isradipine, lacidipine, and lercanidipine are only used to treat high blood pressure. Nifedipine is also used to treat Raynaud's phenomenon.

As they do not affect heart muscle much, they are not useful for arrhythmias, and are unlikely to make heart failure worse. You can take one of these in addition to a beta-blocker. In fact, a dihydropyridine calcium-channel blocker in addition to a beta-blocker medicine is commonly used to prevent angina pains if either does not work well enough alone.