Calcium channel blockers also called calcium antagonists are drugs which are used in the management of high blood pressure and also in heart conditions. Calcium channel blockers lower blood pressure by preventing calcium from entering the cells of your heart and arteries. Calcium causes the heart and arteries to contract more strongly. By blocking calcium, calcium channel blockers allow blood vessels to relax and open.
Some calcium channel blockers have the added benefit of slowing your heart rate, which can further lower your blood pressure, relieve chest pain (angina) and control an irregular heartbeat. Some of the most commonly used calcium channel blockers are; Amlodipine, Bepridil, Diltiazem, Felodipine, Nicardipine, Nifedipine, Nisoldipine, and Verapamil
Doctors Prescribe these medications for the High blood pressure, Coronary artery disease, Angina, Abnormal heart rhythms, etc.
Calcium channel blockers should be taken with food or milk. Follow the label directions on how often to take it. The number of doses you take each day, the time allowed between doses, and how long you need to take it will depend on the type of medication your doctor prescribed and why.
This drug works by altering certain processes in the body so this drug apart from producing the desired effects also produces many side effects.
Ten important side effects of calcium channel blockers are:
Side Effect 1: Lightheadedness
Lightheadedness is a common and typically unpleasant sensation of dizziness or a feeling that one may faint. The sensation of lightheadedness can be short-lived or prolonged. Causes of lightheadedness may be dehydration, medication side effects, sudden blood pressure drops, low blood sugar, and heart disease or stroke. Lightheadedness is the most common side effect associated with use of calcium channel blockers.