Side Effects Of Calcium Channel Blockers

Lightheadedness And Dizziness

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An individual being treated with calcium channel blockers may experience lightheadedness and dizziness. The blood vessels in an affected individual's body expand and relax when calcium is unable to enter the cells that make up their lining and the muscle tissue of the heart. The electrical signals that trigger the contractions of the heart muscle do not move as quickly without the help of calcium. Therefore, calcium channel blockers are effective at lowering blood pressure and heart rate. Because an affected individual's body is not used to lower blood pressure, the physiological effects of a blood pressure drop may be more apparent when adjusting to the effects of calcium channel blockers. Low blood pressure can cause a reduction in the supply of oxygenated blood to an individual's brain, which is known to produce symptoms of dizziness and lightheadedness. Dizziness and lightheadedness that occur as a side effect of calcium channel blockers may be persistent or may dissipate after the first several weeks of taking the medication.

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