Serious Side Effects Of Vasodilators

Rapid Heartbeat

An individual who takes vasodilators may experience tachycardia (a fast heartbeat). This side effect is reported in many individuals when they begin taking vasodilators, but it is also one that subsides after the body adapts to the medication. Vasodilators dilate the blood vessels throughout the body to treat heart failure or lower the blood pressure levels. As the blood vessels dilate, more blood is permitted to move through the arteries and veins. This mechanism causes a drop in blood pressure because the blood is not pushing against the vessel walls as hard. However, this decrease in blood pressure can be detected by the brain, which interprets it as a failure somewhere in the cardiopulmonary system. The brain attempts to compensate by telling the heart to speed up as a reaction to this change in blood pressure, which produces a rapid heartbeat.

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