Calcium channel blockers are drugs used to lower blood pressure. They work by slowing the movement of calcium into the cells of the heart and blood vessel walls, which makes it easier for the heart to pump and widens blood vessels. As a result, the heart doesn’t have to work as hard, and blood pressure lowers.
Examples of calcium channel blockers include:
Potential side effects from taking a calcium channel blocker include:
Before taking a calcium channel blocker, tell your doctor:
Most calcium channel blockers can be taken with food or milk; however, ask your doctor. 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 the medicine will depend on the type of medication prescribed and on your condition. Avoid grapefruit juice while taking these medications, because grapefruit prevents the breakdown of the drug in the body.
Be sure to see your doctor on a regular basis to make sure the medicine is working as it should and isn’t causing any intolerable side effects. Your doctor may want to change the dosage if the drug isn’t having the intended effect.