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What foods and medicines should I avoid if I take a calcium channel blocker?

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  • Grapefruits and grapefruit juice can affect the action of many of the calcium channel blockers. Ask your doctor or pharmacist whether your calcium channel blocker is affected by grapefruit juice.
  • Do not drink alcohol while taking a calcium channel blocker. Alcohol interferes with the effects of the drug and increases the side effects.
  • Taking other blood pressure medications in combination with a calcium channel blocker may cause a sudden drop in blood pressure. Discuss with your doctor the best way to take the medication if you are taking other drugs.

SOURCES: American Heart Association. Consumer Reports.

Reviewed by James Beckerman on October 10, 2017

SOURCES: American Heart Association. Consumer Reports.

Reviewed by James Beckerman on October 10, 2017

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