1. Citrus fruits. Citrus fruits, including grapefruit, oranges, and lemons, may have powerful blood-pressure-lowering effects. They're loaded with vitamins, minerals, and plant compounds that may help keep your heart healthy by reducing heart disease risk factors like high blood pressure ( 4 ).

Is it OK to eat grapefruit if you have high blood pressure?

Grapefruit contains compounds that may interfere with how your body absorbs some drugs, including some blood pressure medicines. It can leave too much or too little of the drug in your bloodstream, which may be dangerous.

Why is grapefruit bad for blood pressure?

Calcium channel blockers

They're used as part of the treatment of conditions such as high blood pressure (hypertension) and coronary heart disease. Grapefruit juice interacts with some calcium channel blockers and increases the level of the medicine in your blood.