Harvard Heart Letter

Should I take a potassium supplement?

Ask the doctor

potassium melon
A cup of cantaloupe contains about 400 mg of potassium.
Image: Arisara_Tongdonnoi / Thinkstock

Q. I have high blood pressure, and a friend recommended that I take a potassium supplement. Is that a good idea, and if so, how much should I take?

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