Potassium Contents

Potassium is an electrolyte (a substance that conducts electricity in the body) and is vital for maintaining normal heart rhythm; blood pressure; and muscle contraction, which makes it crucially important for normal digestive and muscular function.  Potassium levels can be altered by certain chemotherapy drugs and is a lab value often drawn when undergoing chemotherapy.

If your doctor detects your potassium levels are low, they may recommend a potassium supplement and eating potassium-rich foods.  Here is a list of potassium contents of foods to help guide you in making food choices:

Low-potassium Foods

(less than 150 mg potassium per ½ cup)

Fruits:  Apples, blueberries, cranberries, fruit cocktail, grapes, canned peaches, canned pears, pineapple

Vegetables:  Alfalfa sprouts, asparagus, bean sprouts, bell peppers, cabbage, raw celery, cucumbers, eggplant, green beans, green onions, kale, lettuce, raw mushrooms, radishes, turnips

Medium-potassium Foods

(150-250 mg potassium per ½ cup)

Fruits: banana (1/2), blackberries, cherries, grapefruit, kumquat, mandarin oranges, mangos, peaches, pears, plums, raspberries, strawberries, tangerines, watermelon

Vegetables: broccoli, carrots, cauliflower, chili peppers, corn, snow peas, raw spinach, squash, tomatoes

Misc: bran, milk

High-potassium Foods

(More than 250 mg potassium per ½ cup)

Fruits: apricots, bananas, cantaloupe, dried fruits, honeydew, nectarines, oranges, papaya, pomegranates, prunes, prune juice

Vegetables: artichokes, avocados, beans, beets, Brussels sprouts, Chinese cabbage, cooked mushrooms, all potatoes, pumpkins, cooked spinach, winter squash, Swiss chard, vegetable juice

Misc: blackstrap molasses, chocolate, coconut water, cod, lentils, nuts and seeds, peanut butter, salmon, yogurt


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