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Discharge Instructions for Hypokalemia

You have been diagnosed with hypokalemia. This means you have a low level of potassium in your blood. Potassium helps your nerve and muscle cells work as they should. These cells include the cells in your heart. A low level of potassium in the blood can cause serious problems, such as abnormal heart rhythms and even a heart attack.

Diet changes

Eat more potassium-rich foods, such as:

  • Bananas.
  • Oranges and orange juice.
  • Tomatoes, tomato sauce, and tomato juice.
  • Leafy green vegetables, such as spinach, kale, salad greens, collards, and chard.
  • Melons (all kinds).
  • Pomegranates.
  • Peas.
  • Beans.
  • Potatoes.
  • Sweet potatoes.
  • Avocados, including guacamole.
  • Vegetable juices, such as V8.
  • Fruit juices.
  • All nuts and seeds.
  • Fish, including tuna, halibut, salmon, cod, snapper, haddock, swordfish, and perch.
  • Milk, including fat-free, low-fat, whole, chocolate, and buttermilk.
  • Soy milk.

Other home care

  • Take a potassium supplement as directed by your doctor.
  • After heavy exercise or any activity that causes you to sweat a lot, grab a beverage high in potassium. This includes chocolate milk, coconut water, orange juice, or low-sodium vegetable juices.
  • If you are vomiting or have diarrhea, be sure to drink fluids or eat foods that contain potassium.
  • Have your potassium levels checked regularly as directed.
  • Take all medicines exactly as directed.
  • Tell your doctor about all the prescriptions and over-the-counter medicines you are taking. This includes herbal products. Some water pills (diuretics) can cause you to lose potassium.
  • Don't have foods that are high in salt. Don't choose canned and prepared foods that are high in salt.

Follow-up

  • Make a follow-up appointment, as directed by your doctor.
  • Keep all follow-up appointments. Your doctor needs to watch your condition closely.

When to contact your doctor

Call 911if you have:

  • Rapid, irregular heartbeat.
  • Shortness of breath.
  • Chest pain.
  • Muscle cramps, spasms, or twitching.
  • Paralysis.

Contact your doctor right away if you have:

  • Vomiting.
  • Fatigue.
  • Diarrhea.
  • Weakness.
Online Medical Reviewer: Brittany Poulson MDA RDN CD CDE
Online Medical Reviewer: Heather M Trevino BSN RNC
Date Last Reviewed: 9/1/2025
© 2000-2026 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.
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