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Discharge Instructions for Hypomagnesemia

You have been diagnosed with hypomagnesemia. This means you don't have enough magnesium in your blood. Magnesium is a mineral. It helps your body work normally. It helps you form bones. It helps muscles and nerves work. And it helps enzymes and hormones work. A very low magnesium level can be serious and lead to seizures and abnormal heart rhythms. And it can lead to a heart attack. Other symptoms can include:

  • Nausea or vomiting.
  • Sleepiness.
  • Weakness.
  • Personality changes.
  • Muscle spasms or tremors.
  • Loss of appetite.

Diet changes

You'll need to eat more foods that contain magnesium. These include:

  • Dark green leafy vegetables, such as salad greens, spinach, kale, chard, and collards.
  • All nuts and nut butters, including peanuts, almonds, pecans, cashews, Brazil nuts, macadamia nuts, peanut butter, and almond butter.
  • Sunflower seeds.
  • Pumpkin seeds.
  • Milk, chocolate milk (prepared from powder mix), and eggnog.
  • Soy products, including tofu, soybeans, and soy milk.
  • Beans.
  • Halibut.
  • Baked potatoes (with skin).
  • Millet, including puffed millet cereal.
  • Brown rice, including brown rice cakes.
  • Avocado, including guacamole.
  • Dried apricots.
  • Bananas.
  • Oatmeal.
  • Bran cereals.
  • Chocolate and cocoa powder.
  • Meal replacement bars and drinks.

Other home care

  • Take a magnesium supplement as advised.
  • Have your magnesium levels checked as often as advised. This is important if you are taking a diuretic. This medicine helps flush water from the body.
  • Tell your doctor about all the medicines and herbal supplements you take. This includes prescribed and over-the-counter medicines. Some of them can lower your magnesium levels.
  • Take all medicines as directed.
  • Take your pulse as often as advised. Call your doctor if your pulse rate is higher than 100 beats a minute, or as directed.
  • Ask if you need to take a calcium supplement. If your magnesium level is low, you may be low in calcium.

Follow-up

Follow up with your doctor, or as advised. Your doctor will need to watch your condition closely. You may need extra care if you have a health condition that causes your hypomagnesemia.

When to call for help

Contact your doctor right away or call 911if you have:

  • Muscle twitching, spasms, or cramps.
  • Fatigue.
  • Confusion.
  • Loss of consciousness or fainting.
  • Dizziness.
  • Irregular or fast heartbeat.
  • Chest pain or shortness of breath.
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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