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Magnesium Sulfate


Related terms
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    Related terms

      • It is used to stop and treat low magnesium levels.
      • It is used to treat a fast heartbeat.
      • It is used to treat high blood pressure during pregnancy.
      • It is used to treat seizures.
      • It is used to treat hard stools (constipation).
      • It is used to treat wounds.
      • It is used to stop early labor.
      • Magnesium is a diet aid.
      • It lowers the effects of chemicals on the heart. It slows the heart down.
      • It calms blood vessels, lowering blood pressure.
      • It softens the stool by raising its water content.
      • It works to lower the number of times the uterus contracts.


      How to take

      • Soaks:
      • Mix powder with water.
      • Soak a clean, white cloth with the solution.
      • Put the cloth on the affected part.
      • Soak affected part for 15 to 30 minutes.
      • Shot:
      • It is given as a shot into a muscle or vein.
      • It is given into a vein for a period of time.
      • Your doctor will give this drug.

      Missed Dose

      • Take a missed dose as soon as you think about it.
      • If it is close to the time for your next dose, skip the missed dose and go back to your normal time.
      • Do not take 2 doses at the same time or extra doses.


      • Store at room temperature.
      • Protect from water. Do not store in a bathroom or kitchen.
      • Shot:
      • This drug will be given to you in a hospital or doctor's office. You will not store it at home.



      • If you have an allergy to magnesium or any other part of this drug.
      • Tell your doctor if you are allergic to any drugs. Make sure to tell about the allergy and what signs you had. This includes telling about rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.
      • If you have a slow heartbeat without a working pacemaker.


      • Keep a list of all your drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your doctor.
      • If you have kidney disease, talk with your doctor.
      • If you have myasthenia gravis, talk with your doctor.
      • If you have nerve disease, talk with your doctor.
      • Check all drugs you are taking with your doctor. This drug may not mix well with some other drugs.
      • Tell your doctor if you are pregnant or plan on getting pregnant.
      • Tell your doctor if you are breast-feeding.

      Side Effects

      • Low blood pressure.
      • Irritation where the shot is given.
      • Loose stools (diarrhea).

      Contact a healthcare provider

      • If you think there was an overdose, call your local poison control center or ER right away.
      • Signs of a very bad reaction to the drug. These include wheezing; chest tightness; fever; itching; bad cough; blue or gray skin color; seizures; or swelling of face, lips, tongue, or throat.
      • Chest pain or pressure or a fast heartbeat.
      • Very bad dizziness or passing out.
      • Feeling very tired or weak.
      • Sudden change in eyesight.
      • Change in thinking clearly and with logic.
      • Very bad flushing.
      • Very bad itching.
      • Very bad swelling.
      • Very loose stools (diarrhea).
      • Very upset stomach or throwing up.
      • If seizures are worse or not the same after starting this drug.
      • Any rash.
      • Side effect or health problem is not better or you are feeling worse.

      General Statements

      • If you have a very bad allergy, wear an allergy ID at all times.
      • Do not share your drugs with others and do not take anyone else's drugs.
      • Keep all drugs out of the reach of children and pets.
      • Most drugs may be thrown away in household trash after mixing with coffee grounds or kitty litter and sealing in a plastic bag.
      • In Canada, take any unused drugs to the pharmacy. Also, visit to learn about the right way to get rid of unused drugs.
      • Keep a list of all your drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your doctor.
      • Call your doctor for help with any side effects. If in the U.S., you may also call the FDA at 1-800-FDA-1088 or if in Canada, you may also call Health Canada's Vigilance Program at 1-866-234-2345.
      • Talk with the doctor before starting any new drug, including OTC, natural products, or vitamins.

      Author information
      • Copyright © 1978-2013 Lexi-Comp Inc. All rights reserved.

      Copyright © 2011 Natural Standard (

      The information in this monograph is intended for informational purposes only, and is meant to help users better understand health concerns. Information is based on review of scientific research data, historical practice patterns, and clinical experience. This information should not be interpreted as specific medical advice. Users should consult with a qualified healthcare provider for specific questions regarding therapies, diagnosis and/or health conditions, prior to making therapeutic decisions.

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