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Generic Name: magnesium gluconate (mag NEE see um GLOO koe nate)
Brand Names: Mag-G, Magonate, Magonate Natal, Magtrate
Magnesium is important for many systems in the body, especially the muscles and nerves. Includes magnesium side effects, interactions and indications.
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Drug Information:
Magnesium is a naturally occurring mineral. It is important for many systems in the body, especially the muscles and nerves. Magnesium gluconate is used as a supplement to treat low levels or to maintain adequate levels of this mineral in the body. Magnesium gluconate may also be used for purposes other than those listed in this medication guide. Before using this medication, tell your doctor if you are pregnant or breast-feeding. Use this medication exactly as directed on the label, or as it has been prescribed by your doctor. Do not use the medication in larger amounts, or use it for longer than recommended. Learn more

Magnesium Side Effects

Magnesium gluconate Side Effects

For the Consumer

Applies to magnesium gluconate: oral tablet

What are some side effects that I need to call my doctor about right away?

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:

  • Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
  • Very upset stomach or throwing up.
  • Severe diarrhea.

What are some other side effects of this drug?

All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:

  • Diarrhea.

These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.

You may report side effects to the FDA at 1-800-FDA-1088. You may also report side effects at http://www.fda.gov/medwatch.

For Healthcare Professionals

Applies to magnesium gluconate: compounding powder, oral liquid, oral tablet


Symptoms of magnesium toxicity include hypotension, nausea, vomiting, flushing, urinary retention, ileus, depression, and lethargy, which may progress to muscle weakness, dyspnea, extreme hypotension, arrhythmia, and cardiac arrest.


Frequency not reported: Hypotension, extreme hypotension, arrhythmia, cardiac arrest


Frequency not reported: Diarrhea, upset stomach, stomach cramps, vomiting, nausea, ileus

Nervous system

Frequency not reported: Dizziness


Frequency not reported: Muscle weakness


Frequency not reported: Depression


Frequency not reported: Dyspnea


Frequency not reported: Lethargy


Frequency not reported: Flushing of skin, facial flushing


Frequency not reported: Urinary retention

Editorial References and Review

Medically reviewed by BestRx Medical Team Last updated on 1/1/2020.

Source: Drugs.com Magnesium