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What is the highest dose of magnesium that I can take safely?

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Most people get more than enough magnesium from foods and do not need to take magnesium supplements. Excessive use of magnesium supplements can be toxic. In addition to what you get from food, the highest dose you should take of magnesium supplements is:

These doses are the highest somebody should add to his or her diet. Many people ingest significant quantities of magnesium through the foods they eat. It's safe to get high levels of magnesium naturally from food, but adding large amounts of supplements to your diet can prove dangerous. Do not exceed these maximum advised levels.

  • 65 mg/day for children ages 1-3
  • 110 mg/day for children ages 4-8
  • 350 mg/day for adults and children ages 9 and up

From: Magnesium WebMD Medical Reference

SOURCES: Longe, J., ed. , second edition, 2004. Office of Dietary Supplements: "Dietary Supplement Fact Sheet: Magnesium."

The Gale Encyclopedia of Alternative Medicine

UpToDate: "Causes of hypomagnesemia."

Reviewed by Carmen Patrick Mohan on June 7, 2017

SOURCES: Longe, J., ed. , second edition, 2004. Office of Dietary Supplements: "Dietary Supplement Fact Sheet: Magnesium."

The Gale Encyclopedia of Alternative Medicine

UpToDate: "Causes of hypomagnesemia."

Reviewed by Carmen Patrick Mohan on June 7, 2017

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Can you get magnesium naturally from foods?

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