Magnesium

Vitamins & MineralsCAS: 7439-95-4

This is what the ingredient is.

Magnesium is an essential mineral involved in over 300 enzyme reactions. Added to fortify some foods.

Here is why it shows up on the label.

It works as a nutrient. Found naturally in nuts, seeds, greens; added to some cereals and waters.

Here is what food agencies say.

US agencies treat it as an essential nutrient. European food agencies note: UL of 250 mg/day for supplemental magnesium (not from food).

Here is what research has found.

Essential for muscle, nerve, and bone health. Many people have suboptimal intake.

Here are a few things worth knowing.

High doses of supplements can cause diarrhea. Caution with kidney disease. Food sources well-tolerated.

Sources

  • FDA
  • NIH ODS

How to read this page

We publish plain facts about this ingredient so a label is easier to read. This is not medical advice, and it is not a recommendation to buy, avoid, or use anything. For a personal health question, talk with a clinician who knows your history.

v1.0Updated 9/12/2026