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Supplement FAQ

Can magnesium upset your stomach?

Answer updated ยท Editorial policy

Quick answer

Magnesium can cause digestive changes, especially at higher doses or with forms commonly associated with stool effects. Citrate is often compared for digestion-oriented use, while glycinate is commonly compared for gentler tolerance. The label's elemental magnesium amount matters more than the front-label compound weight.

Label check

  • Magnesium form
  • Elemental magnesium
  • Tolerance and stool effects

Safety and when to get advice

  • Kidney disease changes magnesium safety.
  • Severe or persistent digestive symptoms should not be handled with supplements alone.

What the evidence can tell you

Research findings depend on the preparation, dose, population, and outcome studied. Ingredient evidence does not establish that every product works, and an absence of reported side effects cannot rule out uncommon reactions.

Sources and label references