Magnesium Glycinate

Last updated: May 29, 2026

Magnesium glycinate is magnesium bound to the amino acid glycine, a form many people choose because it is gentle on the stomach and well absorbed. Magnesium is an essential mineral involved in hundreds of enzyme reactions, including muscle and nerve function. The glycinate form is commonly used by people who get loose stools from cheaper oxide forms. This page is informational and not medical advice.

What dose of magnesium glycinate should you take?

The U.S. tolerable upper intake level for supplemental magnesium (from supplements, not food) is 350 mg per day for adults. Most magnesium supplements supply 100-350 mg of elemental magnesium per serving; check the label, because the elemental amount is lower than the total compound weight. Excess supplemental magnesium most often causes diarrhea. People with kidney disease should not supplement without medical supervision. This is general consensus guidance, not a personal dose recommendation.

• NIH Office of Dietary Supplements — Magnesium (Health Professional Fact Sheet)
• MedlinePlus (NIH) — Magnesium in diet

Which magnesium glycinate brands are third-party tested?

Informational only — not medical advice. Talk to a clinician or pharmacist before starting any supplement.