mineral
Magnesium
Also known as: MgMagnesium is an essential dietary mineral involved in hundreds of enzymatic processes, including muscle and nerve function. Supplements use forms like glycinate, citrate, and oxide, which differ in how well the body absorbs them.
Educational reference only — not medical advice. These statements have not been evaluated by the FDA, and this information is not intended to diagnose, treat, cure, or prevent any disease. Talk to a healthcare provider before use.
Typical dose
The adult RDA is roughly 310–420 mg/day from all sources; supplement doses vary by form.
Onset
Dietary mineral — effects build with consistent intake rather than a single dose
Duration
Not applicable (taken as part of daily nutrition)
Legal status
Sold as a dietary supplement in the U.S. under DSHEA; no prescription required.
Common forms
CapsuleGummyPowderGlycinateCitrate
Safety
Generally safe from food. Supplemental magnesium — especially oxide and citrate — can cause a laxative effect and stomach upset at higher doses.
Interactions
Can reduce absorption of some antibiotics and other medications if taken together; separate the doses. Consult a healthcare provider if you have kidney disease.
Who should avoid
People with kidney disease should consult a healthcare provider before supplementing.
Sources
- National Institutes of Health, Office of Dietary Supplements. Magnesium — Fact Sheet for Health Professionals.
- Institute of Medicine. Dietary Reference Intakes for Calcium and Magnesium. 1997.