“Magnesium?”Here!
Appears in 1 scanned product.
As a supplement
Talk to your doctor or pharmacist.
Roll Call does not check drug interactions or assess personal safety.
A mineral involved in hundreds of enzyme reactions in the body, present in foods like leafy greens, nuts, and whole grains, and added to supplements as various magnesium salts.
Why it’s used
Taken to support muscle, nerve, and bone function, and to help meet daily intake when diet is low in magnesium-rich foods.
What the evidence is for
correcting magnesium deficiency and supporting normal nerve and muscle function.
What the evidence says
NIH ODS states magnesium's role in normal physiological function is well established, and supplementation is understood to correct deficiency where it exists. Evidence for benefits from supplementation in people who are not deficient — for things like sleep or cramps — is more limited and mixed.
Dose studied
310–420 mg — RDA range for adult men and women, per NIH ODS.
Context
Studies on magnesium and outcomes such as blood pressure or glucose control mostly enroll people with low baseline magnesium status, which limits how the findings generalize to a well-nourished population.
Rumors
Correcting magnesium deficiency, which starts as loss of appetite, nausea, fatigue and weakness and can progress to numbness, cramps, seizures and abnormal heart rhythms.
Supports — establishedhealth and safety evidence
Measured as an outcome.
- Office of Dietary Supplements - Magnesium (Regulatory) · Funding not checked
How much is a reference amount
- 310 mg a dayfor adults 19–30, women · Recommended Dietary Allowance
Upper limit 350 mg a day, from supplements only — it does not apply to the same nutrient in food.
- 400 mg a dayfor adults 19–30, men · Recommended Dietary Allowance
Upper limit 350 mg a day, from supplements only — it does not apply to the same nutrient in food.
- 320 mg a dayfor adults 31–50, women · Recommended Dietary Allowance
Upper limit 350 mg a day, from supplements only — it does not apply to the same nutrient in food.
- 420 mg a dayfor adults 31–50, men · Recommended Dietary Allowance
Upper limit 350 mg a day, from supplements only — it does not apply to the same nutrient in food.
- 320 mg a dayfor adults 51–70, women · Recommended Dietary Allowance
Upper limit 350 mg a day, from supplements only — it does not apply to the same nutrient in food.
- 420 mg a dayfor adults 51–70, men · Recommended Dietary Allowance
Upper limit 350 mg a day, from supplements only — it does not apply to the same nutrient in food.
- 320 mg a dayfor adults 71 and over, women · Recommended Dietary Allowance
Upper limit 350 mg a day, from supplements only — it does not apply to the same nutrient in food.
- 420 mg a dayfor adults 71 and over, men · Recommended Dietary Allowance
Upper limit 350 mg a day, from supplements only — it does not apply to the same nutrient in food.
The 350 mg upper limit is LOWER than the recommended intake, and that is not a contradiction: the UL applies only to supplemental magnesium, while the RDA counts magnesium from food as well. It is the clearest case in the corpus for why a limit without its scope is unusable.
Every applicable line is shown because we don’t know which one is yours, and a reference intake is a target for a population, not a threshold for harm.