“Magnesium Glycinate?”Here!
Hasn’t appeared in a scanned product yet.
As a supplement
Talk to your doctor or pharmacist.
Roll Call does not check drug interactions or assess personal safety.
Magnesium bound to the amino acid glycine, one of several magnesium forms used in supplements.
Why it’s used
Taken to add to dietary magnesium intake.
What the evidence is for
correcting magnesium deficiency.
What the evidence says
Supplementation corrects magnesium deficiency. Beyond repletion the evidence is mixed — modest blood-pressure effects and some support for migraine prevention, with conflicting results for blood-sugar control. The NIH fact sheet does not evaluate the glycinate form specifically; common claims that it is better absorbed or gentler on the stomach than other forms are not established there.
Dose studied
up to 350 mg — supplemental tolerable upper intake level is 350 mg/day; adult RDA from all sources is 310–420 mg, per NIH ODS. No lower bound is set because diet contributes most intake..
Context
The adult RDA (from all sources, food included) is 310–420 mg. The tolerable upper intake level for magnesium from supplements alone is 350 mg/day; more than that commonly causes diarrhea.
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.
Not gradedhealth and safety evidence
Sources cited — no verdict reached.
What was measured is not yet noted.
- 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.