This Natural Factors **magnesium glycinate** delivers a full 200mg of elemental magnesium per capsule, a well-absorbed, gentle form that supports sleep, muscle relaxation, and everyday calm. That 200mg is the actual usable magnesium, not the heavier compound weight some labels list, and it sits squarely in the 100–400mg range research uses for these goals. Take one or two capsules daily and you're getting 200–400mg, covering the full effective supplemental range.
The glycinate form is the reason to reach for this one: magnesium bound to the amino acid glycine absorbs well and stays gentle on your stomach, without the laxative effect that comes with some forms. That makes it well-suited for winding down at night, and since magnesium also supports healthy blood pressure and heart rhythm, and roughly half of adults run low, it doubles as everyday repletion.
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Ingredients (2)
Buffered Magnesium Glycinate
100%Dose
800 mg
Target
100–400 mg
Form
Premium
Elemental Magnesium
100%Dose
200 mg
Target
100–400 mg
Form
Not listed
Other Ingredients (5)
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
HypromelloseCapsule
Plant-derived capsule material from cellulose
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
Purified WaterSolvent
Water meeting USP specifications used as solvent/vehicle in gummies and liquids
How to Take It
Best taken in the evening
Magnesium glycinate is the gentlest form on the gut and the one most people take at night. Absorption doesn't change with the clock — consistency does.
With or without food
Space it a couple of hours from Iron and Calcium
On the label
1 capsule 1–2 times per day or as directed by a health professional. Warnings: Consult a health care professional before use, especially if you are pregnant or breastfeeding, are taking medication, or have a medical condition. Keep out of the reach of children.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$13.97
Cheaper than 80% of 579 magnesium supplements
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Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from the NIH Office of Dietary Supplements and the National Academies Dietary Reference Intakes (DRI).
This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.
The score analyzes what's on the label: ingredient doses vs. studied ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.