Two capsules deliver 200mg of elemental **magnesium**, dosed for sleep and muscle relaxation — and because the label counts the magnesium itself rather than the heavier bisglycinate it's bound to, that's a genuine dose, not inflated compound weight. It sits squarely in the 100–400mg supplemental range and covers a little over half the daily target.

The bisglycinate form pairs magnesium with glycine, an amino acid that has its own calming, sleep-supporting role, and it absorbs well while staying easy on the stomach — worth knowing if other magnesium forms have left you with loose stools or cramping.

At 200mg this covers maintenance and everyday calm rather than the higher end of the range; if you're correcting a known deficiency, you may want to combine it with magnesium-rich food or a second serving to push closer to the 310–420mg daily target.

BioStacks
Nature Made

Magnesium Glycinate 200 mg

2 Capsules · 30 servings

iHerbAmazon

Best for

Sleep

Ingredients (1)

Magnesium

100%

Dose

200 mg

Target

100–400 mg

Form

Premium

Nutrition

Calories, macros & sodium.

  • Calories10 Calorie(s)
  • Total Carbohydrates1 GaIU
  • Protein2 Gram(s)

Other Ingredients (6)

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

Microcrystalline CelluloseBinder

Plant-derived cellulose used as a binder and filler in supplements

Citric AcidAcidulant

Natural acid derived from citrus fruits

GelatinCapsule

Protein derived from collagen, used in traditional capsule shells

Purified WaterSolvent

Water meeting USP specifications used as solvent/vehicle in gummies and liquids

How to Take It

Best taken in the evening

Magnesium bisglycinate 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

Suggested use: Adults, take 2 capsules daily with water and a meal.

General guidance based on the ingredients, not a substitute for the label or your doctor.

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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.

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