BioStacks
Source Naturals

Magnesium Glycinate

2 Tablets × 2/day · 30 servings · $0.28/serving

iHerbAmazon

Best for

Sleep

Ingredients (2)

Magnesium

100%

Dose/day

400 mg

Target

100–400 mg

Form

Premium

Calcium

95 mg

Trace amount — not scored

Other Ingredients (7)

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

Magnesium StearateLubricant

A salt of stearic acid used as a lubricant in tablet and capsule production

Calcium CarbonateBuffer

Common calcium salt used as a buffering agent, filler, or mineral fortification in supplements

Hydroxypropyl CelluloseBinder

An inert modified-cellulose polymer used as a binder, film-former, and disintegrant.

Microcrystalline CelluloseBinder

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

Microcrystalline CelluloseBinder

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

Stearic AcidLubricant

Saturated fatty acid used as tablet lubricant

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
Label directs 2 servings — keep one for the evening

On the label

2 tablets twice daily.

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

Price Check

$8.40

$10$20$50

Cheaper than 96% of 579 magnesium supplements

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and 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. clinical 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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