BioStacks
MegaFood

Magnesium

1 Tablet · 90 servings · $0.29/serving

iHerbAmazon

Best for

Sleep

Ingredients (3)

Fermented Magnesium Bisglycinate

50%

Dose

50 mg

Target

100–400 mg

Form

Premium

Magnesium

50%

Dose

50 mg

Target

100–400 mg

Form

Not listed

Organic Spinach Leaf

1%

Dose

50 mg

Target

5000–15000 mg

Form

—

Other Ingredients (2)

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 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

Adults take 1 tablet daily with a beverage. May be taken any time of day, even on empty stomach.

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

Price Check

$25.99

$10$20$50

Near the median of 574 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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