BioStacks
Nutricost

Magnesium+ Extra-Strength 420 mg

2 Capsules · 60 servings · $0.30/serving

iHerbAmazon
38 / 100Poor

Best for

Heart

Score Breakdown

Formulation
45
Safety
85
Final score
38/100

Ingredients (3)

Magnesium

100%

Dose

420 mg

Target

100–400 mg

Form

Not listed

Magnesium Oxide

Amount not found

Magnesium Glycinate

Amount not found

Other Ingredients (4)

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

Stearic AcidLubricant

Saturated fatty acid used as tablet lubricant

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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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