Label-checked supplement reviews
Choose supplements with confidence
We read the Supplement Facts panels, check third-party certification listings, and cite every source, so you can compare products on what the label actually says.
Recommended Products
Top certified picks from our magnesium glycinate guide, chosen from label and certification research, not hands-on testing.
Best certified capsule
Momentous Magnesium Bisglycinate
Magnesium glycinate
- 200 mg elemental magnesium per 2 capsules
- Listed in NSF Certified for Sport
Best certified powder
Thorne Magnesium Bisglycinate
Magnesium glycinate
- 200 mg elemental magnesium per scoop
- Listed in NSF Certified for Sport
Most flexible certified dose
Klean Athlete Klean Magnesium
Magnesium glycinate
- 120 mg elemental magnesium per capsule
- Listed in NSF Certified for Sport
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Label-checked picks
We compare Supplement Facts panels: elemental dose, serving size, and other ingredients.
Sources cited
Every claim links to its source, including NIH databases and public certification listings.
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