Magnesium Oxide Capsules
Scored by the Formulate Research Team · Last reviewed July 2026
Score Breakdown
Formulate scores every product across six weighted dimensions. Each dimension is graded independently — hover or tap to see what drove each component.
Ingredients per Serving
Certifications & Testing
Other Ingredients
Gelatin, Rice Flour, Stearic Acid, Vegetable Magnesium Stearate
Recommended Use
Recommended Use: As a dietary supplement, take 1 capsule daily with 8-10 oz of water, preferably with food, or as directed by your physician.
Warnings
Warning: Consult your physician prior to use if you are pregnant or nursing. Discontinue use and consult your doctor if any adverse reactions occur. Keep out of reach of children. Do not use if safety seal is broken.
Frequently Asked Questions
What is Nutricost Magnesium Oxide Capsules's Formulate score?
Nutricost Magnesium Oxide Capsules scores 90 out of 100 (grade A) on Formulate's ingredient-level rubric: clinical evidence, dose accuracy and bioavailability carry the score, while manufacturing, transparency and safety are checked separately and can only deduct.
Is Nutricost Magnesium Oxide Capsules worth it?
Nutricost Magnesium Oxide Capsules scores 90/100 (grade A). That puts it in Formulate's top tier: its ingredient doses, forms, and label transparency hold up against the clinical evidence, and it carries credible third-party testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in Nutricost Magnesium Oxide Capsules?
Each serving contains Magnesium (420 mg). Serving size: 1 Capsule(s). 240 servings per container.
How do I take magnesium oxide capsules?
Recommended Use: As a dietary supplement, take 1 capsule daily with 8-10 oz of water, preferably with food, or as directed by your physician.
Who makes Magnesium Oxide Capsules?
Magnesium Oxide Capsules is made by Nutricost. See Formulate's full grade and product lineup for Nutricost on its brand page.
Is Nutricost Magnesium Oxide Capsules third-party tested?
Nutricost lists the following certifications and testing for this product: cGMP Certified, FDA Registered, Non-GMO, Gluten-Free.
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Disclosure. Formulate may earn a commission from purchases made through links on this page. Commissions never influence scores — every product is graded by the same automated rubric. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.