Nature Made High Potency Magnesium 400 mg supplement bottle
Nature Made

High Potency Magnesium 400 mg

What We Researched
3 active ingredients analyzed · 7 inactive ingredients decoded · 4 brand certifications checked · 1 retailer compared · Last updated: Mar 2026
67
Product Score Fair
86
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Magnesium (as Magnesium Oxide) 400 mg 100%
Bioavailability Very Poor

Absorption Rating

  • Magnesium (as Magnesium Oxide) Poor
Other Ingredients Excellent

Fillers & Additives

  • Medium Chain Triglycerides
  • Gelatin
  • Glycerin
  • Water
  • Soy Lecithin
  • Colors Added Low
  • Yellow Beeswax
Efficacy Very Good

Dosage Analysis

  • Magnesium (as Magnesium Oxide) 400 mg High

Supplement Facts

Ingredient Amount % Daily Value
Calories 10 kcal
Total Fat 0.5 g 1%
Magnesium (as Magnesium Oxide) 400 mg 100%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Medium Chain Triglycerides Safe

Enhances absorption of fat-soluble vitamins.

Gelatin Safe

Forms the capsule shell that holds the supplement contents.

Glycerin Safe

Retains moisture and helps dissolve ingredients in softgels and liquids.

Water Safe

Dissolves and carries water-soluble ingredients.

Soy Lecithin Safe

Helps blend oil and water-based ingredients. Common allergen.

Colors Added Caution

It is used to improve the appearance of the supplement.

Yellow Beeswax Safe

Helps form and seal softgel capsules.

Price Comparison

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
Nature Made

Founded 1971 · West Hills, California, USA · 161 products · naturemade.com

Certifications

4 certifications
Consumerlab Verified Source
Labdoor Verified Source
Usp Verified Verified Source
Fda Gmp Inspections Verified Source

Transparency

4 claims
Third Party Testing Claim — Verified Source
Coa Availability — Claimed Source
In House Testing — Verified Source

Violation History

2 incidents
Lawsuit Presence of toxic plastic chemicals in prenatal multivitamins.2025Source
Recall Specific lots of Nature Made Adult Gummies Multi, Multi + Omega-3, Multi for Her plus Omega-3s, and Super B Complex w/C & Folic Acid2016-06-15Source
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Frequently Asked Questions
Is Nature Made High Potency Magnesium 400 mg a good supplement?

Nature Made High Potency Magnesium 400 mg received a product quality score of 67/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 3 active ingredients Of the 7 inactive ingredients, 6 are rated safe and 1 are flagged for review. The manufacturer, Nature Made, holds a brand trust score of 86/100 with 4 verified certifications including Consumerlab, Labdoor, Usp Verified, Fda Gmp Inspections.

What are the ingredients in Nature Made High Potency Magnesium 400 mg?

Nature Made High Potency Magnesium 400 mg contains 3 active ingredients: Calories (10 kcal), Total Fat (0.5 g), Magnesium (as Magnesium Oxide) (400 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Nature Made High Potency Magnesium 400 mg safe to take?

Nature Made High Potency Magnesium 400 mg has been analyzed for ingredient safety across all its components. Of 7 inactive ingredients, 6 are rated safe. 1 ingredient is flagged for review: Colors Added. 'Caution' doesn't mean dangerous — it indicates the ingredient has some considerations worth being aware of, such as potential sensitivities or ongoing research. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Nature Made a trustworthy supplement brand?

Nature Made receives a brand trust score of 86/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1971 and headquartered in West Hills, California, USA, the company offers 161 products in their lineup. They hold 4 verified certifications including Consumerlab, Labdoor, Usp Verified, Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Nature Made has 2 historical regulatory incidents on record, which are factored into the trust score.

What is magnesium good for?

Magnesium Good For is a topic many supplement consumers ask about. In the context of dietary supplements, understanding magnesium good for helps you make more informed choices about what you put in your body. The quality and form of ingredients matters significantly — two products listing the same ingredient can differ dramatically in bioavailability and effectiveness. GoodSupp analyzes over 250,000 supplement products to help consumers understand exactly what's in their supplements and whether the formulation meets quality standards.

How much magnesium per day?

The optimal dosage depends on your individual health needs, age, sex, and current nutrient levels. Recommended daily amounts are established by health authorities but may vary from therapeutic doses used in clinical research. It's important to check the Supplement Facts label for the exact amount per serving and compare it against the % Daily Value. Some supplements provide mega-doses well above the Daily Value, which may not be necessary and in some cases could be harmful — particularly for fat-soluble vitamins (A, D, E, K) that accumulate in the body. GoodSupp's efficacy analysis evaluates whether a product's dosages align with clinically studied amounts. Always consult your healthcare provider for personalized dosage recommendations.

What is zinc good for?

Zinc Good For is a topic many supplement consumers ask about. In the context of dietary supplements, understanding zinc good for helps you make more informed choices about what you put in your body. The quality and form of ingredients matters significantly — two products listing the same ingredient can differ dramatically in bioavailability and effectiveness. GoodSupp analyzes over 250,000 supplement products to help consumers understand exactly what's in their supplements and whether the formulation meets quality standards.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.