Pure Encapsulations UltraMag Magnesium supplement bottle
Pure Encapsulations

UltraMag Magnesium Review

What We Researched
1 active ingredient analyzed · 9 inactive ingredients decoded · 4 brand certifications checked · Last updated: Aug 2026
100
Product Score Excellent
81
Brand Score Good

Two independent scores — the product and the brand behind it, never blended into one number. See our methodology.

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Magnesium 225 mg 54%
Bioavailability Excellent

Absorption Rating

  • Magnesium Good
Other Ingredients Excellent

Fillers & Additives

  • Sucrose esters of fatty acids
  • Cellulose
  • Sunflower Lecithin
  • Magnesium Oxide
  • Tricalcium Phosphate
  • Hypoallergenic plant fiber
  • Rice Starch
  • Water
  • Rice Flour
Efficacy Excellent

Dosage Analysis

  • Magnesium 225 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Magnesium 225 mg 54%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Sucrose esters of fatty acids Unknown
Cellulose Safe

Provides bulk and structure in tablets and capsules.

Sunflower Lecithin Safe

Helps mix oil and water-based ingredients. Allergen-free alternative to soy lecithin.

Magnesium Oxide Generally_safe

It is used to provide magnesium, an essential mineral.

Tricalcium Phosphate Safe

Prevents clumping and provides supplemental calcium.

Hypoallergenic plant fiber Unknown
Rice Starch Generally_safe

It is used as a filler or binder in supplements.

Water Safe

Dissolves and carries water-soluble ingredients.

Rice Flour Safe

Natural bulking agent to fill capsule space. Hypoallergenic.

Brand Trust Report
Pure Encapsulations

Founded 1991 · Sudbury, Massachusetts, United States · 228 products · pureencapsulations.com

Certifications

4 certifications
Fda Gmp Inspections Verified Source
Nsf Gmp Verified Source
NSF Certified Verified
Gluten-Free Certified Verified

Transparency

4 claims
Third Party Testing Claim — Verified Source
Testing Lab Disclosure — Verified Source
Contains Proprietary Blend — True
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Frequently Asked Questions
Is Pure Encapsulations UltraMag Magnesium a good supplement?

Pure Encapsulations UltraMag Magnesium received a product quality score of 100/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 1 active ingredients with 120 servings per container. Of the 9 inactive ingredients, 5 are rated safe and 0 are flagged for review. The manufacturer, Pure Encapsulations, holds a brand trust score of 81/100 with 4 verified certifications including Fda Gmp Inspections, Nsf Gmp, NSF Certified, Gluten-Free Certified.

What are the ingredients in Pure Encapsulations UltraMag Magnesium?

Pure Encapsulations UltraMag Magnesium contains 1 active ingredients: Magnesium (225 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Pure Encapsulations UltraMag Magnesium safe to take?

Pure Encapsulations UltraMag Magnesium has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Pure Encapsulations a trustworthy supplement brand?

Pure Encapsulations receives a brand trust score of 81/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1991 and headquartered in Sudbury, Massachusetts, United States, the company offers 228 products in their lineup. They hold 4 verified certifications including Fda Gmp Inspections, Nsf Gmp, NSF Certified, Gluten-Free Certified. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. No regulatory violations or FDA warning letters were found in our research.

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 150,000 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 150,000 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 — read our methodology. 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.