KAL Magnesium Glycinate 400 supplement bottle
KAL

Magnesium Glycinate 400 Review

What We Researched
4 active ingredients analyzed · 7 inactive ingredients decoded · 5 brand certifications checked · Page generated: Sep 2026
93
Product Score Excellent
89
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 (as Magnesium Glycinate) 400 mg 95%
Bioavailability Excellent

Absorption Rating

  • Magnesium (as Magnesium Glycinate) Good
Other Ingredients Excellent

Fillers & Additives

  • Rice Bran Oil
  • Gelatin
  • Glycerin
  • Beeswax
  • Water
  • Lecithin
  • Calcium Carbonate
Efficacy Very Good

Dosage Analysis

  • Magnesium (as Magnesium Glycinate) 400 mg High

Supplement Facts

Ingredient Amount % Daily Value
Calories 18 kcal
Total Fat 2 g 3%
Protein 1 g 1%
Magnesium (as Magnesium Glycinate) 400 mg 95%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Rice Bran Oil Safe

It is used as a carrier oil.

Gelatin Safe

Forms the capsule shell that holds the supplement contents.

Glycerin Safe

Retains moisture and helps dissolve ingredients in softgels and liquids.

Beeswax Safe

Used as a coating and to help form softgel capsules.

Water Safe

Dissolves and carries water-soluble ingredients.

Lecithin Safe

It is used as an emulsifier to help mix oil and water-based ingredients.

Calcium Carbonate Safe

Acts as a filler and provides supplemental calcium.

Brand Trust Report
KAL

Founded 1932 · Salt Lake City, Utah, United States · 351 products · kalvitamins.com

Certifications

5 certifications
Nsf Gmp Source available Primary evidence
Fda Gmp Inspections Source available Primary evidence
Usda Organic Source available Primary evidence
NSF Certified Supporting evidence unavailable
Non-GMO Project Verified Supporting evidence unavailable

Transparency

4 claims
Third Party Testing Claim — Claimed Evidence available Evidence
In House Testing — Verified Evidence available Evidence
Testing Lab Disclosure — True Brand claim; evidence unavailable
Contains Proprietary Blend — True Brand claim; evidence unavailable

Violation History

1 incident
Lawsuit A consumer class action was filed alleging that the marketing of a dietary supplement violated California's consumer-protection laws.2013 Source available Primary source
Related Supplements
Frequently Asked Questions
Is KAL Magnesium Glycinate 400 a good supplement?

KAL Magnesium Glycinate 400 received a product quality score of 93/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 4 active ingredients with 30 servings per container. All 7 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, KAL, holds a brand trust score of 89/100.

What are the ingredients in KAL Magnesium Glycinate 400?

KAL Magnesium Glycinate 400 contains 4 active ingredients: Calories (18 kcal), Total Fat (2 g), Protein (1 g), Magnesium (as Magnesium Glycinate) (400 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is KAL Magnesium Glycinate 400 safe to take?

GoodSupp reviewed the inactive-ingredient data available for KAL Magnesium Glycinate 400. All 7 inactive ingredients — including capsule materials, fillers, and binders — are currently classified as safe in GoodSupp's ingredient reference data. This label analysis cannot determine whether the product is safe for a particular person, and source labels may change. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is KAL a trustworthy supplement brand?

KAL receives a brand trust score of 89/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1932 and headquartered in Salt Lake City, Utah, United States, the company offers 351 products in their lineup. Note: KAL has 1 historical regulatory incident 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 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.