New Chapter Magnesium Complex 325 mg supplement bottle
New Chapter

Magnesium Complex 325 mg Review

What We Researched
· 7 inactive ingredients decoded · 12 brand certifications checked · Last updated: Aug 2026
100
Product Score Excellent
100
Brand Score Excellent

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

Product Analysis

Transparency Fair

Supplement Facts

No supplement facts data available.

Bioavailability N/A

Absorption Rating

No ingredient forms matched our reference database.

Other Ingredients Excellent

Fillers & Additives

  • Microcrystalline Cellulose
  • Ferment Media (Organic Soy Flour, Organic Saccharomyces Cerevisiae, Lactic Acid Bacteria [l. Acidophilus, B. Bifidum, L. Rhamnosus], Papain [deactivated], Bromelain [deactivated]); Less Than 2% Of: Hydroxypropylcellulose
  • Magnesium Stearate
  • Silica
  • Croscarmellose Sodium
  • Hydroxypropyl Methylcellulose
  • Stearic Acid
Efficacy N/A

Dosage Analysis

Dosage data not available for assessment.

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Ferment Media (Organic Soy Flour, Organic Saccharomyces Cerevisiae, Lactic Acid Bacteria [l. Acidophilus, B. Bifidum, L. Rhamnosus], Papain [deactivated], Bromelain [deactivated]); Less Than 2% Of: Hydroxypropylcellulose Unknown
Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Hydroxypropyl Methylcellulose Safe

It is used as a coating for tablets and capsules.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Brand Trust Report
New Chapter

Founded 1982 · Brattleboro, VT, United States · 123 products · newchapter.com

Certifications

12 certifications
B Corp Certified Verified Source
Nsf Gmp Verified Source
Gluten Free Gfco Verified Source
Non Gmo Project Verified Source
Usda Organic Verified Source
Vegan Certified Verified Source
NSF Certified for Sport Verified
NSF Contents Certified Verified
IGEN Non-GMO Tested Verified
NSF Certified Verified
Gluten-Free Certified Verified
Vegan Action Certified Verified

Transparency

4 claims
Third Party Testing Claim — Verified Source
Testing Lab Disclosure — Verified Source
In House Testing — Verified Source
Contains Proprietary Blend — True
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Frequently Asked Questions
Is New Chapter Magnesium Complex 325 mg a good supplement?

New Chapter Magnesium Complex 325 mg received a product quality score of 100/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. with 30 servings per container. Of the 7 inactive ingredients, 6 are rated safe and 0 are flagged for review. The manufacturer, New Chapter, holds a brand trust score of 100/100 with 12 verified certifications including B Corp Certified, Nsf Gmp, Gluten Free Gfco, Non Gmo Project.

Is New Chapter Magnesium Complex 325 mg safe to take?

New Chapter Magnesium Complex 325 mg 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 New Chapter a trustworthy supplement brand?

New Chapter receives a brand trust score of 100/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1982 and headquartered in Brattleboro, VT, United States, the company offers 123 products in their lineup. They hold 12 verified certifications including B Corp Certified, Nsf Gmp, Gluten Free Gfco, Non Gmo Project. 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.