tnvitamins Magnesium Glycinate supplement bottle
tnvitamins

Magnesium Glycinate Review

What We Researched
1 active ingredient analyzed · 3 inactive ingredients decoded · 1 brand certification checked · Last updated: Aug 2026
100
Product Score Excellent
77
Brand Score Fair

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 300 mg
Bioavailability Excellent

Absorption Rating

  • Magnesium Good
Other Ingredients Excellent

Fillers & Additives

  • Magnesium Stearate
  • Microcrystalline Cellulose
  • Gelatin
Efficacy Excellent

Dosage Analysis

  • Magnesium 300 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Magnesium 300 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Microcrystalline Cellulose Safe

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

Gelatin Safe

Forms the capsule shell that holds the supplement contents.

Brand Trust Report
tnvitamins

Founded 1979 · Deer Park, NY, USA · 136 products · tnvitamins.com/

Certifications

1 certification
Consumerlab Verified Source

Transparency

2 claims
Third Party Testing Claim — Claimed Source

Violation History

1 incident
Fda Warning Significant violations of Current Good Manufacturing Practice (CGMP) regulations for dietary supplements.2017-08-16Source
Related Supplements
Frequently Asked Questions
Is tnvitamins Magnesium Glycinate a good supplement?

tnvitamins Magnesium Glycinate 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 45 servings per container. All 3 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, tnvitamins, holds a brand trust score of 77/100 with 1 verified certifications including Consumerlab.

What are the ingredients in tnvitamins Magnesium Glycinate?

tnvitamins Magnesium Glycinate contains 1 active ingredients: Magnesium (300 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is tnvitamins Magnesium Glycinate safe to take?

tnvitamins Magnesium Glycinate has been analyzed for ingredient safety across all its components. All 3 inactive ingredients — including capsule materials, fillers, and binders — are rated safe based on regulatory data and published safety research. This is a clean formulation with no controversial additives. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is tnvitamins a trustworthy supplement brand?

tnvitamins receives a brand trust score of 77/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1979 and headquartered in Deer Park, NY, USA, the company offers 136 products in their lineup. They hold 1 verified certifications including Consumerlab. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: tnvitamins 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.

Scan Any Supplement Instantly

Download GoodSupp to scan barcodes, check ingredient safety, and find the best supplements for your needs.

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.