The Vitamin Shoppe Magnesium Threonate supplement bottle
The Vitamin Shoppe

Magnesium Threonate

What We Researched
3 active ingredients analyzed · 3 inactive ingredients decoded · 4 brand certifications checked · 1 retailer compared · Last updated: Mar 2026
68
Product Score Fair
87
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Total Carbohydrates 2 g 1%
Magnesium (as Magtein Magnesium L-Threonate) 144 mg 34%
Bioavailability Very Good

Absorption Rating

  • Total Carbohydrates Fair
  • Magnesium (as Magtein Magnesium L-Threonate) Good
Other Ingredients Excellent

Fillers & Additives

  • Modified Cellulose
  • L-Leucine
  • Silicon Dioxide
Efficacy Very Poor

Dosage Analysis

  • Magnesium (as Magtein Magnesium L-Threonate) 144 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Calories 5 kcal
Total Carbohydrates 2 g 1%
Magnesium (as Magtein Magnesium L-Threonate) 144 mg 34%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Modified Cellulose Safe

Creates vegetarian capsule shells with controlled dissolution.

L-Leucine Safe

It is included for its potential muscle-building and recovery benefits.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

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
The Vitamin Shoppe

Founded 1977 · Secaucus, New Jersey, U.S. · 301 products · vitaminshoppe.com

Certifications

4 certifications
Consumerlab Verified
Nsf Certified For Sport Verified Source
Fda Gmp Inspections Verified Source
Usda Organic Verified Source

Transparency

3 claims
Third Party Testing Claim — Verified Source
Coa Availability — Verified Source

Violation History

7 incidents
Lawsuit Understating the sodium content of its Plnt Organic Protein Bar.2025Source
Prop 65 Lead2024-02-08Source
Lawsuit Failure to pay accurate wages and provide proper breaks.2023Source
Lawsuit False and misleading labeling on BodyTech glutamine supplements.2023Source
Lawsuit Website inaccessible to visually impaired individuals.2021Source
Recall Vthrive Bioactive Women's One-Daily Multi vitamins2020-09-24Source
Recall The Vitamin Shoppe Energy Formula multivitamins2020-04-16Source
Related Supplements
Frequently Asked Questions
Is The Vitamin Shoppe Magnesium Threonate a good supplement?

The Vitamin Shoppe Magnesium Threonate received a product quality score of 68/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 3 active ingredients with 30 servings per container. All 3 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, The Vitamin Shoppe, holds a brand trust score of 87/100 with 4 verified certifications including Consumerlab, Nsf Certified For Sport, Fda Gmp Inspections, Usda Organic.

What are the ingredients in The Vitamin Shoppe Magnesium Threonate?

The Vitamin Shoppe Magnesium Threonate contains 3 active ingredients: Calories (5 kcal), Total Carbohydrates (2 g), Magnesium (as Magtein Magnesium L-Threonate) (144 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is The Vitamin Shoppe Magnesium Threonate safe to take?

The Vitamin Shoppe Magnesium Threonate 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 The Vitamin Shoppe a trustworthy supplement brand?

The Vitamin Shoppe receives a brand trust score of 87/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1977 and headquartered in Secaucus, New Jersey, U.S., the company offers 301 products in their lineup. They hold 4 verified certifications including Consumerlab, Nsf Certified For Sport, Fda Gmp Inspections, Usda Organic. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: The Vitamin Shoppe has 7 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.

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. 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.