Jigsaw Health MagSRT® B-Free, Time-Release Magnesium, 240 Tablets supplement bottle
Jigsaw Health

MagSRT® B-Free, Time-Release Magnesium, 240 Tablets

What We Researched
2 active ingredients analyzed · 5 inactive ingredients decoded · 2 brand certifications checked · 2 retailers compared · Last updated: Mar 2026
87
Product Score Good
88
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Magnesium (as Dimagnesium Malate) 500 mg 119%
Malic Acid (as Dimagnesium Malate) 1436 mg
Bioavailability Very Good

Absorption Rating

  • Magnesium (as Dimagnesium Malate) Good
  • Malic Acid (as Dimagnesium Malate) Fair
Other Ingredients Excellent

Fillers & Additives

  • Microcrystalline cellulose & hydroxypropyl cellulose (plant-based insoluble fibers used to achieve SRT)
  • L-leucine (essential amino acid used as lubricant)
  • Croscarmellose sodium (plant-based insoluble fiber used to achieve SRT)
  • Silicon dioxide (anti-caking agent)
  • Clear coating (hydroxypropylmethylcellulose and sunflower oil) and Micro wax (for easier swallowing)
Efficacy Very Good

Dosage Analysis

  • Magnesium (as Dimagnesium Malate) 500 mg High

Supplement Facts

Ingredient Amount % Daily Value
Magnesium (as Dimagnesium Malate) 500 mg 119%
Malic Acid (as Dimagnesium Malate) 1436 mg

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$52$51$50$49$48 Mar 12 $49.97
iHerb

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
Jigsaw Health

Founded 2005 · Scottsdale, Arizona, United States · 31 products · jigsawhealth.com

Certifications

2 certifications
Consumerlab Verified Source
Fda Gmp Inspections Verified Source

Transparency

5 claims
Third Party Testing Claim — Verified Source
Coa Availability — Verified Source
Testing Lab Disclosure — Claimed
In House Testing — Verified Source

Violation History

1 incident
Prop 65 leadSource
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Frequently Asked Questions
Is Jigsaw Health MagSRT® B-Free, Time-Release Magnesium a good supplement?

Jigsaw Health MagSRT® B-Free, Time-Release Magnesium, 240 Tablets received a product quality score of 87/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 2 active ingredients with 60 servings per container. Of the 5 inactive ingredients, 0 are rated safe and 0 are flagged for review. The manufacturer, Jigsaw Health, holds a brand trust score of 88/100 with 2 verified certifications including Consumerlab, Fda Gmp Inspections.

What are the ingredients in Jigsaw Health MagSRT® B-Free, Time-Release Magnesium?

Jigsaw Health MagSRT® B-Free, Time-Release Magnesium contains 2 active ingredients: Magnesium (as Dimagnesium Malate) (500 mg), Malic Acid (as Dimagnesium Malate) (1436 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Jigsaw Health MagSRT® B-Free, Time-Release Magnesium safe to take?

Jigsaw Health MagSRT® B-Free, Time-Release Magnesium, 240 Tablets 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 Jigsaw Health a trustworthy supplement brand?

Jigsaw Health receives a brand trust score of 88/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2005 and headquartered in Scottsdale, Arizona, United States, the company offers 31 products in their lineup. They hold 2 verified certifications including Consumerlab, Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Jigsaw Health 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 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.

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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. 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.