EVIDENCE-BASED SUPPLEMENT SCORING
7.7/10
SOLID OPTION

Confidence: 100%

Source Naturals Magnesium Bis-Glycinate, Superior Bioavailable Chelate*, Chelated for Increased Absorption, 200 mg per Serving - 120 Tablets

Source Naturals Magnesium Bis-Glycinate, Superior Bioavailable Chelate*, Chelated for Increased Absorption, 200 mg per Serving - 120 Tablets

B0014H1K48

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Decision summary

CONSIDERSOLID OPTION

A solid product, but not a clean win. The main trade-off is weaker dosing.

Best for

People prioritizing high absorption and overall formula quality.

Consider another option if

You want fewer compromises on formulation quality.

Score breakdown

Tap a module to see what it measures. A 0 can reflect missing disclosure, not just a negative result.

Dosage quality

3.7/10

Dosing looks weaker than ideal

Checks whether labeled ingredient amounts fall within clinically studied ranges (not just regulatory minimums). Low/0 can reflect under-dosing or missing amounts (e.g., proprietary blends).

Score summary

Magnesium: high-bioavailability form declared (Magnesium Glycinate). The main limitation is that calcium: below clinically studied range.

Strengths

Magnesium: high-bioavailability form declared (Magnesium Glycinate)

Weaknesses

Calcium: below clinically studied range

Final verdict

A solid product, but not a clean win. The main trade-off is weaker dosing.

Ingredient Analysis & Evidence

A closer look at the main ingredients, how they influence the score, and the supporting evidence when available. Tap any ingredient to expand.

ℹ At the minimum effective range, but below the optimal dose; evidence is strong

Dose meets the minimum effective range, but is below the optimal dose used for stronger effects. One of the weaker points: Dose is below the ranges usually used for stronger effects. The declared form supports strong absorption.

Scientific evidence

Systematic review

Boyle et al. systematic review magnesium and subjective anxiety

Nutrients • 2017

PMID: 28145455.0

Meta-analysis

Dong et al. meta-analysis magnesium intake and type 2 diabetes risk

Diabetes Care • 2011

PMID: 21868780.0

⚠ Strong evidence exists, but dose is below effective threshold

Dose is below the minimum effective threshold. A clear drag on the formula: Dose is likely below clinically useful levels. The declared form is acceptable, but not among the best-absorbed options.

Scientific evidence

Meta-analysis

Tang et al. meta-analysis calcium supplementation and fracture risk

BMJ • 2007

PMID: 17720017.0

Source Naturals Magnesium Bis-Glycinate, Superior Bioavailable Chelate*, Chelated for Increased Absorption, 200 mg per Serving - 120 Tablets

Source Naturals Magnesium Bis-Glycinate, Superior Bioavailable Chelate*, Chelated for Increased Absorption, 200 mg per Serving - 120 Tablets

Warnings & notes

Important label or formulation details that may affect how this product should be interpreted.

!

Calcium dose looks below clinically effective levels

Declared amount falls below ranges used in human trials.

Warning

Methodology

Read our methodology overview to understand how SuppScoreLab combines multiple scientific dimensions into one practical score.

View methodology →

This evaluation is based on the product label and declared Supplement Facts available at review time. It does not verify laboratory-tested composition, purity, or batch-level quality. This content is educational and not medical advice. Consult a qualified healthcare professional for personal health decisions. Affiliate disclosure: SuppScoreLab may earn a commission from qualifying Amazon links.

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