EVIDENCE-BASED SUPPLEMENT SCORING
7.9/10
SOLID OPTION

Confidence: 100%

Dr. Berg Magnesium Glycinate 150ct – 4-in-1 Chelated for Muscle, Nerve, Sleep & Stress Support*– w/ D3, B6 & Zinc – 4X Lab-Tested – No Fillers – Formulated in USA, GMP-Certified

Dr. Berg Magnesium Glycinate 150ct – 4-in-1 Chelated for Muscle, Nerve, Sleep & Stress Support*– w/ D3, B6 & Zinc – 4X Lab-Tested – No Fillers – Formulated in USA, GMP-Certified

B0DL6JVD1Z

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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

5.2/10

Acceptable dosing, but not standout

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

Zinc: dose within clinically studied range (evidence A). The main limitation is that magnesium: below clinically studied range.

Strengths

Zinc: dose within clinically studied range (evidence A)
Magnesium: high-bioavailability form declared (Magnesium Glycinate)
Vitamin-d: high-bioavailability form declared (Cholecalciferol (D3))

Weaknesses

Magnesium: below clinically studied range
Formula coherence is weak: diluted, decorative or overly complex
Vitamin-d: 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 Evidence is strong, but dose is below the optimal range

A clear strength: Dose is strong and within effective ranges. The declared form supports strong absorption.

Scientific evidence

Meta-analysis

Singh & Das Cochrane review zinc for common cold

Cochrane Database of Systematic Reviews • 2011

PMID: 22553186.0

RCT

Prasad et al. RCT zinc supplementation and testosterone in elderly men

Nutrition • 1996

PMID: 8875519.0

⚠ Strong evidence exists, but dose is below effective threshold

One of the weaker points: Dose is likely below clinically useful levels. 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 may be too low to be effective

A clear drag on the formula: Dose is likely below clinically useful levels. The declared form supports strong absorption.

Scientific evidence

Meta-analysis

Martineau et al. meta-analysis vitamin D supplementation and respiratory infections

BMJ • 2017

PMID: 26864360.0

Meta-analysis

Bischoff-Ferrari et al. meta-analysis vitamin D fracture prevention

BMJ • 2009

PMID: 20198382.0

ℹ Dose is below the optimal range with moderate supporting evidence

One of the weaker points: Dose is likely below clinically useful levels. The declared form is not one of the better-absorbed options.

Scientific evidence

RCT

Bryan et al. RCT on B vitamins and cognitive function in older adults

American Journal of Clinical Nutrition • 2002

PMID: 16920179.0

Dr. Berg Magnesium Glycinate 150ct – 4-in-1 Chelated for Muscle, Nerve, Sleep & Stress Support*– w/ D3, B6 & Zinc – 4X Lab-Tested – No Fillers – Formulated in USA, GMP-Certified

Dr. Berg Magnesium Glycinate 150ct – 4-in-1 Chelated for Muscle, Nerve, Sleep & Stress Support*– w/ D3, B6 & Zinc – 4X Lab-Tested – No Fillers – Formulated in USA, GMP-Certified

Warnings & notes

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

!

Magnesium dose looks below clinically effective levels

Declared amount falls below ranges used in human trials.

Warning

Formula design looks less coherent than stronger alternatives

The formulation appears less focused than better-built options.

Note
!

Vitamin D 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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