EVIDENCE-BASED SUPPLEMENT SCORING
5.9/10
AVERAGE

Confidence: 81%

Dr. Berg Vitamin D3 & K2 10,000 IU + MK-7 – 120 Capsules – Immune, Bone & Heart Support* Supplement w/Magnesium, Zinc, B6 – 4X Lab-Tested – No Fillers – Non-GMO, cGMP, Formulated in USA

Dr. Berg Vitamin D3 & K2 10,000 IU + MK-7 – 120 Capsules – Immune, Bone & Heart Support* Supplement w/Magnesium, Zinc, B6 – 4X Lab-Tested – No Fillers – Non-GMO, cGMP, Formulated in USA

B06WRNG37C

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Decision summary

CONSIDERAVERAGE

Not a strong option overall. The product is materially held back by weaker formulation coherence.

Best for

Buyers comparing price and availability and okay with a middle-of-the-pack option.

Consider another option if

You want one of the best-absorbed options in this category.

Score breakdown

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

Dosage quality

2.2/10

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).

Multi-ingredient formulation analysis

Dose 2.2/10 · Bioavailability 5.6/10 · Coherence 0/10

Dose quality suggests a diluted formulation.

This is a multi-ingredient product. The score reflects formulation quality, not efficacy for a specific health goal.

Score summary

Vitamin-d: high-bioavailability form declared (Cholecalciferol (D3)). The main limitation is that vitamin-d: below clinically studied range.

Strengths

Vitamin-d: high-bioavailability form declared (Cholecalciferol (D3))

Weaknesses

Vitamin-d: below clinically studied range
Magnesium: below clinically studied range
Formula coherence is weak: diluted, decorative or overly complex

Final verdict

Not a strong option overall. The product is materially held back by weaker formulation coherence.

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.

⚠ 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

⚠ 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

✔ Clinically effective dose with strong supporting evidence

This is a limiting factor: Dose is strong and within effective ranges. The label does not specify the form, so absorption quality cannot be verified.

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

ℹ Dose is within established clinical ranges, but lacks direct studies

One of the weaker points: Dose is directionally useful, but not a standout strength. The label does not specify the form, so absorption quality cannot be verified.

Clinical dosing guidance

Based on established dosing ranges used in clinical practice.

Min effective: 75 mcgOptimal: 120 mcgUpper: 1000 mcgGrade: B

ℹ Dose is below the optimal range with moderate supporting evidence

One of the weaker points: Dose is likely below clinically useful levels.

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

Evidence inferred from established knowledge, not directly linked studies

Solid but not a standout: Clinical dosing guidance is limited for this ingredient.

No supporting studies or dosing references are currently available for this ingredient.

Dr. Berg Vitamin D3 & K2 10,000 IU + MK-7 – 120 Capsules – Immune, Bone & Heart Support* Supplement w/Magnesium, Zinc, B6 – 4X Lab-Tested – No Fillers – Non-GMO, cGMP, Formulated in USA

Dr. Berg Vitamin D3 & K2 10,000 IU + MK-7 – 120 Capsules – Immune, Bone & Heart Support* Supplement w/Magnesium, Zinc, B6 – 4X Lab-Tested – No Fillers – Non-GMO, cGMP, Formulated in USA

Warnings & notes

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

!

Vitamin D dose looks below clinically effective levels

Declared amount falls below ranges used in human trials.

Warning
!

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

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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