Confidence: 77%
B0DCW1FGHZ
View on Amazon →Decision summary
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
1.9/10Dosing 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).
Dose 1.9/10 · Bioavailability 6.1/10 · 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.
Vitamin-d: high-bioavailability form declared (Cholecalciferol (D3)). The main limitation is that vitamin-c: below clinically studied range.
Strengths
Weaknesses
Final verdict
Not a strong option overall. The product is materially held back by weaker formulation coherence.
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
Martineau et al. meta-analysis vitamin D supplementation and respiratory infections
BMJ • 2017
PMID: 26864360.0
Bischoff-Ferrari et al. meta-analysis vitamin D fracture prevention
BMJ • 2009
PMID: 20198382.0
⚠ Strong evidence exists, but dose is below effective threshold
This is a limiting factor: Dose is likely below clinically useful levels. The declared form is acceptable, but not among the best-absorbed options.
Scientific evidence
Hemila & Chalker Cochrane review vitamin C and common cold duration
Cochrane Database of Systematic Reviews • 2013
PMID: 23440782.0
Padayatty et al. RCT on vitamin C antioxidant capacity in healthy adults
Journal of the American College of Nutrition • 2001
PMID: 11684527.0
✔ Clinically effective dose with strong supporting evidence
A clear drag on the formula: Dose is strong and within effective ranges. The label does not specify the form, so absorption quality cannot be verified.
Scientific evidence
Cockayne et al. meta-analysis vitamin K2 and bone mineral density
Archives of Internal Medicine • 2006
PMID: 16801507.0
Geleijnse et al. Rotterdam study on vitamin K intake and cardiovascular mortality
Journal of Nutrition • 2004
PMID: 15514282.0
ℹ Dose is within established clinical ranges, but lacks direct studies
One of the weaker points: Dose is below the ranges usually used for stronger effects. The declared form is acceptable, but not among the best-absorbed options.
Clinical dosing guidance
Based on established dosing ranges used in clinical practice.
⚠ Strong evidence exists, but dose is below effective threshold
This is a limiting factor: Dose is likely below clinically useful levels. The label does not specify the form, so absorption quality cannot be verified.
Scientific evidence
Singh & Das Cochrane review zinc for common cold
Cochrane Database of Systematic Reviews • 2011
PMID: 22553186.0
Prasad et al. RCT zinc supplementation and testosterone in elderly men
Nutrition • 1996
PMID: 8875519.0
ℹ Dose is below the optimal range with moderate supporting evidence
One of the weaker points: Dose is below the ranges usually used for stronger effects. The declared form is acceptable, but not among the best-absorbed options.
Scientific evidence
Clarke et al. meta-analysis B vitamins and cognitive decline
American Journal of Clinical Nutrition • 2007
PMID: 22243457.0
Shipton & Thachil review of vitamin B12 deficiency and fatigue
Postgraduate Medical Journal • 2015
PMID: 20648714.0
Important label or formulation details that may affect how this product should be interpreted.
Vitamin C dose looks below clinically effective levels
Declared amount falls below ranges used in human trials.
Vitamin D dose looks below clinically effective levels
Declared amount falls below ranges used in human trials.
Formula design looks less coherent than stronger alternatives
The formulation appears less focused than better-built options.
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.
See the best Zinc supplements ranked with the same methodology, or keep exploring the database.
