Confidence: 80%
Decision summary
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 care a lot about label clarity and want fewer unknowns.
Score breakdown
Tap a module to see what it measures. A 0 can reflect missing disclosure, not just a negative result.
Dosage quality
4.0/10Dosing 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).
Explore next
Vitamin-d: high-bioavailability form declared (Cholecalciferol (D3)). The main limitation is that vitamin-d: dose 5000.0iu exceeds upper_dose 4000.0iu.
Strengths
Weaknesses
Final verdict
A solid product, but not a clean win. The main trade-off is weaker dosing.
A closer look at the main ingredients, how they influence the score, and the supporting evidence when available. Tap any ingredient to expand.
✔ Clinically effective dose with strong supporting evidence
A clear drag on the formula: Dose is higher than typically recommended ranges. 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
Important label or formulation details that may affect how this product should be interpreted.
Dose quality may be a limiting factor
Declared amount may be weaker than ideal for a stronger result.
Some label details are missing or unclear
Incomplete disclosure makes the product harder to evaluate confidently.
There is a formulation caveat worth noting
Product name or brand not detected (-1)
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 Vitamin D3 supplements ranked with the same methodology, or keep exploring the database.
