EVIDENCE-BASED SUPPLEMENT SCORING
3.6/10
SKIP

Confidence: 38%

One A Day Multivitamin for Women- Daily Vitamins for Woman with Biotin, Calcium, Folic Acid, Iron & Zinc, Complete Women’s Vitamins, 200 Ct (Packaging May Vary)

One A Day Multivitamin for Women- Daily Vitamins for Woman with Biotin, Calcium, Folic Acid, Iron & Zinc, Complete Women’s Vitamins (Packaging May Vary)

B09QBKGDLS

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Decision summary

SKIPSKIP

Not a strong option overall. The product is materially held back by weaker ingredient form quality.

Best for

Very few buyers — better options are usually available.

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

4.4/10

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 4.4/10 · Bioavailability 0/10 · Coherence 0/10

Dose quality suggests a diluted formulation.

Ingredient form quality suggests suboptimal ingredient forms.

Some ingredient forms are not declared on the label.

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

Score summary

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

Strengths

Iron: dose within clinically studied range (evidence A)
Iodine: dose within clinically studied range (evidence A)
Vitamin-d: high-bioavailability form declared (Cholecalciferol (D3))

Weaknesses

Calcium: below clinically studied range
Calcium: chemical form not specified on label
Formula coherence is weak: diluted, decorative or overly complex

Final verdict

Not a strong option overall. The product is materially held back by weaker ingredient form quality.

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 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.

Scientific evidence

Systematic review

Patel et al. systematic review biotin and hair/nail health

Skin Appendage Disorders • 2017

PMID: 28786550.0

⚠ Strong evidence exists, but dose is below effective threshold

A clear drag on the formula: Dose is likely below clinically useful levels. The label does not specify the form, so absorption quality cannot be verified.

Scientific evidence

Meta-analysis

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

BMJ • 2007

PMID: 17720017.0

✔ Clinically effective dose with moderate 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

Meta-analysis

Pasricha et al. systematic review iron and fatigue in non-anaemic women

BMJ Open • 2012

PMID: 23169929.0

✔ Clinically effective dose with strong supporting evidence

Dose is well positioned: Dose is strong and within effective ranges.

Scientific evidence

Systematic review

Zimmermann et al. review on iodine deficiency and thyroid function in human populations

Endocrine Reviews • 2009

PMID: 19357404.0

Cohort

Bath et al. maternal iodine status and offspring cognitive outcomes (ALSPAC cohort)

Lancet • 2013

PMID: 23683674.0

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

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.

Clinical dosing guidance

Based on established dosing ranges used in clinical practice.

Min effective: 0.9 mgOptimal: 1.5 mgUpper: 10 mgGrade: B

ℹ Dose is below the optimal range and supported by limited evidence

Supports the formula, but not a major driver: Dose is directionally useful, but not a standout strength.

Scientific evidence

narrative_review

Hodges et al. review on pantothenic acid physiology and human deficiency implications

Advances in Nutrition • 2020

One A Day Multivitamin for Women- Daily Vitamins for Woman with Biotin, Calcium, Folic Acid, Iron & Zinc, Complete Women’s Vitamins, 200 Ct (Packaging May Vary)

One A Day Multivitamin for Women- Daily Vitamins for Woman with Biotin, Calcium, Folic Acid, Iron & Zinc, Complete Women’s Vitamins, 200 Ct (Packaging May Vary)

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
i

Calcium form is not clearly declared

Exact ingredient form is not disclosed on the label.

Info

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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