MERRY VITA Collagen for Women – Hydrolyzed Multi Collagen Peptides Types I, II, III, V & X – Collagen Supplement with Vitamin C, Biotin & Hyaluronic Acid – Grass Fed, Non-GMO, 240 Capsules

Decision summary

CONSIDERAVERAGE

A middling option. It may be usable, but weaker formulation coherence makes better alternatives worth comparing.

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Best for

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

Consider another option if

You prefer fully transparent formulas over blends and ambiguous labeling.

Multi-ingredient formulation analysis

Dose 4.2/10 · Bioavailability 3.8/10 · Coherence 0/10

Dose quality suggests a diluted formulation.

Ingredient form quality suggests suboptimal ingredient forms.

A proprietary blend limits independent dose verification.

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

Score summary

Collagen-peptides: high-bioavailability form declared (Collagen Hydrolysate). The main limitation is that proprietary blend prevents independent dose verification.

Strengths

Collagen-peptides: high-bioavailability form declared (Collagen Hydrolysate)

Weaknesses

Proprietary blend prevents independent dose verification

Vitamin-c: below clinically studied range

Formula coherence is weak: diluted, decorative or overly complex

Final verdict

A middling option. It may be usable, but weaker formulation coherence makes better alternatives worth comparing.

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 is below effective threshold

Dose is below the minimum 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

Meta-analysis

Hemila & Chalker Cochrane review vitamin C and common cold duration

Cochrane Database of Systematic Reviews • 2013

PMID: 23440782.0

RCT

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 moderate supporting evidence

Dose is within the optimal/effective range. Solid but not a standout: Dose is directionally useful, but not a standout strength.

Scientific evidence

Systematic review

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

Skin Appendage Disorders • 2017

PMID: 28786550.0

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

Dose meets the minimum effective range, but is below the optimal dose used for stronger effects. Solid but not a standout: Dose is directionally useful, but not a standout strength. The declared form is acceptable, but not among the best-absorbed options.

Clinical dosing guidance

Based on established dosing ranges used in clinical practice.

Min effective: 5 mgOptimal: 10 mgUpper: 20 mgGrade: B

ℹ At the minimum effective range, but below the optimal dose with moderate supporting evidence

Dose meets the minimum effective range, but is below the optimal dose used for stronger effects. A clear drag on the formula: Dose is below the ranges usually used for stronger effects.

Scientific evidence

Meta-analysis

Fakhri et al. meta-analysis astaxanthin and oxidative stress

Antioxidants • 2021

PMID: 33924894.0

RCT

Tominaga et al. RCT astaxanthin and skin wrinkles

Acta Biochimica Polonica • 2012

PMID: 22428137.0

⚠ Strong evidence exists, but dose is below effective threshold

Dose is below the minimum effective threshold. This is a limiting factor: Dose is likely below clinically useful levels. The declared form supports strong absorption.

Scientific evidence

Meta-analysis

de Miranda et al. systematic review collagen peptides and skin elasticity

Journal of Cosmetic Dermatology • 2021

PMID: 31627309.0

✔ Clinically effective dose with strong supporting evidence

Dose is within the optimal/effective range. A clear drag on the formula: Dose is likely below clinically useful levels.

Scientific evidence

Meta-analysis

Wald et al. meta-analysis of folic acid and cardiovascular risk

BMJ • 2002

PMID: 15364185.0

RCT

Daly et al. RCT on folate supplementation and homocysteine reduction

New England Journal of Medicine • 1996

PMID: 9521168.0

MERRY VITA Collagen for Women – Hydrolyzed Multi Collagen Peptides Types I, II, III, V & X – Collagen Supplement with Vitamin C, Biotin & Hyaluronic Acid – Grass Fed, Non-GMO, 240 Capsules

6.1/10

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Warnings & notes

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

i

Proprietary blend limits dose transparency

Exact ingredient amounts cannot be verified clearly.

Info

!

Vitamin C 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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