EVIDENCE-BASED SUPPLEMENT SCORING
8.0/10
SOLID OPTION

Confidence: 100%

Gainful Collagen Whey Protein Powder, 21g Protein per Serving, Unflavored, Supports Muscle Recovery, Joint Health, and Skin Hydration with Grass-Fed Collagen Peptides, Vitamin C, 14 Servings

Gainful Collagen Whey Protein Powder, 21g Protein per Serving, Unflavored, Supports Muscle Recovery, Joint Health, and Skin Hydration with Grass-Fed Collagen Peptides, Vitamin C, 14 Servings

B0DZ9SXC3Q

View on Amazon →

SuppScoreLab compares supplement products for informational purposes. We do not sell products directly, and some links may take you to third-party retailers.

Decision summary

CONSIDERSOLID OPTION

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 want fewer compromises on formulation quality.

Score breakdown

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

Dosage quality

5.8/10

Acceptable dosing, but not standout

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).

Score summary

Collagen-peptides: dose within clinically studied range (evidence B). The main limitation is that whey-protein: below clinically studied range.

Strengths

Collagen-peptides: dose within clinically studied range (evidence B)
Whey-protein: high-bioavailability form declared (Isolate)
Collagen-peptides: high-bioavailability form declared (Collagen Hydrolysate)

Weaknesses

Whey-protein: below clinically studied range
Formula coherence is weak: diluted, decorative or overly complex
Vitamin-c: below clinically studied range

Final verdict

A solid product, but not a clean win. The main trade-off is weaker dosing.

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.

✔ Clinically effective dose with strong supporting evidence

Dose is within the optimal/effective range. A clear strength: Dose is strong and within effective ranges. 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

⚠ Strong evidence exists, but dose is below effective threshold

Dose is below the minimum effective threshold. A clear drag on the formula: Dose is likely below clinically useful levels. The declared form supports strong absorption.

Scientific evidence

Meta-analysis

Tang et al. meta-analysis protein supplementation and muscle mass gain

British Journal of Nutrition • 2009

PMID: 22150425.0

⚠ 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 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

Gainful Collagen Whey Protein Powder, 21g Protein per Serving, Unflavored, Supports Muscle Recovery, Joint Health, and Skin Hydration with Grass-Fed Collagen Peptides, Vitamin C, 14 Servings

Gainful Collagen Whey Protein Powder, 21g Protein per Serving, Unflavored, Supports Muscle Recovery, Joint Health, and Skin Hydration with Grass-Fed Collagen Peptides, Vitamin C, 14 Servings

Warnings & notes

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

!

Whey Protein 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
!

Vitamin C dose looks below clinically effective levels

Declared amount falls below ranges used in human trials.

Warning

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.

Still comparing options?

See the best Protein Powder supplements ranked with the same methodology, or keep exploring the database.

As an Amazon Associate I earn from qualifying purchases.