EVIDENCE-BASED SUPPLEMENT SCORING
8.9/10
TOP TIER

Confidence: 100%

Premium Whey Protein Isolate Powder 500g Unflavored Irish Grass-Fed, 27g Protein per Serving for Muscle Growth & Recovery Non-Bloating, Gluten & Lactose Free, Clean Ingredients | Centenarius Nutrition

Premium Whey Protein Isolate Powder 500g Unflavored Irish Grass-Fed, 27g Protein per Serving for Muscle Growth & Recovery Non-Bloating, Gluten & Lactose Free, Clean Ingredients | Centenarius Nutrition

B08ZNWFLTV

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Decision summary

CONSIDERTOP TIER

A strong option overall. Its main value comes from excipient quality, but the listed weaknesses are still worth checking…

Best for

People prioritizing high absorption and overall formula quality.

Consider another option if

You need a very specific optimization beyond what the current scoring output captures.

Score breakdown

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

Dosage quality

8.4/10

Generally solid dosing

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 8.4/10 · Bioavailability 7/10 · Coherence 0/10

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

Score summary

Whey-protein: dose within clinically studied range (evidence A). The main limitation is that formula coherence is weak: diluted, decorative or overly complex.

Strengths

Whey-protein: dose within clinically studied range (evidence A)
Whey-protein: high-bioavailability form declared (Isolate)
Tryptophan: dose within clinically studied range (evidence B)

Weaknesses

Formula coherence is weak: diluted, decorative or overly complex
Arginine: below clinically studied range
Glycine: below clinically studied range

Final verdict

A strong option overall. Its main value comes from excipient quality, but the listed weaknesses are still worth checking before buying.

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 well positioned: Dose is strong and within effective ranges. 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

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

Dose is within the optimal/effective range. Strong contributor: Dose is strong and within effective ranges. The declared form supports strong absorption.

Clinical dosing guidance

Based on established dosing ranges used in clinical practice.

Min effective: 250 mgOptimal: 500 mgUpper: 2000 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. Strong contributor: Dose is strong and within effective ranges. The declared form supports strong absorption.

Scientific evidence

RCT

Norton & Layman review leucine and mTOR activation in protein synthesis

Journal of Nutrition • 2006

PMID: 16365087.0

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. The declared form supports strong absorption.

Scientific evidence

Meta-analysis

Jongkees et al. meta-analysis tyrosine and cognitive performance under stress

Neuroscience & Biobehavioral Reviews • 2015

PMID: 25797858.0

RCT

Banderet & Lieberman RCT tyrosine and cognitive performance under stress

Brain Research Bulletin • 1989

PMID: 2736402.0

⚠ Moderate evidence exists, but dose is below effective threshold

Dose is below the minimum effective threshold. One of the weaker points: Dose is likely below clinically useful levels. The declared form supports strong absorption.

Scientific evidence

RCT

Bannai et al. RCT glycine supplementation and sleep quality

Sleep and Biological Rhythms • 2012

PMID: 22529837.0

Evidence inferred from established knowledge, not directly linked studies

Adequate, but not a key strength: Clinical dosing guidance is limited for this ingredient. The declared form supports strong absorption.

No supporting studies or dosing references are currently available for this ingredient.

Premium Whey Protein Isolate Powder 500g Unflavored Irish Grass-Fed, 27g Protein per Serving for Muscle Growth & Recovery Non-Bloating, Gluten & Lactose Free, Clean Ingredients | Centenarius Nutrition

Premium Whey Protein Isolate Powder 500g Unflavored Irish Grass-Fed, 27g Protein per Serving for Muscle Growth & Recovery Non-Bloating, Gluten & Lactose Free, Clean Ingredients | Centenarius Nutrition

Warnings & notes

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

Formula design looks less coherent than stronger alternatives

The formulation appears less focused than better-built options.

Note
!

Arginine dose looks below clinically effective levels

Declared amount falls below ranges used in human trials.

Warning
!

Glycine 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.

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