Supplements
Protein Powder
Compare protein powders by formula, price per serving, testing, and research coverage.
11 researched options — Protein Powder
10 with Ethos Score · Sorted by highest score
Momentous
Whey Protein Isolate
Grass-fed whey isolate with ProHydrolase digestive enzyme.
Best for: People comparing this exact product before purchase.
$44.75
$1.79/serving
Thorne
Whey Protein Isolate
NSF Certified for Sport whey isolate with digestive enzymes.
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$65.00
$2.17/serving
Legion Athletics
Whey+ Grass-Fed Whey Protein Isolate
Grass-fed whey isolate independently tested by Labdoor.
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$59.99
$2.00/serving
Transparent Labs
100% Grass-Fed Whey Protein Isolate
Grass-fed whey isolate with 28 g protein per serving.
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$59.99
$2.00/serving
Garden of Life
SPORT Certified Grass Fed Whey Powder
Sport-certified grass-fed whey with probiotics.
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$47.99
$2.40/serving
Naked Nutrition
Naked Whey
Minimally formulated grass-fed whey protein.
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Price unavailable
Garden of Life
SPORT Organic Plant-Based Protein
Organic sport plant protein with a Consumer Reports lead finding.
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$41.99
$2.21/serving
Isopure
ISOPURE Whey Protein Isolate Unflavored
Unflavored zero-carb whey isolate.
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$39.99
Optimum Nutrition
GOLD STANDARD 100% WHEY
Whey blend with isolate, concentrate, and hydrolyzed whey peptides.
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$74.49
$2.57/serving
Vega
Vega Protein + Recovery
Plant-based performance protein and recovery formula.
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$64.99
$3.42/serving
Ascent Protein
Native Fuel Whey Protein
Native whey blend sold directly by Ascent.
Best for: People comparing this exact product before purchase.
$24.98
$1.78/serving
Only research-ready products are shown. Ethos Scores appear only when explicit structured inputs meet the V1 publication gate; missing data remains pending. See our methodology →