What is the best clean label protein?

Based on our comprehensive testing and analysis, we rank the top products in this category using our multi-factor scoring system. Protein products with the cleanest ingredients — no artificial sweeteners, colors, flavors, or unnecessary additives.

How do we rank clean label protein proteins?

Our rankings are determined by a combination of protein quality, purity score, value score, third-party testing status, and ingredient transparency.

How often is this list updated?

We review and update our rankings monthly. Prices are checked weekly, and any new product launches or formula changes trigger an immediate re-evaluation.

Can I trust these recommendations?

ProteInsights is independently funded and does not accept payment for placement. Our scoring methodology is transparent and based entirely on measurable data points.

Best Clean Label Protein in 2026

Clean label protein means knowing exactly what is in your supplement and trusting every ingredient.

Our clean label picks contain no artificial sweeteners, colors, or flavors.

Many feature third-party certifications, organic ingredients, and minimal processing.

These products prioritize ingredient quality and transparency over taste and value.

How We Chose These Products

Every product on this list was evaluated using our multi-factor scoring system that analyzes protein quality, purity, value, and third-party testing. We weigh nutritional data, certifications, ingredient transparency, and real-world user reviews. Read our full methodology.

#1
Thorne Whey Protein Isolate
by Thorne
Protein: 21g
Price/serving: $1.86
69
Score
Pharmaceutical-grade whey isolate with NSF and Informed Sport dual certification — trusted by pros.
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#2
Garden of Life RAW Organic Protein
by Garden of Life
Protein: 22g
Price/serving: $2.50
67
Score
13 raw sprouted organic proteins in one — USDA Organic, NSF Certified, and truly whole-food based.
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#3
Momentous Essential Grass-Fed Whey
by Momentous
Protein: 24g
Price/serving: $2.80
65
Score
NSF and Informed Sport dual-certified grass-fed whey isolate trusted by elite athletes.
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#4
NOW Sports Whey Protein Isolate
by NOW Sports
Protein: 25g
Price/serving: $0.83
88
Score
Informed Sport certified unflavored whey isolate with 25g protein — from a trusted 50+ year brand.
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#5
Transparent Labs 100% Grass-Fed Whey IsolateEditor's Choice
by Transparent Labs
Protein: 28g
Price/serving: $2.00
72
Score
Grass-fed whey isolate with 28g protein, stevia sweetened, and fully transparent label.
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#6
Kaged Whey Protein Isolate
by Kaged
Protein: 25g
Price/serving: $1.35
72
Score
Informed Sport certified whey isolate with 25g protein, cold-processed for quality.
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#7
BulkSupplements Whey Protein Isolate 90%
by BulkSupplements
Protein: 27g
Price/serving: $0.82
84
Score
Pure 90% whey isolate with one ingredient, zero additives, and wholesale pricing.
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#8
Legion Whey+
by Legion Athletics
Protein: 22g
Price/serving: $0.90
75
Score
Naturally sweetened grass-fed whey isolate with 22g protein and no artificial additives.
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#9
Naked Whey
by Naked Nutrition
Protein: 25g
Price/serving: $1.18
72
Score
Single-ingredient grass-fed whey concentrate — just protein, nothing else.
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#10
Ritual Essential Protein
by Ritual
Protein: 20g
Price/serving: $2.93
59
Score
Traceable pea protein with zero sweeteners — science-backed and radically transparent.
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#11
Sunwarrior Classic Protein
by Sunwarrior
Protein: 17g
Price/serving: $1.10
64
Score
USDA Organic brown rice protein — minimally processed and allergen-friendly.
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