⚠️ Affiliate Disclosure: FitLabReviews earns commissions from Amazon affiliate links at no extra cost to you. Rankings are determined exclusively by the FitLab Science Team's 10-point FitLab scoring system — ingredient quality, clinical dosing, third-party testing, label transparency, and value. Commission rates are never factored into rankings. Full scoring methodology →
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Editor's Choice
Gold Standard 100% Whey
Optimum Nutrition · $39.99 (2lb)
The benchmark for 15+ years. 24g protein, 5.5g BCAAs, Informed Sport certified, best-in-class mixability. 20+ flavours. Start here and stay here.
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Best Isolate
ISO100 Hydrolyzed Whey
Dymatize · $49.99
Zero lactose, 25g hydrolysed whey isolate, ultra-fast absorption, Informed Sport certified. The cleanest whey available. Best for lactose-intolerant users.
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Best Value
Impact Whey Protein
MyProtein · ~$55 (5.5lb)
~$0.80 per serving in bulk — best cost-per-gram available. 80+ flavours, 21g protein. Best for budget-conscious buyers hitting daily protein targets.
4
Best Plant
Sport Organic Plant Protein
Garden of Life · $44.99
Best plant protein with complete amino acid profile. 30g protein from pea + rice + chia. USDA Organic, NSF Certified for Sport.
5
Best Casein
Gold Standard 100% Casein
Optimum Nutrition · $36.99 (2lb)
Digests in 6–8 hours — ideal before bed for overnight muscle protein synthesis. 28g protein per serving with ON's reliable quality.
📋 How We Rank
Ingredient Quality
30%
Clinical Dosing
25%
Transparency
20%
Value for Money
25%