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Nutrition & food
Klean Athlete Klean Isolate (whey)
Clinical ~$45
NSF Certified for Sport whey isolate for readers who are drug-tested (collegiate, Olympic, military), a distinct and stricter bar than the brand-level testing on our standard Optimum Nutrition pick.
Called for in
- Strength, Power & Hypertrophy Protocol · Andy Galpin
- Build Muscle: Train First, Then Feed It · Stuart Phillips
Experts who call for it
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Tiered options are coming soon. Today, every pick above is our single vetted recommendation.
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Educational only, not medical advice. Talk to a doctor about your individual circumstances before acting on this.