Whey Protein Isolate
Thorne is the gold standard for clinical purity, holding the NSF Certified for Sport designation which is required by most professional athletic organizations. Their isolate is filtered to remove almost all lactose and contains no artificial sweeteners or thickeners.
Ingredients & Purity
Uses low-temperature microfiltration to preserve delicate protein fractions; sweetened with stevia and cane sugar; includes bromelain and papain for enhanced digestion.
Scientific Evidence
Thorne is the only supplement brand to collaborate with the Mayo Clinic on health and wellness research; NSF Certified for Sport ensures it contains no banned substances.
Brand Transparency
Thorne provides comprehensive data on sourcing and manufacturing in their own NSF-certified facility, rather than outsourcing to a contract manufacturer.
Value Assessment
At roughly $2.00 per serving, it is a premium product, but the assurance of purity for competitive athletes justifies the cost.
Why Not Alternatives?
Unlike mass-market brands like Optimum Nutrition, Thorne eliminates artificial sweeteners like acesulfame potassium and sucralose. It also undergoes more rigorous third-party testing for contaminants and banned substances than 95% of the market.