Amazon.com: PrimaForce Peak O2 Workout Supplement, 120 grams - Proprietary Blend, Non-GMO, Vegan and Gluten Free : Health & Household
Sleep Blend Sp-17 – Solaray
SZN Supplements Pre Workout Formula New Proprietary Powder Blend & Great Taste | eBay
All-Natural Anti-Inflammatory Essential Synergy Women's Support Formula by Moms for Nutrition with a Proprietary Blend of Herbs, Enzymes and Botanicals for Inflammation-Induced Pain, 60 Count
Why "Proprietary Blends" In Fitness Supplements Are A Scam
What are proprietary blends and why should you care? – GoNutrition