Optimum Nutrition
Comprehensive Brand Analysis
Fast Facts
Company History & Milestones
- 1986: Founded by Michael and Tony Costello.
- 1990s: Launched Gold Standard 100% Whey, best-selling protein globally.
- 1995: Acquired American Body Building.
- 2008: Acquired by Glanbia PLC for $315M.
- 2010s: Built GMP-certified UK facility; expanded to 100+ countries.
- 2020s: Expanded into plant-based proteins and ready-to-drink shakes.
Product & Manufacturing Profile
Core Products
N/A
Manufacturing Model
N/A
Quality Certifications
- Full sports nutrition line: whey, casein, creatine, amino blends, pre-workout, multivitamins.
- Owns manufacturing facilities in U.S. and UK.
- GMP compliant, Informed-Sport and Informed-Choice certified, BRC Grade A.
- Tests raw ingredients multiple times; works with LGC for banned substance testing.
Third-Party Testing
Transparency
Published Testing
- Provides ingredient and testing details online.
Trust Score
Trust Score: None/10
Reasoning: Trust Score: 4/5
Optimum Nutrition has an excellent record of quality, third-party certifications, and global reach. Limited COA disclosure prevents a perfect score, but overall trust is high.
Sources
Featured Ingredients
Where to Buy This Supplement






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