Optimum Nutrition Gold Standard Whey

Optimum Nutrition (ON) is a globally recognized leader in sports nutrition, most famous for its 'Gold Standard' whey protein. The brand was founded in the United States by brothers Tony and Michael Costello, who aimed to improve the quality of the emerging supplement industry. Over several decades, the brand has become a staple in the fitness community, known for rigorous quality control and the widespread availability of its products in gyms and health stores worldwide.

In 2008, the brand reached a turning point when it was acquired by Glanbia, a global nutrition group headquartered in Ireland. This acquisition allowed Optimum Nutrition to leverage Glanbia’s extensive dairy processing capabilities. Today, while the brand maintains its American roots and significant manufacturing presence in the USA (as indicated by the 'US' code on many labels), its products are also manufactured in the United Kingdom and Ireland to serve European and international markets. Glanbia continues to manage the brand as a key part of its Global Performance Nutrition portfolio.