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Optimum Nutrition Gold Standard Protein

Uncompromising Quality

Before a single machine is turned on in our manufacturing facilities, Optimum Nutrition procurement professionals carefully select the most premium raw materials. A Certificate of Analysis is required for every ingredient, which is then tested and retested for compliance. Quality assurance performs daily inspections of our current Good Manufacturing Practices (cGMPs) compliant facilities, which are GMP Registered and GMP for Sport by NSF.

History of Innovation

In addition to making Gold Standard 100% Whey, the worlds' best-selling whey protein, Optimum Nutrition created the slowly digesting protein category with Gold Standard 100% Casein. Optimum Nutrition also created the anytime energy category, which remains dominated by Essential Amino Energy.

Customer Satisfaction

Optimum Nutrition's strict ingredients selection, quality control, lab testing and manufacturing processes are all done for one reason: to provide you with the highest quality sports nutrition products available. Our company was founded with a mission to bring consistent quality to the marketplace, and we are constantly working on setting even higher standards.