Protein Gold Standard 100% Casein -Optimum Nutrition

Slow-Digesting Protein for Overnight Muscle Recovery Casein, a slower digesting and absorbing protein can be used after exercise, between meals or before bed to help support satiety and muscle recovery. Gold Standard 100% Casein™ delivers BCAAs to recovering muscles for several hours. By using only premium micellar casein as a protein source, we’ve created a protein powder that sets the Gold Standard® for slow digesting protein support.