Whey protein is a supplement that some people use to increase their protein intake or to help boost muscle protein synthesis and lean muscle mass growth. Milk consists of two proteins: casein and ...

Optimum Nutrition’s Gold Standard 100% Whey is a premium blend featuring ... GNC Pro Performance Whey provides 24g of pure, instantised whey protein with 5.5g BCAAs and DigeZyme for easy digestion.