NutraBio? Grass Fed Whey Protein Isolate delivers 25 grams of clean, complete protein per serving. We use only Truly Grass Fed? certified whey protein isolate that is Non-GMO verified, environmentally responsible, animal welfare friendly, rBST/hormone free and antibiotic free. NutraBio? Grass Fed Whey Protein Isolate contains high amounts of naturally occurring BCAAs and healthy whey fractions such as immunoglobulins, lactoferrin, and glycomacropeptides that provides the building blocks to support muscle recovery, repair, and growth.