Certified Grass Fed Whey is designed to refuel and repair muscles. Intensive training and exercise breaks down muscle tissue and then the body repairs and rebuilds to make them stronger. Our premium quality, clean Certified Grass Fed Whey is not only free of hormones and antibiotics, but we are also very proud to have the ONLY Non- GMO Project Verified Whey. Due to these third-party certifications, Certified Grass Fed Whey is also NSF Certified for Sport and Informed-Choice for Sport Certified. You can rest assured there are no athletic banned substances in this clean whey protein.