https://gameplan.com/whey All proteins are not created equal. Whey protein has been proven to be the most effective form, and consuming more in your diet means increased muscle definition, less dangerous buildup of fats, and an overall increase in energy and drive. Our whey is the purest protein isolate--NSF Certified--made naturally from milk never treated with hormones like rBGH. With all-natural ingredients, almost no fat, and a taste you look forward to, Whey is the obvious choice of protein... Enjoy in abundance.