Offering Only the Best! Since 1990, the Jay Robb Corporation has been producing what is felt to be the best protein powders on the planet. To the best of the Jay Robb Corporation's knowledge, they were the first company in the world to create a whey protein powder made from cows not treated with rBGH (a synthetic growth hormone). Because rBGH-free whey is primarily obtained from small farms throughout the world, there is only a limited supply. The Jay Robb Corporation secures large quantities abroad each year to meet the growing needs; however, there are times when the world supply runs short. During these periods, Jay Robb Corporation may choose to procure the highest quality domestic whey protein in conjunction with rBGH-free raw materials to produce their world-class whey protein. Provides all the essential and branched amino acids, plus other naturally occurring amino acids.