PURITY ABOVE ALL: Iso Whey ZERO is made with the purest cross-flow micro filtered whey protein isolate (WPI) possible, while it truly contains ZERO lactose, ZERO trans fat and ZERO sugar. Iso Whey ZERO, like all BioTechUSA products, consists of 100% safe, carefully selected nutrients. Some like it lean: The extremely high biological value of proteins makes Iso Whey ZERO absolutely unique in the BioTech USA product line. It"s perfect for athletes who aim for ultra-lean muscle gains as proteins contribute to muscle mass growth and muscle maintenance.