Naturally Flavored with Other Natural Flavors - Nutricost Quality Guaranteed - Third Party Tested - GMP Compliant Facility - Non-GMO ProductGluten-FreeIf you’re trying to gain muscle in the most efficient way possible, whey protein isolate is the only way to go. Whey protein ...Naturally Flavored with Other Natural Flavors - Nutricost Quality Guaranteed - Third Party Tested - GMP Compliant Facility - Non-GMO ProductGluten-FreeIf you’re trying to gain muscle in the most efficient way possible, whey protein isolate is the only way to go. Whey protein isolate is more heavily refined than whey protein concentrate, meaning that every scoop of isolate contains higher concentrations of protein than a scoop of concentrate.