PureTrace Certified. Authenticate your PureTrace certified cod liver oil online before consuming. PureTrace assures your product's authenticity, quality and safety. Every bottle is individually coded and can be traced from manufacturing to your hand. Includes a copyrighted product information sheet to help you get the most value from your cod liver oil. Green Pasture Blue Ice Fermented Cod Liver Oil is a superfood containing natural vitamins A and D, EPA, DHA and many as yet undiscovered nutrients (such as naturally occurring metabolites and co-factors). Green Pasture Blue Ice Fermented Cod Liver Oil is the industry's only all-natural raw cod liver oil supplement, fermented and extracted in the old-world style without the use of heat or chemical solvents.