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Question: What is fermented cod liver oil, such as Blue Ice? Is it better than regular cod liver oil?
Answer: Fermented cod liver oil, such as Blue Ice (Green Pastures), is sometimes touted as a more natural, superior source of vitamins A and D, and the omega-3 fatty acids EPA and DHA. However, there does not appear to be any clinical evidence demonstrating that fermented cod liver oil is more beneficial than regular cod liver oil. And, unlike many regular cod liver oil supplements, most fermented cod liver supplements do not list their amounts of vitamin A, D, or EPA and DHA on the label, so there is no way to know exactly how much you are getting. For more information, plus our tests and comparisons of other cod liver oil supplements, see the Review of Vitamin A Supplements Including Beta-Carotene and Cod Liver Oil >>