Question: what is the best cod liver oil supplement?
Answer: What we dislike: Contains much less omega-3s than more expensive or liquid brands.
Choice 3: Carlson's Cod Liver Oil.
Our take: A liquid cod liver oil without the fishy aftertaste and loaded with omega-3s.
What we like: Sourced from wild-caught fish. ... 
What we dislike: Contains synthetic vitamins.