Thanks!

I've heard of Carlson's cod liver oil. Funnily enough, I used Nordic Naturals fish oil (really good), but I had some issues with their cod liver oil and I'm not sure why.....it may have had nil to do with mercury but something else or the distillation process that may have made it more difficult to ingest the oil straight. Since I take the fish oil in capsules, but usually find cod liver oil is straight oil.

I tend to stick to their fish oil instead. But I know cod liver oil is very good because it contains vitamin A and D. One should make sure they are naturally occuring, rather than removed and then supplemented back into the oil unnaturally.

There are quality brands out there, but one has to locate them.

I'd recommend checking the links on this link for those interested.
http://www.healingnaturallybybee.com/articles/menu6_1_1.php