t purify it, meaning you get more than just the
omega 3 oils, but that means you get less of the
omega 3 oils and have to take more of them, and they are expensive. Cod liver oil shouldn't be taken regularly -- it can have a laxative effect, and the liver is a detoxification organ, meaning toxins accumulate there. It can be good for skin problems and other things, but for basic omega 3 you don't want liver oil.