Which Cod Liver Oil Should I Use? BIOSEA COD LIVER OIL Additionally, many brands of cod liver oil have been highly processed, deodorized, bleached and as a result of dwindling vitamin content at this point, they have synthetic vitamins added back in. So much for being a traditional food supplement! Interestingly, one reason to pay attention to the A to D ratio is that vitamin D is actually protective retinol (vitamin A) toxicity, a concern to some. So cod liver oil, eaten as a the whole, natural food that it is particularly safe in that regard. If you're concerned about vitamin A toxicity, this is a good read. Long, but helpful.

Which Cod Liver Oil Should I Use?
BIOSEA COD LIVER OIL
Additionally, many brands of cod liver oil have been highly processed, deodorized, bleached and as a result of dwindling vitamin content at this point, they have synthetic vitamins added back in. So much for being a traditional food supplement!
Interestingly, one reason to pay attention to the A to D ratio is that vitamin D is actually protective retinol (vitamin A) toxicity, a concern to some. So cod liver oil, eaten as a the whole, natural food that it is particularly safe in that regard. If you're concerned about vitamin A toxicity, this is a good read. Long, but helpful.