Cod liver oil is well-known for the essential role it plays in keeping the nervous, immune and cardiovascular system healthy. Nature's Bounty Cod Liver Oil Vitamin Supplement with Omega 3 and Vitamin A and D offers multiple health benefits. The supplement is created with cod liver oil, which naturally contains a rich amount of omega-3 fatty acids. Supplement works to promote the health and strength of bones and immune system. It contributes in the use of phosphorous and calcium by promoting their absorption in body. Additionally, it improves eyesight and night vision.