Cod Liver Oil with Vitamin A + D3 provides essential omega-3 fatty acids and high levels of vitamin A and DJamieson Cod Liver Oil with Vitamin A + D3 provides essential omega-3 fatty acids and high levels of vitamin A and D to help support eyesight and skin health, as well as helps to promote normal growth and development. reduce joint pain and improve symptoms of rheumatoid arthritis like joint stiffness and swelling