Webber Naturals Cod Liver Oil Vitamin A and D Softgels help maintain eyesight, skin, night vision and immune function. Cod liver oil provides a natural source of Vitamins A and D and a minor source of essential fatty acids. Vitamin A is necessary for the health and protection of eyesight, skin, and supports the development of teeth, bone and hair. Vitamin D contributes to mineral absorption for the maintenance and development of teeth and bones.