Cod Liver Oil is a good, natural source of vitamins A and D. Vitamin A plays a major role in our visual system, where it is necessary for the normal functioning of our eyes and vision. Vitamin A also affects growth and development of our lungs, teeth, gums and skin, and is essential for proper immune function. Vitamin D is necessary for bone development and plays a principal role in the proper absorption of calcium. The main sources of Vitamin D are food and sunlight. Since we are able to pro