Contributes to the normal function of the heart and the immune system. Maintains normal skin, vision, bones and teeth. Cod Liver Oil contains Omega 3 essential fatty acids, including EPA and DHA which contribute to the normal function of the heart. The beneficial effect is obtained with a daily intake of 250mg of EPA and DHA. Vitamin A contributes to the maintenance of normal skin, normal vision and normal function of the immune system. Vitamin D contributes to the maintenance of normal bones and teeth.