This product is a rich source of Vitamins A & D together with Omega 3 essential fatty acids, EPA an DHA. The anti-inflammatory action of the Omega 3 EFA's together with the beneficial action of Vitamin A on skin, immunity and all mucous membranes and Vitamin D on bone and dental health make this supplemet one which should be given regularly to most dogs and cats. Recommended dosages must be adhere to and it should not be given during pregnancy except on veterinary advice.