Natures Aid Cod Liver Oil (High Strength) 1000mg 90`sEach 1000mg capsule of our high strength Cod Liver Oil is a source of Vitamin A, Vitamin D and Omega 3 fatty acids including DHA and EPA. Vitamin D helps to maintain normal blood calcium levels, normal immune function, normal muscle function and the maintenance of normal teeth, while Vitamin A contributes to normal skin, normal vision and the normal function of the immune system. It also supports the function of your mucous membranes, found throughout