Vitamin D and K2

Cod liver oil naturally provides both vitamin D and K2 in a single food source, predating modern supplementation science. Vitamin D is essential for calcium absorption, bone mineralization, immune system activation, and deficiency in children causes rickets. Vitamin K2 directs calcium to bones and teeth and prevents pathological calcium deposition in arteries, joints, and kidneys. Vitamin D and K2 work synergistically: D increases calcium absorption while K2 directs that calcium to bones rather than soft tissues.