Vitamin D (Vitaminum D)
It was first obtained from vegetable oil. Vitamin D is abundant in fish, seafood, fish oil, pork and beef liver, cottage cheese, cheese, nettles, potatoes, oatmeal, nuts, and linseed oil. At present, vitamin D2 (ergocalciferol) and vitamin D3 (cholecalciferol) are of practical importance. In humans, vitamin D is formed in the surface layers of the skin under… Read More »