The very existence of the essential vitamin D, or “sunshine vitamin,” was not established until the present century, but its imprint upon history goes back a million years or more. According ...

Vitamin K is a group of fat-soluble vitamins required for the synthesis of proteins needed for blood coagulation and for the proteins required for calcium binding in bones and other tissues ...

THE term vitamin P was proposed by Armentano and his co-workers 1 to denote a group of compounds distinct from ascorbic acid that maintained the physical strength of capillaries. This concept grew ...

Vitamin D exists in two forms, vitamin D2 and vitamin D3, which differ in the structure of their side chains that are known as ergocalciferol and cholecalciferol, respectively. Image Credit: Peter ...