Vitamin-K is essential for clotting of blood. It is necessary for the synthesis of various blood clotting factors like prothrombin (II), proconvertin (VII), stuart power factor (X) times Christmas factor. It is obtaned from cabbage, spinach and other green leafy vegetables. Vitamin-A is necessary for synthesis of rhodopsin of rod cells and iodopsin of cone cells of the retina of eye. Vitamin-D promotes absorption of calcium and phosphorus by the intestine. It maintains the normal functioning of parathormone. Vitamin-B (B1) serves as a co-enzyme in the conversion of pyruvate into acetyl co-A and - ketogluterate.