Vitamin A is related to growth and reproduction, and is an indispensable material of epithelial cells. The lack of vitamin A will cause cortex keratosis, rough skin, night blindness and dry eye.
 
Vitamin B1 is in charge of carbohydrate metabolism. The lack of vitamin B1 will make the substance not metabolized accumulate in the tissues to result in poisoning, athlete's foot, feet numbness, edema and weakened functions of muscle, skin or heart.
 
Vitamin B2 is in charge of fat and protein metabolism and detoxification in the liver. The lack of vitamin B2 will cause decreased growth and skin type and mouth type digestive disturbances.