Vitamin A can maintain our normal eyesight, especially at night when dark vision plays an important role. 2, vitamin B can make our skin and heart function stronger, if the B vitamin deficiency, it will show skin roughness or heart failure caused by an edema. 3, vitamin D can play a good role in promoting calcium absorption. 4, vitamin E is also called tocopherol, for the maintenance of normal reproductive function, vitamin E plays an important role. 5, vitamin C is another name for ascorbic acid, for the prevention of swollen gums, bleeding gums and scurvy, vitamin C plays a very important role. So vitamins of this type of nutrients are very important for the normal functioning of the body.