Vitamins include Vitamin A, B vitamins, Vitamin C, Vitamin D, and Vitamin E. Each vitamin has different functions and effects. 1. Vitamin A: It can treat night blindness, dry eyes and so on. 2. Vitamin B: It can be used to prevent and treat malnutrition, anorexia, beriberi, pellagra, etc. caused by B vitamin deficiency. 3. Vitamin C: antioxidant effect, can be used for the treatment of scurvy, can also be used for a variety of acute and chronic infectious diseases and purpura and other auxiliary treatment. 4. Vitamin D: improve the body’s absorption of calcium and phosphorus, promote body growth and bone calcification. 5. Vitamin E: can be used to treat pruritus, echinococcosis, infertility and so on. It is recommended to take vitamin supplements under the guidance of a doctor and follow the doctor’s instructions to avoid adverse consequences.