Vitamin is a trace organic substance that people and animals must obtain from food in order to maintain normal physiological functions, and it plays an important role in the process of human growth, metabolism and development. Insufficient vitamin intake in daily diet will win vitamin deficiency first, such as:

Vitamin A deficiency: night blindness, keratoxerosis, dry skin, desquamation.

Vitamin B 1 deficiency: neuritis, beriberi, anorexia, dyspepsia, growth retardation.

Vitamin B2 deficiency: oral ulcer, dermatitis, angular stomatitis, glossitis, cleft lip, keratitis, etc.

Vitamin B 12 deficiency: megaloblastic anemia

Vitamin C deficiency: scurvy, decreased resistance.

Vitamin D deficiency: rickets in children and osteoporosis in adults.

Vitamin E deficiency: infertility, abortion, muscular atrophy, etc. Therefore, it is necessary to supplement the right amount of vitamins.

If your daily diet has met your body's needs, don't supplement it blindly. Excessive vitamins will do harm to your body, such as vitamin A. Adults who consume more than 50000IU a day for several months will cause poisoning. If children consume more than 18500IU a day, it will cause poisoning. Therefore, vitamin supplementation needs to be determined according to the individual's physical condition and supplemented under the guidance of professionals.