Vitamin C is an essential vitamin for the body and has many roles and effects: 1. Vitamin C can promote the absorption of iron in the digestive tract, assist in the treatment of iron deficiency anemia, and has a certain effect on the treatment of scurvy. 2. Vitamin C for the endocrine system, conditioning and improving the state of the endocrine system, increasing the body’s immunity and resistance, and can also initiate the role of detoxification. 3, Vitamin C for the role of the respiratory system, enhance the respiratory endothelial cells antiviral ability, enhance the body’s tolerance to respiratory diseases, reduce the incidence of upper respiratory tract infections. 4, vitamin C for the function of the nervous system, has a stable endothelial function of the nervous system, so that nerve cells tend to stabilize, to avoid insomnia, excessive dreaming and other neurological diseases.