Static C is intravenous human immunoglobulin, commonly known as C-globulin, which can improve immunity. Injection of human immunoglobulin belongs to a kind of passive immunotherapy, is the immunoglobulin contains a large number of antibodies to the human body, so that the human body from the low or no immune state quickly reached a temporary immune protection state, but also can make the antibody and antigen combination to play a neutralization of toxins and kill bacteria and viruses. Therefore, immunoglobulin has a certain effect on the prevention of bacterial and viral infections. Adverse reactions mainly include redness, swelling and pain at the injection site, and it is prohibited for those who are allergic to immunoglobulin and its components, and for those who have selective IgA deficiency against IgA antibody. Precautions: It should be stored at low temperature and generally used for intramuscular injection. If you need to use it, it should be used correctly under the guidance of a professional doctor, do not use it blindly on your own, so as not to affect your health.