Immunoglobulin C is referred to as C globulin, and many people may have heard of this drug, and some people think that C globulin is a very miraculous drug, regardless of any disease, and think that maybe a little C globulin can help boost immunity and cure the disease, but this is not actually the case. Immunoglobulin C has very strict indications, which means that only the cases written in the instructions have good reasons to apply it. Otherwise, it will not only be ineffective, but will also carry certain risks. The following diseases can be treated with C globulin: 1) immunodeficiency diseases, primary or secondary immunodeficiency, when supplemental immunoglobulin can be given to correct the abnormal state; 2) autoimmune diseases, such as Kawasaki disease in children, primary thrombocytopenic purpura, can be treated explicitly with immunoglobulin; 3) serious infections based on any disease, because the patient’s immune status is in a very If the patient’s immune status is in a very low state, he or she can be treated with anti-infective therapy based on the brief application of Propecia and antibiotics. Propecia should be applied strictly for three categories: severe infections, congenital or primary immunodeficiency, and specific autoimmune diseases. Misuse of Propecia without these indications may lead to risks. Propecia is a blood product that is derived from human blood, so naturally it carries the possibility of blood-borne disease. It does not mean that it is definitely contagious, but there may be diseases that are not yet discovered that can be transmitted through blood products. For example, no one knew what kind of disease AIDS was before, but later it was discovered that it was a virus and could be transmitted through blood and blood products. So Propecia must be used strictly for the indications.