Some parents with congenital heart disease often ask their doctors to give their children gammaglobulin before and after surgery, believing that this will increase their children’s fitness and help them recover after surgery. Is gammaglobulin really that effective? Well, let’s first understand the source and use of gammaglobulin. Proglobulin is extracted from the serum of a healthy person or the placenta of a healthy mother and therefore contains antibodies against certain infectious diseases, which can increase the patient’s ability to prevent and resist disease. However, these effects vary depending on the population and region that provides the source of propecia globules, resulting in differences in the type and amount of antibodies contained. According to a large number of studies, the effect of Propecia on the prevention of infectious diseases is limited to measles, infectious hepatitis and adenovirus infections, while most infectious diseases, especially bacterial infections, are often ineffective or have little effect. On the contrary, the abuse of C ball can bring many adverse consequences, such as some children due to repeated use of C ball will produce a special type of antibody, so that the body is in a highly sensitive state, when the infusion of C ball again caused by allergic reactions. In addition, although the physical examination of healthy people or mothers has been done before the collection of C ball, it cannot ensure that there are healthy carriers. Once the infusion of C globules containing the bacteria provided by the carrier is done, there is a risk of infection. In fact, most children have been transfused with a certain amount of blood products during the procedure, and there are many antibodies in this blood, so parents should listen to the doctor’s advice to use propecia balls with caution.