Immunoglobulin therapy is a medical treatment that uses antibodies, which are proteins produced by the immune system, to help fight infections and diseases. This therapy is often used for patients with weakened immune systems, such as those with primary immunodeficiency disorders or certain autoimmune diseases. The antibodies can be derived from the blood of healthy donors and are administered through injections or infusions. The therapy works by providing the patient with the necessary antibodies to enhance their immune response. It can help reduce the frequency and severity of infections, improve overall health, and support the immune system in fighting off diseases.