Immunoglobulin is a substance that improves the immunity of the body, and its effective infusion can improve the body’s resistance to bacteria, viruses, fungi and autoimmune diseases. The dose of immunoglobulin is generally limited to 0.4 mg/kg, and for the maintenance treatment of remission patients, 200-300 mg/kg can be used for infusion to improve the immunity of the body, and its half-life is generally about 1 month, and the effectiveness of the drug will decline after 1 month or so, so it is important to improve your immunity.