The efficacy and action of Tacrolimus capsules is to suppress the body’s overwhelming immune response. Some diseases in the human body are caused by immune disorders, such as systemic lupus erythematosus, nephrotic syndrome, chronic glomerulonephritis, and so on. These diseases are caused by immune disorders in the body that produce many abnormally proliferating antibodies that come to attack the corresponding organs, leading to the occurrence of these diseases. In order to suppress the production of these antibodies and to protect the organs from the attack of these antibodies, hormones and immunosuppressants are mainly used together in clinical treatment. Tacrolimus capsules are one type of immunosuppressant that can inhibit the body’s overpowering immune response and reduce the concentration of these harmful antibodies, thus protecting the organs from attack. However, because it is an immunosuppressant that suppresses excessive immunity while also lowering one’s own resistance, patients are prone to infections and complications with tumors. In addition, this disease is capable of causing an increase in blood sugar, so it is important to monitor blood sugar during application.