Patients suffering from chronic hepatitis B, various upper respiratory tract infections and rheumatoid arthritis can take thymopeptide enteric-coated tablets. Thymopeptide enteric-coated tablets are mainly composed of thymic peptide, which is a biologically active peptide extracted from calf thymus gland and can improve human immunity. It is mainly used to treat chronic hepatitis B, various diseases caused by lowered immunity, such as oral ulcers, various upper respiratory tract infections, and also has a therapeutic effect on various autoimmune diseases, such as systemic lupus erythematosus and rheumatoid arthritis. Common adverse reactions to the drug include chest tightness, nausea, fever, and mild hepatic function abnormalities, with the vast majority of patients recovering completely after discontinuing the drug. It is contraindicated in patients who are allergic to thymus peptide, in the presence of thymic tumors or thymic hyperfunction, and in patients with organ transplants. In addition, the drug should be swallowed whole, not chewed or broken to avoid destroying the enteric structure, resulting in the loss of efficacy. It is recommended to use the drug under the guidance of a doctor, not blindly self-medication, in order to avoid adverse effects.