Transfer Factor Oral Solution is an oral solution mainly used to improve the immunity of human body and achieve the health care purpose of health promotion and disease prevention. It has a wide range of clinical applications and is commonly used to treat viral infections, bacterial infections and mycotic infections. It can be used to treat herpes zoster, epidemic encephalitis B, Candida albicans infection, viral myocarditis, etc. It can also be used to treat complications related to malignant tumors, to improve immunity to malignant tumors, and to treat eczema, thrombocytopenia, and other immunodeficiency diseases with reasonable medication.