Transfer factor is generally 2~4 weeks for a course of treatment, the specific how long a course of treatment varies from person to person, related to the patient’s condition. Transfer factor is a relatively common immunomodulatory drugs, often used in autoimmune diseases, allergic diseases, malignant tumors, radiotherapy adjuvant therapy, can improve the body’s immune ability, most of the time 2 to 4 weeks is a course of treatment, can effectively improve the patient’s immune function. However, the specific dosage time needs to be combined with the patient’s condition and response to the drug, if the patient’s symptoms are relieved by the drug, and the condition is stable, generally can continue to use. If a serious adverse reaction occurs during the process of using the drug, it is generally necessary to interrupt the treatment program. Drugs need to be used under the guidance of a doctor, must strictly cooperate with the doctor, and pay attention to observe whether the body has adverse reactions.