How many months does it take to be effective, depending on the severity of the patient’s condition, individual constitution and sensitivity to the drug, the exact duration varies from person to person. Astragalus mainly contains nutrients such as astragalus polysaccharide and oleanolic acid, which have the effect of improving and regulating the immunity of the body. When taken by those with low body immunity, it can act faster, generally 1 month will have certain efficacy, in order to achieve the best effect, it needs to be extended for 2-3 months. For malignant tumor patients, according to the doctor’s guidance, in order to resist some side effects caused by radiotherapy and improve the body’s resistance, it takes a longer time to take it, and it usually takes about 3-6 months to have a better effect. In addition, patients need to pay attention to the side effects of allergy caused by Jeong Qi. For those who are allergic, it is recommended not to take it in order to avoid other serious side effects.