The full name of Zhi Bai is Zhi Bai Di Huang Wan, which is a proprietary Chinese medicine that nourishes yin and reduces fire (nourishes yin essence and reduces fire). There is no definite answer as to how long it should be taken at most, but it is recommended that it be taken for 4 weeks, and then continue to be taken if it is effective. Zhi Bai Di Huang Wan is composed of ze diarrhea, yam, cypress, mudanpi, the system of cornelian cherry, poria, ripened dihuang, Zhi Mu. It can be used to treat night sweats (abnormal sweating after going to sleep, stop sweating after waking up), hot flashes (a burst of fever), short and red urine (small amount of urine, dark yellow color), spermatorrhea, tinnitus, dry mouth, sore throat, etc. It can also be used to treat the symptoms of hyperactivity and hypercalcemia. The adverse reactions and contraindications of the drug are not clear. It should not be taken if you have a cold or fever. It is recommended to take Zhi Bai Di Huang Wan for 4 weeks, if there is no effect, stop the medicine in time and consult a doctor, if there is an effect but not cured or completely improved, you can continue to take the medicine under the guidance of a doctor, who will consider the duration of the medicine according to the situation of the medicine.