Cistanchis Powder is made from powdered Chinese herbal medicine Cistanchis and can be taken at night. Cistanchus is sweet, salty and warm in nature. It belongs to kidney and large intestine meridians. It has the effects of tonifying kidney yang, benefiting essence and blood, and moistening the intestines and laxatives. It is mainly used for treating kidney yang deficiency (lack of yang in the kidneys), lack of essence and blood, uterine coldness and infertility, impotence and premature ejaculation, lumbar and knee pain, impotence and weakness, and intestinal dryness, fluid depletion, constipation and other diseases. However, it is not suitable for patients with yin deficiency (deficiency of yin and essence in the body with hyperactivity of deficiency fire), loose stools and constipation with hot constipation. Cistanchis Powder can be taken at night, and there is no relevant literature or report stating that Cistanchis Powder taken at night will cause harm to patients. It should be noted that if patients need to take Cistanchis Powder, it is recommended to take it under the guidance of a doctor to avoid delaying the condition.