Cistanchis has the effect of moistening the intestines and relaxing the bowels, and can be used for intestinal dryness and constipation, but not for other types of constipation. Cistanchis is the dried fleshy stem with scaly leaves of Cistanchis or Cistanchis tubiflora in the family of Ledebouriidae, which is sweet, salty and warm in nature. It belongs to the kidney and large intestine meridians. It has the effects of tonifying kidney yang, benefiting essence and blood, moistening the intestines and relieving constipation. It is used in treating deficiency of kidney yang (lack of yang energy in the kidneys), deficiency of essence and blood, impotence and infertility, lumbar and knee soreness (feeling of soreness and weakness in the lumbar and knee areas), weakness of sinews and bones and constipation of dry intestines and bowels. In case of constipation, please go to the hospital immediately to seek professional medical advice and follow the doctor’s instructions for treatment. The specific use of the drug should be under the guidance of a medical professional.