The recommended dosage of Cistanche is 10-15 grams. It is recommended to take it by decoction as the active ingredients extracted from the water are limited. Cistanchis are the fleshy stems of Cistanchis and Cistanche tubiflora in the genus Cistanchis of the family Ledebouriidae. It is warm in nature, sweet and salty in taste, and belongs to the kidney and large intestine meridians. Cistanchis is effective in tonifying kidney yang, benefiting essence and blood, and moistening the intestines. It is suitable for impotence caused by deficiency of kidney yang (deficiency of yang in the kidneys) and essence and blood, spermatorrhea, frequent urination and dysuria, lumbago and foot pain, tinnitus and blurred eyes, infertility with uterine cold, and constipation due to dryness of the intestines and bowels. Cistanchis can be used internally by decocting soup, or adding into pills or powder. It is not recommended to take Cistanchis for those who have excessive fire, such as tinnitus, dry mouth, hot flashes in the hands and feet, sweating, dizziness, diarrhea and constipation. It is recommended to take Cistanchis under the guidance of a doctor in order to avoid any misunderstanding or adverse reaction.