The main effects of Cistanche are tonifying kidney yang, benefiting essence and blood, and laxative. How many days to see the effect of taking Cistanchis varies from person to person, there is no clear statement, and it is related to the severity of the disease and other factors. Please follow your doctor’s advice when taking the medication. Cistanchis is a yang tonic, sweet, salty and warm in nature, and belongs to the kidney and large intestine meridians. It is mainly used to treat impotence, infertility, lumbar and knee soreness (a feeling of soreness and weakness in the waist and knees) caused by deficiency of kidney yang (lack of yang energy in the kidneys) and essence and blood, as well as constipation caused by deficiency of fluid. Cistanchis can be combined with Lock Yang to treat impotence and cold pain in the waist and knees due to kidney deficiency; with Cornu Cervi Pantotrichum to treat impotence and weakness in the waist and knees due to kidney deficiency; with Cortex Eucommiae to treat vague pain in the waist due to kidney deficiency; with Fo Ma Ren to treat constipation due to deficiency of qi and blood; and with Cortex Psoralea to treat premature ejaculation due to deficiency in the kidneys, and infertility. Adverse effects of this product are not clear. Cistanchis should not be taken by people with yin deficiency (deficiency of yin and essence in the body, resulting in hyperactive fire), diarrhea, or constipation due to heat. Patients are advised to seek prompt medical advice if they feel unwell, so as to avoid any delay in their condition.