Chasteberry, Radix Rehmanniae Praeparata and Rhizoma Polygoni Multiflori together in water has the effect of nourishing kidney yin and tonifying the stroke. It is mainly used for the soreness of the waist and knees, internal heat and thirst (internal fever accompanied by eating, drinking, urinating and other symptoms) and other diseases. However, the efficacy of the drug in water is limited, the active ingredients are difficult to fully analyze, it is recommended that the use of decoction under the guidance of a doctor. 1. Chasteberry has the effect of nourishing the liver and kidneys, brightening the eyes and darkening the hair. It is mainly used for Yin deficiency of the liver and kidney, dizziness and tinnitus, lumbar and knee pain and weakness, premature whitening of the beard, darkening of the eyes, internal heat and polyuria, polyphagia, emaciation, bone vapor and tidal fever (feeling that there is heat emanating from the inside of the bone to the outside). Its adverse effects and contraindications are not clear at present. 2. Radix Rehmanniae Praeparata has the efficacy of tonifying blood, nourishing yin, benefiting the essence and filling the marrow (tonifying the kidney essence to nourish the brain marrow). It is mainly used for pale or yellowish color, palpitation and restlessness, menstrual disorders, deficiency of yin in liver and kidney, lumbar and knee soreness and weakness, bone vapor and tidal fever, nocturnal sweating and spermatorrhea, emaciation, dizziness, tinnitus, and other disorders. It should be noted that it is not recommended for people with stagnant qi and phlegm, dampness and fullness (too much dampness leading to fullness and discomfort in the spleen and stomach), and loose stools (scanty and unformed feces). 3. Rhizoma Polygonati Odorati has the effects of tonifying qi and nourishing yin, strengthening the spleen, moistening the lungs and benefiting the kidneys. It is mainly used for deficiency of spleen and stomach qi, tiredness and fatigue, deficiency of stomach yin (insufficient yin fluid in the stomach), dry mouth and little food, lung deficiency and dry cough, coughing and coughing up blood, deficiency of essence and blood, lumbar and knee soreness, emaciation, and other diseases. Therefore, it should be used with caution for those with spleen deficiency and dampness obstruction and phlegm-dampness congestion. The effect of infusion is not as good as decoction, please take Chinese medicine under the guidance of a physician, do not take it on your own, so as not to delay the condition.