Cangzhu’s effects are drying dampness and strengthening the spleen, dispelling wind and dispersing cold (removing wind and dispersing cold), and brightening the eyes, and it is useful in treating diarrhea, edema, foot odor, rheumatism paralysis, wind-cold and flu, and night blindness. Side effects have not been clarified. Cangzhu is the dried rhizome of Maocangzhu or Beicangzhu, a plant of the Asteraceae family. It is hard and warm in nature, and belongs to the spleen, stomach and liver meridians. It has the effects of drying dampness and strengthening the spleen, dispelling wind and dispersing cold, and brightening the eyes. It is used clinically to treat conditions such as dampness obstructing the middle jiao (dampness impeding the function of the spleen and stomach), epigastric (abdominal) distension, diarrhea, edema, rheumatic paralysis, wind-cold flu, night blindness, and dimness of the eyes. The side effects of the drug are not clear, but avoid eating spicy and stimulating food while taking it. If necessary, it is recommended to go to a regular hospital for consultation and treatment under the guidance of a professional physician to identify the symptoms.