[Origin] White Paeony Root is the dried root of Paeonia lactiflora Pall. (Fam. Ranunculaceae). The drug is collected in summer and autumn, washed clean, removed from root stock, the lower part and rootlet, either peeled after boiled in water or boiled after peeled, and dried in the sun.[Action] To subdue hyperactivity of the liver and relieve pain, to nourish blood and regulate menstruation, and to check excessive perspiration.[Indications]Headache and dizziness; costal and abdominal pain; spasmodic pain of the limbs; anemia; menstrual disorders; spontaneous sweating and night sweating.