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Xiao Yao Capsule (逍遥胶囊) is a traditional Chinese medicine (TCM) formula in capsule form, classified as a Chinese patent medicine. Its main ingredients include Bupleurum root (柴胡), Angelica sinensis (当归), White peony root (白芍), Atractylodes macrocephala (炒白术), Poria cocos (茯苓), Honey-fried licorice root (炙甘草), and Mint leaf (薄荷). The formulation is designed to "soothe the liver and strengthen the spleen, nourish blood, and regulate menstruation." It is primarily indicated for symptoms such as liver qi stagnation, chest/flank distension or pain, dizziness, loss of appetite, and irregular menstruation. The mechanism of action is based on TCM theory—regulating qi flow in the liver and spleen systems rather than targeting specific molecular pathways[3][4]. Xiao Yao Capsule has been widely used for gynecological disorders like premenstrual syndrome and menstrual irregularities associated with emotional stress or digestive weakness.
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