What is the effect of black woodruff?

Black Bupleurum is used to treat colds and fever, chest pain (swelling and pain in the chest and rib area), menstrual irregularities and other conditions.
Black Chaihu is a plant of the genus Chaihu in the family Umbelliferae. It is slightly cold in nature, pungent and bitter in flavor, and belongs to the liver and gallbladder meridians. Black Chaihu has the effects of relieving fever, relieving the liver and depression, and elevating yang to lift the sunken organs.
Black Bupleurum can be used for treating colds and fever caused by wind-cold and wind-heat; it belongs to the liver and gallbladder meridians and can be used to treat chest and hypochondrium distention and pain, irregular menstruation caused by liver depression and stagnation of qi; and it can also elevate yang and lift the sinking of the body, and can be used for treating uterine prolapse, epigastric and abdominal distension (swelling of the stomach, epigastrium, and abdomen), prolapse of the anus, and other conditions caused by lack of middle qi (weakness of the qi of the spleen and stomach).
Black Chai Hu needs to be applied reasonably according to the doctor’s instructions, and should not be used on its own to avoid adverse consequences.