Leonurus japonicus, commonly called oriental motherwort or Chinese motherwort, is a herbaceous flowering plant native to Asia, including Korea and Japan, and China to Cambodia. Uses It is one of the 50 fundamental herbs used in traditional Chinese medicine, where it is called yìmǔcǎo (Chinese: 益母草), literally “beneficial herb for mothers”. It is used in cases of menstrual and delivery disorders caused by blood stasis, like dysmenorrhea, and amenorrhea. Leonurus japonicus,