Motherwort

Leonurus cardiaca, known as motherwort, is an herbaceous perennial plant in the mint family, Lamiaceae. Other common names include throw-wort, lion's ear, and lion's tail. Lion's tail also being a common name for Leonotis leonurus, and lion's ear, a common name for Leonotis nepetifolia.
Originally from Central Asia and southeastern Europe, it is now found worldwide, spread largely due to its use as a herbal remedy.
Motherwort has a long history of use as an herb in traditional medicine in Central Europe, Asia, and North America.Like many other plants, it has been used for a variety of ills. Midwives use it for a variety of purposes, including uterine tonic and prevention of uterine infection in women, hence the name Motherwort.

The herb contains the alkaloid leonurine,which is a mild vasodilator and has a relaxing effect on smooth muscles. For this reason, it has long been used as a cardiac tonic, nervine, and an emmenagogue.Among other biochemical constituents, it also contains stachydrine, bitter iridoid glycosides (leonuride), diterpinoids, flavonoids (including rutin and quercetin), tannins, volatile oils, and vitamin A.

Susun Weed recommends it for combating stress and promoting relaxation during pregnancy, also claiming that, given during labor, it prevents hemorrhage. Michael Tierra, on the other hand, contraindicates it for internal use during pregnancy, claiming that it has the tendency to cause bleeding and may induce miscarriage. It was historically used in China to prevent pregnancy and to regulate menstruation.Motherwort is also used to ease stomach gas and cramping, menopausal problems, and insomnia,although Susun Weed warns it may be habit forming if used regularly to combat sleeplessness.