Leonurus sibiricus is an annual herb, it grows to a height of 2m. Marihuanilla is native to East Asia and South East Asia, naturalized in Central America.

The whole plant is antibacterial, antispasmodic, astringent, cardiac, diaphoretic, diuretic, emmenagogue, hypnotic, oxytocic, stomachic, tonic and uterine stimulant. In chinese medicine this plant is utilised for the relief of menstrual pain and excessive menstrual bleeding.

The dried herb and flowers are used as a smoking herb.