Perennial herbaceous plant up to 1.5 m tall, with a gray pubescent, branched stem. The leaves are opposite, short-petiolate, dissected into 3-5 large lobes, large-shaped along the edges. All flowers are tubular, bisexual, narrowed at the base, dirty pink litharge, collected in apical few-flowered (5-6 each) baskets with oblong-cylindrical, tiled involucre leaves. Fruit with tuft of trichomes. Blooms in July-August.
Distributed in very damp places along streams and river banks.
Medicinal raw material is the whole plant with roots. The raw material contains some essential oil, the glycoside eupatin (eupatorin), and the roots also contain inulin.
In pharmacological and clinical terms, sedation has not yet been studied.
In folk medicine, it is used for diseases of the kidneys, gallbladder and spleen. It is also used in the initial stage of flu with fever, as a diuretic for edema, especially localized in the abdominal cavity and lower extremities, for respiratory diseases (chronic bronchial catarrh).
It is used as an infusion: 2 teaspoons of herbs are poured into 2 glasses of water; the infusion is drunk warm the next day, 1 glass 2 times every day.
A tincture or liquid extract is also prepared from the raw material.
It is applied externally in the form of gruel for the treatment of boils, bruises and skin rashes.