The chemical composition of knotweed diverse. He is considered a storehouse of plant protein, extractives, fiber, ash, sugars, resins, waxes, tannins. A lot of knotweed phosphorus, calcium, zinc, silicon, ascorbic acid, carotene. Discovered naphthoquinone, tocopherol, vitamin C, bioflavonoids, glycosides, organic acids.Salmon stated: 'Knotgrass is peculiar against spilling of blood, strangury and other kidney affections, it cools inflammations, heals wounds and cleanses and heals old filthy ulcers. The chemical composition of Knot grass is complex. The herb is considered to be a treasure of protein, cellulose, tannins and sugars. It also contains phosphor, calcium, zinc, ascorbic acid, silicon and carotin. That is why it is not a surprise that knotgrass is popular with physicians and dietitians. The plant is used as it is astringent, anti inflammatory, diuretic, antiseptic, anesthetic, expectorative, cholagogic, laxative, wound healing and febrifuge.