Plantain leaves contain aucubin glycoside, bitter and tannins, carotene, vitamins C and K, citric acid. They have anti-inflammatory, analgesic and secretolytic effects in diseases of the respiratory organs, accompanied by the secretion of thick secrets, for example, in chronic catarrh of the lungs, in violation of the digestive organs (diarrhea, catarrh of the gastrointestinal tract, flatulence, colic, duodenal ulcer). Psyllium preparations have a tonic effect, stimulate appetite, and increase hemoglobin in the blood. The plant extract has an anti-sclerotic effect, reduces blood cholesterol. Plantaglucide granules are obtained from an aqueous extract of large plantain. It is a powder of grayish color and bitter taste, soluble in water; 3 times a day, 0.5-1 g per oral dose is prescribed for the prevention of seasonal exacerbations of peptic ulcer. As a remedy, plantain was taken from traditional medicine and has been used as an infusion for a long time. At present, plantaglucid, as well as juice from the fresh leaves of large plantain, are considered to be better medicines.