Combined drug, has astringent, antacid, spasmolytic and mild laxative effect. Magnesium carbonate basic and sodium hydrogen carbonate reduce the acidity of gastric juice, reduce the activity of pepsin.Bismuth nitrate forms a protective film on the gastric mucosa, providing an anti-inflammatory, bactericidal, reparative effect. Aira rhizome exerts spasmolytic action, buckthorn bark - laxative.