This medication prevents and reduces or eliminates bronchospasm, reduces the resistance in the airways, increases the vital capacity. It prevents the release of histamine, slow reacting substance from mast cells and factors chemotaxis of neutrophils. Compared with other drugs of this group has a less pronounced positive chrono-and inotropic effect on myocardium. It widen of coronary arteries, practically does not reduce blood pressure. Has tocolytic effect, lowering the tone and the contractile activity of the myometrium.