COSTUS-AP SYRUP with powerful formulation of Acebrophylline 50mg + Terbutaline 1.25mg + Guaiphenesin 50mg is making it an effective treatment for respiratory conditions associated with cough, mucus, and breathing difficulty. Acebrophylline helps relax the airways and reduces inflammation, Terbutaline acts as a bronchodilator to ease breathing by opening the air passages, and Guaiphenesin works as an expectorant to loosen and clear mucus from the respiratory tract.