Brand Name:  Airvent-Xt  Tablets                                                                                                                 Composition: Acebrophyline 50 mg + Guaiphenesin 50 mg + Terbutaline 1.25 mg Description: Acebrophylline belongs to a class of drugs called bronchodilators and is used primarily to prevent and treat symptoms of asthma, chronic obstructive pulmonary disease (COPD), and other lung diseases. Montelukast is a prescription medicine used to treat asthma and seasonal allergies. It blocks the effect of leukotrienes, a type of inflammatory chemical messenger.