You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Zafirlukast used in asthmatic patients acts by and explain in detail?
Drugs for Bronchial AsthmaMechanism of actionDrugsBronchodilators b2 sympathomimetics Salbutamol, Terbutaline, Bambuterol, Salmeterol, Formoterol, Ephedrine Methylxanthine Theophylline, Aminophylline, Choline theophyllineAnticholinergics Ipratropium bromide, Tiotropium bromide Leukotriene antagonist Montelukast, Zafirlukast Mast cell stabilizers Sodium cromoglycate, Ketotifen Coicosteroids Systemic Hydrocoisone, Prednisolone Inhalational Beclomethasone, Budesonide, Fluticasone, Flunisolide, Ciclesonide Anti IgE antibody Omalizumab (Refer: Rang and Dale's Clinical Pharmacology, 7th edition, pg no: 345)