This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Asthma, Subject name: Pharmacology
[{'content': 'Beta 2 agonist used in rescue therapy in acute respiratory conditions are all except - \nSelect and explain. \nA. Terbutaline, B. Salbutamol, C. Bambuterol, D. Ketotifen', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Ketotifen BronchodilatorsDrugs reducing inflammationa) b2 SympathomimeticsLeukotriene antagonistsMast cell stabilizersCorticosteroidsAnti-IgE antibodyo Salbutamolo Terbutalineo Montelukasto Sodium cromoglycatea) Systemico Omalizumabo Bambuteralo Salmeterolo Zafirlukasto Ketotifeno Hydrocortisone o Formoterolo Ephedrine o Prednisolone b) Inhalation b) Methylxanthines o Beclomethasome o Theophyllineo Aminophylline o Budesonide o Doxophylline o Fluticasone c) Anticholinergics o Flunisolide o Ipratropiumo Tiopratropium o Ciclesonide", 'role': 'assistant'}]