This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anti Histaminics, Subject name: Pharmacology
[{'content': 'Montelukast is a - \nSelect and explain. \nA. Leukotriene antagonist, B. Mast cell stabilizer, C. Anti IgE antibody, D. Lipoxygenase inhibitor', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Leukotriene antagonist Drugs used in asthmaBronchodilatorsDrugs reducing inflammation Leukotriene antagonistsMast cell stabilizers CorticosteroidsAnti-IgE antibodya)B2Sympathomimetics* Montelukast* Zafirlukast* Sodium cromoglycate* Ketotifena)Systemic* Hydrocortisone* Prednisolone* Omalizumab* Salbutamol* Bambuteral* Formoterol* Terbutaline* Salmeterol* Ephedrineb)Inhalation* Beclomethasome* Budesonide* Fluticasone* Flunisolide* Ciclesonideb)Methylxanthines* Theophylline* Doxophylline* Aminophyllinec)Anticholinergics* Ipratropium* Tiopratropium* Selective PGE4 inhibitors are under clinical trial as antiasthma drugs. These are cilomilast, roflumilast and tofimilast.", 'role': 'assistant'}]