True about zafirlukast is
Refer KDT 6/e p 222 Zafirlukast and Montelukast are cysteinyl Leukotriene receptor antagonist They cause modest improvement in lung function and reduction in asthma symptoms and lessen the need for beta agonists rescue therapy These drugs can be considered in patients with persistent asthma Zafirlukast is long acting and can be given twice to once daily orally It is a modest bronchodilator
It inhibits lipoxygense
It blocks LT receptor
It can be admistered orally
All of the above
Respiratory system