Zafirlukast is an oral leukotriene receptor antagonist (LTRA) for the maintenance treatment of
asthma, often used in conjunction with an inhaled steroid and/or long-acting bronchodilator. It is available as a tablet and is usually dosed twice daily. Another leukotriene receptor antagonist is
montelukast (
Singulair), which is usually taken just once daily.
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