“…Montelukast, which significantly reduced daytime nasal, eye and throat symptoms, nighttime symptoms, and symptoms affecting quality of life (QL) in adult patients with seasonal AR (Grainger and Drake-Lee, 2006;Nayak and Langdon, 2007;Bousquet et al, 2009), has also been demonstrated to be safe in children (Bisgaard et al, 2009). Similar results have also been obtained with zafirlukast (Piatti et al, 2003) and pranlukast (Ueda et al, 2003;Okubo and Baba, 2008).…”