Efficacy and Safety of Concomitant Montelukast Sodium and Levocetirizine Dihydrochloride in Perennial Allergic Rhinitis (PAR) Patients

Study Summary

The purpose of this study is to demonstrate that the efficacy of Concomitant Montelukast Sodium and Levocetirizine Dihydrochloride is superior to that of Levocetirizine and Montelukast monotherapies and to compare the safety and tolerability of Concomitant Montelukast Sodium and Levocetirizine Dihydrochloride to those of Levocetirizine and Montelukast monotherapies in Perennial Allergic Rhinitis (PAR) patients.