Montelukast in Patients With Seasonal Allergic Rhinitis - Spring 2000 Study (MK-0476A-162)(COMPLETED)

A Multicenter, Double-Blind, Randomized, Parallel-Group Study Investigating the Clinical Effects of Montelukast in Patients With Seasonal Allergic Rhinitis--Spring Study

This study will evaluate the ability of montelukast to improve the signs and symptoms of seasonal allergic rhinitis compared with loratadine and placebo.

Inclusion Criteria:

• Patient has a documented history of seasonal allergic rhinitis symptoms that flare up during the study season
• Patient is a nonsmoker and has been a nonsmoker for at least 1 year
• Patient is in good general health

Exclusion Criteria:

• Patient is hospitalized
• Patient is a woman who is less than 8 weeks postpartum or is breast-feeding
• Patient intends to move or vacation away during the study
• Patient has had any major surgery within 4 weeks of study start
• Patient is a current or past abuser of alcohol or illicit drugs
• Patient has been treated in an emergency room for asthma in the past month
• Patient had an upper respiratory infection with in 3 weeks prior to study start