Conditions: Rhinitis, Allergic, Perennial
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 1992
Healthy volunteers: no

Brief summary:
The purpose of this study is to determine the effect of an approved medication on the symptoms of perennial allergic rhinitis (an inflammation of the mucous membrane of the nose similar to that found in hay fever except that symptoms persist throughout the year), in patients who have a history of perennial allergic rhinitis.

Detailed description:

Arms:
arm 1: Montelukast arm 2: Placebo

Interventions: intervention 1: Montelukast intervention 2: Comparator: Placebo
Intervention descriptions: intervention 1: one 10 mg tablet, taken once daily at bed time for 6 weeks intervention 2: one placebo tablet, taken once daily at bed time for 6 weeks

Protocol document: