The Research

This randomized, double-blind, placebo-controlled study investigated the efficacy and safety of combining ipratropium bromide nasal spray 0.03% (an anticholinergic agent) with beclomethasone dipropionate nasal spray (a corticosteroid) in patients with perennial rhinitis. A total of 533 patients received either the combination therapy, ipratropium alone, beclomethasone alone, or placebo for a period of four weeks. The study measured both physician- and patient-assessed outcomes including severity and duration of rhinorrhea, congestion, and sneezing.