OBJECTIVE:Seasonal allergic rhinitis (SAR) is a highly prevalent disease. This study was conducted to evaluate the onset and duration of action of three concentrations of olopatadine nasal spray. METHODS: This was a randomized, double-blind, single-dose, placebo-controlled study, conducted in an environmental exposure chamber in patients with SAR. A total of 320 patients were exposed to ragweed allergen in the chamber and randomized to olopatadine nasal spray 0.2%, 0.4%, 0.6%, or placebo nasal spray. Symptoms (sneezing, runny, itchy, and stuffy nose) were self-assessed during a 12-hour study period. RESULTS: All concentrations of olopatadine nasal spray provided clinically meaningful reductions in total nasal symptom scores at 30 minutes compared to the placebo. Olopatadine nasal spray 0.6% was significantly more effective (P < 0.05) than placebo nasal spray at all time-points starting at 90 minutes post-dose and continuing over 12 hours. CONCLUSIONS:Olopatadine nasal spray 0.6% demonstrated a fast onset of action and maintained an effect for at least 12 hours after dosing.
RCT Entities:
OBJECTIVE:Seasonal allergic rhinitis (SAR) is a highly prevalent disease. This study was conducted to evaluate the onset and duration of action of three concentrations of olopatadine nasal spray. METHODS: This was a randomized, double-blind, single-dose, placebo-controlled study, conducted in an environmental exposure chamber in patients with SAR. A total of 320 patients were exposed to ragweed allergen in the chamber and randomized to olopatadine nasal spray 0.2%, 0.4%, 0.6%, or placebo nasal spray. Symptoms (sneezing, runny, itchy, and stuffy nose) were self-assessed during a 12-hour study period. RESULTS: All concentrations of olopatadine nasal spray provided clinically meaningful reductions in total nasal symptom scores at 30 minutes compared to the placebo. Olopatadine nasal spray 0.6% was significantly more effective (P < 0.05) than placebo nasal spray at all time-points starting at 90 minutes post-dose and continuing over 12 hours. CONCLUSIONS:Olopatadine nasal spray 0.6% demonstrated a fast onset of action and maintained an effect for at least 12 hours after dosing.
Authors: Ayşe Arzu Yorgancıoğlu; Bilun Gemicioğlu; Cemal Cingi; Ömer Kalaycı; Ali Fuat Kalyoncu; Claus Bachert; Peter Hellings; Oliver Pfaar; Holger J Schünemann; Dana Wallace; Anna Bedbrook; Wienczyslawa Czarlewski; Jean Bousquet Journal: Turk Thorac J Date: 2020-03-01
Authors: Cemal Cingi; Nuray Bayar Muluk; Dimitrios I Mitsias; Nikolaos G Papadopoulos; Ludger Klimek; Anu Laulajainen-Hongisto; Maija Hytönen; Sanna Katriina Toppila-Salmi; Glenis Kathleen Scadding Journal: Front Allergy Date: 2021-02-22