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[Multicenter study on the efficacy of Zyrtec (Cetirizine) in the treatment of perennial allergic rhinitis in 875 adolescents].

875 adolescents of both sexes, aged between 12 and 15 years, who had presented with a perennial allergic rhinitis, were included in an open study that was conducted by pediatricians and allergologists on the efficacy of ZYRTEC (CETIRIZINE). There were four evaluations in the study, at Day-10, D 0, D15 and D30 and it was conducted according to the following plan: A first period (D-10 to D 0) to establish the eligibility of the subjects to be tested, and to establish the clinical allergic history, before definitive inclusion at D 0. A second period, of therapy, of 30 days, during which the subjects took a 10 mg tablet of ZYRTEC as a daily dose. Efficacy was evaluated at each visit by scores of intensity of major symptoms (sneezing, nasal discharge, nasal obstruction, nasal pruritus) and secondary symptoms (ocular score ... ) of rhinitis, as well as anterior rhinoscopy. The patients made an auto-evaluation of symptoms at different times. Analysis of the different parameters showed a real efficacy of ZYRTEC, for 30 days of treatment, in young patients. Furthermore, the tolerance of the product is excellent. This study has shown an overall improvement in the symptoms of perennial allergic rhinitis in patients who were treated with ZYRTEC in conditions similar to those of usual medical practice by pediatricians and allergologists.