Efficacy and safety of levocetirizine on symptoms and health-related quality of life of children with perennial allergic rhinitis: a double-blind, placebo-controlled randomized clinical trial

The study confirmed the efficacy of levocetirizine in relieving symptoms of perennial allergic rhinitis in children between 6 and 12 years of age. A HRQL benefit greater than placebo was shown. The treatment was well tolerated.