Is Levocetirizine Less Sedating Than Cetirizine?

Summary

The purpose of this study is to determine whether cetirizine (zyrtec), levocetirizine (xyzal), and placebo differ in the degree of sedation they produce and their relief of allergy symptoms.

Timeline

Start

2009-01

Primary completion

2009-05

Completion

2009-05

Publications

• Background Devalia JL, De Vos C, Hanotte F, Baltes E. A randomized, double-blind, crossover comparison among cetirizine, levocetirizine, and ucb 28557 on histamine-induced cutaneous responses in healthy adult volunteers. Allergy. 2001 Jan;56(1):50-7. doi: 10.1034/j.1398-9995.2001.00726.x.
• Background de Blic J, Wahn U, Billard E, Alt R, Pujazon MC. Levocetirizine in children: evidenced efficacy and safety in a 6-week randomized seasonal allergic rhinitis trial. Pediatr Allergy Immunol. 2005 May;16(3):267-75. doi: 10.1111/j.1399-3038.2005.00216.x.
• Background Bachert C, Bousquet J, Canonica GW, Durham SR, Klimek L, Mullol J, Van Cauwenberge PB, Van Hammee G; XPERT Study Group. Levocetirizine improves quality of life and reduces costs in long-term management of persistent allergic rhinitis. J Allergy Clin Immunol. 2004 Oct;114(4):838-44. doi: 10.1016/j.jaci.2004.05.070.

Drugs

Indications