25
Participants
Start Date
November 30, 2005
Primary Completion Date
December 31, 2006
Study Completion Date
December 31, 2006
levocetirizine
5 mg once nightly before visit
placebo to levocetirizine
1 tablet once nightly before visit
Ninewells Hospital and Medical School (Tayside NHS Trust, University of Dundee), Dundee
Perth Royal Infirmary, Perth
Brian J Lipworth
OTHER