Rhinitis, Allergic, Seasonal
Conditions
Keywords
Levocetirizine dihydrochloride, Xyzal tablets
Brief summary
Efficacy and Safety of Levocetirizine 8 Weeks Prior and After the Onset of the Grass Pollen Season in Subjects With SAR
Interventions
Sponsors
Study design
Eligibility
Inclusion criteria
* male or female subjects ≥ 12 years * 2 year history of seasonal allergic rhinitis * documented hypersensitivity to local seasonal allergens (grass pollen) * documented pollen-induced asthma * without acute ongoing exacerbation of asthma or allergic rhinitis * no continuous ongoing treatment for rhinitis or asthma
Exclusion criteria
* non-allergic rhinitis and anatomic abnormalities disturbing the analysis of nasal capacity * symptomatic rhinitis or asthma due to tree pollens * currently treated by specific grass pollen immunotherapy * suffering from non-allergic asthma * chronic use of inhaled steroids and/or long acting β2 agonists; and/or corticosteroid dependent asthma * atopic dermatitis or urticaria requiring an antihistamine treatment or the administration of oral or topical corticosteroids * contraindication for salbutamol use
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| T4SS (sum of the scores of the severity of sneezing, rhinorrhea, nasal pruritus and ocular pruritus) | 12 weeks |
Secondary
| Measure | Time frame |
|---|---|
| Pollen-induced symptomatology of asthma; symptoms of rhinitis and asthma over the first 4 season weeks and during the entire observation period following the actual onset of the grass pollen season | 12 weeks |