Effectiveness of desloratadine 5 mg once daily in patients with symptoms of seasonal allergic rhinitis: Results of a Canadian multicenter, open-label trial

BACKGROUND: Seasonal allergic rhinitis (SAR) is an inflammatory response to seasonal allergens. Desloratadine, a once-daily selective histamine H(1)-receptor antagonist, has been reported to be efficacious in relieving symptoms of SAR in controlled clinical trials. However, to assess the actual effectiveness of a drug, it is important to examine information about its use in routine clinical practice. OBJECTIVE: The Partners in Allergy Control …