“…Earlier open-label, practice based clinical trials extended real-world clinical experience with desloratadine for the treatment of AR to such diverse populations as those in Hungary, Israel, Malaysia, the Philippines, Portugal, and Saudi Arabia [29,32,33,35-37]. Subjects with AR treated with desloratadine 5 mg once daily in these trials showed significant improvement in ocular and nasal symptoms, especially congestion, after 2 to 4 weeks of treatment.…”