The purpose of this study is to determine if the investigational drug is effective and safe in children with seasonal allergic rhinitis.

Inclusion criteria:

• Diagnosis of seasonal allergic rhinitis.
• Adequate exposure to seasonal (Spring/Summer) allergen prevalent to the geographic area.

Exclusion criteria:

• Have significant concomitant medical conditions.
• Use of corticosteroids, other allergy meds during the study.
• Have abnormal ECG or laboratory abnormality.

Patient-level data for this study will be made available through www.clinicalstudydatarequest.com following the timelines and process described on this site.