['seasonal allergic rhinitis']
['desloratadine 5 mg', 'placebo']

        Inclusion Criteria:

          -  Has at least a 2-year history of seasonal allergic rhinitis with typical symptoms

          -  Male or female who is unlikely to conceive: a surgically sterilized female, female who
             has reached natural menopause, or is of reproductive potential and agrees to either
             remain abstinent or use (or have her partner use) 2 acceptable methods of birth
             control from study start through 14 days after the last dose of study drug.

        Exclusion Criteria:

          -  Has a lower respiratory tract infection or has a nasopharyngolaryngeal infection
             (acute upper respiratory tract infection, acute pharyngolaryngitis, or acute
             tonsillitis, etc.) requiring treatment

          -  Has a coexisting infection or systemic mycosis for which there are no effective
             antibiotics

          -  Has asthma that is under treatment and/or uncontrolled

          -  Has nasal septum ulcers, nasal surgery, or nasal trauma which have not healed

          -  Has vasomotor rhinitis or eosinophilic rhinitis

          -  Has a history of hypersensitivity to antihistamines or ingredients of study drug

          -  Has had treatment with corticosteroids (oral, injectable, suppository, depot drugs
             [injectable]) or immunological drugs within 28 days prior to Visit 2

          -  Is currently receiving treatment with another investigational drug or has received an
             investigational drug within prior 3 months

          -  Has started specific desensitization therapy (allergen immunotherapy) or nonspecific
             allassotherapy (Histaglobin, vaccine therapy, etc.) or who has received such therapies
             within prior 3 months

          -  Has received coagulation or resection using laser therapy etc. for treatment for nasal
             symptoms

          -  Will receive nasal nebulizer therapy and/or thermotherapy during study period

          -  Has severe hepatic, renal, cardiac, hematological disease, or other serious coexisting
             diseases and whose general condition is poor

          -  Has a history of malignancy or clinically important hematological disorder, except for
             adequately treated non-melanomatous skin carcinoma or carcinoma in situ of the cervix

          -  Has a history of severe drug allergy (e.g. anaphylactoid reaction)

          -  Is pregnant or lactating or may be pregnant

          -  Is planning a remote trip for more than 1 day during the Symptom Confirmation Period
             or for more than 2 days during the Treatment Period.
      