Effectiveness and Safety of Once or Twice Daily Mometasone Nasal Spray Versus Amoxicillin Versus Placebo for Treatment of Acute Rhinosinusitis (Phase 3 Study)(Study P02692)

Inclusion Criteria: Subjects must: * have been diagnosed with acute rhinosinusitis * have had signs and symptoms of rhinosinusitis for at least 7 but not more than 28 days prior to Baseline * have had a major symptom score \>=5 and \<=12 at the Screening and Baseline, and no more than 3 of the 5 major individual symptoms were to be rated as "severe" * be \>=12 years old * be in good health overall and normal laboratory tests * not be pregnant, intending to become pregnant or intending to impregnate. Exclusion Criteria: Subjects who: * have a history of chronic rhinosinusitis or who had undergone sinus or nasal surgery for chronic rhinosinusitis in the 6 months prior to Screening * have fever \>=101°F and/or persistent severe unilateral facial pain/tooth pain; and/or orbital or peri-orbital facial swelling; and/or dental involvement; and/or worsening symptoms after initial improvement * have a history of symptomatic seasonal allergic rhinitis who were exposed to allergenic pollens * have asthma with FEV1\<65% of predicted volume in the past 3 months or who have had an exacerbation within the past 30 days * have nasal polyps, Kartagener's syndrome, and otitis or atrophic rhinitis * have certain comorbid conditions or contraindications to certain drug therapies