- Subjects 2 mo. to < 19 yrs of age, with signs and symptoms of AOM, with moderate to severe pain (current episode 2 wks duration). Moderate to severe pain is defined as a score of 5 (on a scale of 0 - 10) on the FAECC pain scale as evaluated by a trained clinical staff or 6 (on a scale of 0 - 10) on the FPS-R as evaluated by the subject. Moderate to severe pain criteria must be met at eligibility and the pre-dose pain assessment.