A Study to Evaluate the Use of Extended Release Alprazolam in the Treatment of Adolescents With Panic Disorder

Inclusion Criteria: * A primary DSM-IV-TR diagnosis of panic disorder with or without agoraphobia based on the Mini International Neuropsychiatric Interview for Children and Adolescents * At least an average of one 4-symptom panic attack per week over the last 4 weeks prior to screening * At least an average of one 4-symptom panic attack per week over the last 4 weeks prior to baseline * At least one 4-symptom panic attack in the 7 days prior to baseline Exclusion Criteria: * Current (in the past 6 months) DSM-IV-TR diagnosis of obsessive compulsive disorder, major depressive disorder, dysthymic disorder, or alcohol and/or substance dependence * Primary DSM-IV-TR diagnosis of social anxiety disorder, post-traumatic stress disorder, simple phobia, separation anxiety disorder, generalized anxiety disorder, conduct disorder, oppositional defiant disorder, or attention deficit hyperactivity disorder * Any current or past history of schizophrenia or psychosis; bipolar disorder or cyclothymia; dementia, delirium or other organic brain disease; an Axis I eating disorder; mental retardation, Asperger's disorder, or any other serious developmental disorder * A CDRS-R score \>35