A Study in Pediatric Patients With Generalized Anxiety Disorder

Inclusion Criteria:

- Diagnosed with Generalized Anxiety Disorder (GAD) on clinical exam as defined by the
Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision
(DSM-IV-TR) and supported by the Mini International Neuropsychiatric Interview for
children and adolescents (MINI-Kid)

- Diagnosis of moderate or greater severity of GAD as determined by the following:

- Presence of 4 or more symptoms identified on the generalized anxiety subsection
of the Pediatric Anxiety Rating Scale (PARS) symptom checklist at screening and
randomization. Two of which are excessive worry and dread or fearful
anticipation (nonspecific)

- PARS severity score of 15 or more at screening and randomization for symptoms
identified on the generalized anxiety subsection of PARS symptom checklist at
screening and randomization

- Clinical Global Impressions of Severity (CGI-S) rating of 4 or more at screening
and randomization

- Presence of significant social, academic, and/or familial dysfunction as
determined by the Children's Global Assessment Scale (CGAS) score of 60 or less
at screening and randomization

- Female patients must test negative for pregnancy during screening Furthermore,
female patients must agree to abstain from sexual activity or to use a reliable
method of birth control as determined by the investigator during the study

- Patient's parent/legal representative and patient, if capable, are judged to be
reliable by the investigator to keep all appointments for clinical visits, tests, and
procedures required by the protocol

- Patient's parent/legal representative and patient, if capable, must have a degree of
understanding such that they can communicate intelligently with the investigator and
study coordinator

- Patients must be capable of swallowing study drug whole (without opening the capsule,
crushing, dissolving, dividing, etc.)

- Patients must have venous access sufficient to allow blood sampling and are compliant
with blood draws as per the protocol

Exclusion Criteria:

- Current diagnosis of major depressive disorder (MDD)

- Patients for whom the primary focus of treatment is separation anxiety or social
phobia (patients with secondary separation anxiety or social phobia are allowed to
participate)

- Have current primary diagnosis of any DSM-IV Axis I disorder except GAD, or a current
secondary DSM-IV-TR Axis 1 disorder that requires any pharmacologic treatment (other
than those disorders listed below). Primary is defined as the disorder that is the
primary focus of treatment

- Have a history of DSM-IV-TR-defined substance abuse or dependence within the past
year, excluding caffeine and nicotine

- Have a current or previous diagnosis of bipolar disorder, psychotic depression,
schizophrenia or other psychotic disorder, anorexia, bulimia, obsessive compulsive
disorder, post-traumatic stress disorder, panic disorder, or pervasive development
disorder, as judged by the investigator

- Have 1 or more first-degree relatives (parents or siblings) with diagnosed bipolar I
disorder

- Have a serious or unstable medical illness, psychological condition, clinically
significant laboratory or electrocardiogram (ECG)result, hypersensitivity to
duloxetine, or its active ingredients, frequent or severe allergic reactions to
multiple medications, uncontrolled narrow-angle glaucoma, acute liver injury (for
example, hepatitis) or severe cirrhosis (Child-Pugh Class C), or a history of any
seizure disorder (other than febrile seizures)

- Have a significant suicide attempt within 1 year of screening or are currently at
risk of suicide in the opinion of the investigator

- Have initiated, stopped, or changed the type or intensity of psychotherapy within 6
weeks prior to screening. Patients who require a change to psychotherapy between
weeks 1 through 10 will be excluded

- Have a weight less than 20 kilograms at any time during the screening period

- Female patients who are pregnant, nursing or have recently given birth