Conditions: Attention Deficit Hyperactivity Disorder
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 151
Healthy volunteers: no

Brief summary:
Double blinded clinical trial placebo controlled in 153 children (planned enrollment) with recent diagnosis of ADHD. Patients will be randomized to atomoxetine or placebo arm (2:1). The double blinded period will last 12 weeks and the treatment open phase will last up to 1 year, and atomoxetine treatment will be administered.

A gatekeeper strategy will be employed for sequentially testing the secondary objectives.

Detailed description:

Arms:
arm 1: atomoxetine: 0.5 mg/kg/day every day (QD),by mouth (PO) for 2 weeks, 1.2 - 1.4 mg/kg/day QD, PO for 10 weeks, then 1.2 - 1.4 mg/kg/day QD, PO for up to 1 year arm 2: placebo every day (QD), by mouth (PO) for 12 weeks,then possibility to switch to atomoxetine at 0.5 mg/kg/day QD, PO for 1 week, then to 1.2 - 1.4 mg/kg/day QD, PO for up to 1 year (open-label extension)

Interventions: intervention 1: Atomoxetine Hydrochloride intervention 2: placebo
Intervention descriptions: intervention 1: None intervention 2: None

Protocol document: