The relatively short durations of the initial pivotal randomized placebo-controlled trials involving atomoxetine HCl for the treatment of attention-deficit/hyperactivity disorder (ADHD) provided limited insight into the time courses of ADHD core symptom responses to this nonstimulant, selective norepinephrine reuptake inhibitor. | Time courses of improvement and symptom remission in children treated with atomoxetine for attention-deficit/hyperactivity disorder: Analysis of Canadian open-label studies