Atomoxetine is primarily used in the treatment of attention deficit hyperactivity disorder (ADHD) in both children and adults. It works by increasing the levels of norepinephrine in the brain, which helps improve attention span, reduce impulsivity, and control hyperactivity. Unlike stimulant medications commonly prescribed for ADHD, atomoxetine is a non-stimulant, making it a suitable option for individuals who may not respond well to stimulants or have a history of substance abuse. It is often prescribed when other treatments are ineffective or contraindicated. The medication is taken orally, usually once or twice daily, and its effects may take several weeks to become fully noticeable. It is important to follow the prescribed dosage and consult a healthcare provider for adjustments or monitoring of potential side effects.