Atomoxetine is a non stimulant prescription medicine for ADHD. It works by increasing noradrenaline activity and, unlike stimulants, builds effect gradually over several weeks of daily use rather than working dose by dose.
Because it is not a controlled drug, atomoxetine can suit people for whom stimulants are unsuitable due to side effects, other health conditions or personal preference. A doctor discusses the slower onset and monitoring schedule when weighing it against other options.