(Our outcomes according to our protocol: short, general description) ADHD symptoms Measure instrument (e.g. ADHD Rating Scale (ADHD‐RS); Swanson, Kotkin, Atkins, M‐Flynn and Pelham (SKAMP) Scale), parent‐/teacher‐/independent assessor‐rated, time point General behaviour Measure instrument (e.g. Child Behavior Checklist (CBCL)), parent‐/teacher‐/independent assessor‐rated, time point Quality of life Measure instrument, parent‐/teacher‐/independent assessor‐rated, time point Serious adverse events Type of outcome/adverse event, measure method/instrument, parent‐/teacher‐/independent assessor‐rated, time point Non‐serious adverse events Type of outcome/adverse event, measure method/instrument, parent‐/teacher‐/independent assessor‐rated, time point