SLC6A2 and attention deficit-hyperactivity disorder: ADHD is associated with reduced noradrenaline (norepinephrine) transporter availability in right attention networks [38]: noradrenaline (norepinephrine) reuptake inhibitors inhibit the uptake of primarily norepinephrine by presynaptic nerve terminals and increase its availability in the synaptic cleft by blocking the human norepinephrine transporter [17].