Norepinephrine reuptake inhibitors (NRIs) are used to treat attention-deficit hyperactivity disorder (ADHD). NRIs work by increasing the levels of norepinephrine in your brain, which helps improve focus, mood, and energy levels. These medications are typically available in oral form. Examples include atomoxetine (Strattera) and viloxazine (Qelbree). You can take these medications as prescribed to help manage your symptoms effectively.