The Monarch external Trigeminal Nerve Stimulation (eTNS) System, is indicated for patients ages 7 to 12 years old who are not currently taking prescription ADHD medication and is the first non-drug treatment for ADHD granted marketing authorization by the FDA. The treatment is only available by prescription and must be monitored by a caregiver.

The device generates a low-level electrical pulse and connects via a wire to a small trans dermal patch that adheres to a patient's forehead, just above the eyebrows. They say a patient should feel a tingling sensation on the skin.

Clinical trials have suggested that treatment may take up to 4 weeks to become evident.