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How gammaCore (nVNS) Works

How gammaCore (nVNS) Works

gammaCore activates the vagus nerve with patented, gentle electrical stimulation.

Non-invasive vagus nerve stimulation with gammaCore helps block the pain signals that cause migraines and cluster attacks.

Unlike traditional vagus nerve stimulation therapies, gammaCore stimulates the nerve non-invasively through the skin without the need for surgery.

For Physicians

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Prescribing Information Expand

gammaCore offers an easy, convenient prescribing process

If you and your patients decide that gammaCore is right for them, simply:

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Step 1:


Print out the Physician Authorisation and Patient Consent/Order Forms:

– Physician completes the Authorisation Form
– Patient signs the Consent/Order Form

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Step 2:


Email the completed forms to the email address noted on the top right-hand corner of the forms

Authorisation & Order Forms


Download Forms


Download Forms

gammaCoreTM (non-invasive vagus nerve stimulator) is intended to provide non-invasive vagus nerve stimulation (nVNS) on the side of the neck. gammaCore is a non-drug treatment for adults who suffer from primary headache conditions (cluster headache, migraine, and hemicrania continua).

  • The long-term effects of the chronic use of gammaCore have not been evaluated
  • gammaCore contraindications include but are not limited to:
    • Have an active implantable medical device, such as a pacemaker, hearing aid implant, or any implanted electronic device
    • Have a metallic device, such as a stent, bone plate, or bone screw, implanted at or near the neck
    • Are using another device at the same time (e.g., TENS Unit, muscle stimulator) or any portable electronic device (e.g., mobile phone)
  • Safety and efficacy of gammaCore have not been evaluated in the following patients:
    • Patients diagnosed with narrowing of the arteries (carotid atherosclerosis)
    • Patients who have had surgery to cut the vagus nerve in the neck (cervical vagotomy)
    • Pediatric patients (younger than 12 years)
    • Pregnant women
    • Patients with clinically significant hypertension, hypotension, bradycardia, or tachycardia