Using the patch safely.

Don’t use the patch if you

• are under 18
• are pregnant
• have an implanted electronic medical device, such as a pacemaker, implantable cardioverter-defibrillator, neurostimulator, cochlear implant, or implanted medication pump
• are using another electrical-stimulation device, such as a TENS unit or muscle stimulator
• have non-removable metal in or near your head or neck
• have abnormal neck anatomy, carotid artery narrowing, a carotid stent, or a history of surgery involving the neck, carotid artery, or vagus nerve
• have a skin condition, infection, open wound, swelling, cancer, rash, or significant irritation at the application site
• have significant heart disease, blood-pressure disease, breathing disorder, or an autonomic disorder
• have a history of seizures, aneurysm, brain tumor, severe concussion, brain or skull injury, recent head trauma, cranial-nerve disorder, Bell’s palsy, chronic facial pain, or fainting

Stop and take the patch off right away if you have

• difficulty breathing
• dizziness
• faintness
• significant pain
• skin irritation
• burning, stinging, or unexpected discomfort
• muscle contractions that don’t go away after you lower the intensity
• hoarseness
• pins-and-needles sensations
• any other concerning or unexpected symptom

Don’t use it again if symptoms persist, get worse, or seem concerning. Seek medical attention if symptoms are severe, don’t go away, or need medical care.