Therapy with the NEMOS® device

Information about the NEMOS® device

What is NEMOS® and how does NEMOS® work?

The transcutaneous vagus nerve stimulator NEMOS® consists of a stimulation unit and a dedicated ear electrode. The stimulation unit, approximately the size of a common mobile phone, sends out the electrical impulses. It is connected with the ear electrode, which patients wear like an earphone.

The impulses are transferred via the ear electrode through the skin to a branch of the vagus nerve.

How is NEMOS® used?

The treatment with NEMOS® is carried out autonomously by the patients. The recommended daily stimulation dose is 4 hours and should be reached daily.

Users regulate and adapt the intensity of the stimulation according to their individual sensitivity, which can vary from day to day or even over the period of the therapy. To ensure optimal stimulation, they should choose the intensity so they feel a prickling or tingling sensation. The stimulation should be noticeable but not painful or uncomfortable.

Using NEMOS® does not involve surgery, or hospitalization. Basically, patients can carry on with their usual everyday activities during the stimulation session, so NEMOS® is easy to integrate into the daily routine.

How effective is NEMOS®?

Most treatment options for epilepsies, like pharmaceuticals, deep brain stimulation and invasive vagus nerve stimulation, are not acute treatments. This also applies for NEMOS®.

Even if you respond to therapy with NEMOS®, it may take weeks or months to experience noticeable benefit.

Patients who do not respond sufficiently to the therapy with NEMOS® can return the device after 6 months.


The NEMOS®® device should not be used in the following cases:

  • Pregnant women should not use the device.
  • Persons with active implants (e.g. cochlear implants, vagus nerve stimulators, or pacemakers should not use the device.
  • Persons with cerebral shunts, (e.g. used to treat hydrocephalus) should not use the device.
  • The electrodes should not be applied to sore or diseased skin.

What side effects are there?

When using t-VNS®® treatment, local side effects caused by the stimulation, such as itching, paraesthesia in the area of the outer auricle, pain, redness, pressure marks and skin lesion may occur at the point of stimulation.

The stimulation of the vagus nerve may affect the autonomic nervous system. This may manifest in the form of symptoms such as headaches, nausea or vertigo.

As with any other treatment based on drugs or neurostimulation, t-VNS®® treatment may lead to an increase in seizures. This involves increases in one or more of the following: seizure frequency (series of seizures up to and including, albeit rarely, status epilepticus), severity and duration. A change in the character of seizures is also possible – they may, for example, begin to occur during the day rather than at night.

These side effects will generally subside soon after Stimulation is stopped.

Should you experience any long-lasting or severe side effects,please stop the treatment and consult your doctor immediately.


Nemos Patient at Home