Supported by over 60 globally recognized institutions

WHY NUROSYM?

Gold standard in scientific research

recommended by health and research professionals

#1 Most Studied and clinically validated

proven effective in 50+ clinical studies with world-class institutions, supported by Harvard, UCLA, Yale, and more than 60 research institutions.

#1 Safest

a CE-certified device, with zero serious adverse events reported in clinical studies.

#1 most effective

Delivers 3–4 times greater vagal activation than deep breathing or meditation, with a 61% increase in vagus nerve activity in just 5 minutes.

High precision

Precisely stimulates relevant vagal nerve fibers

The #1 easiest to use

Wearable, non-invasive, hands-free, works while performing most activities and gel-free

#1 Doctor Recommended

1000+ health professionals worldwide recommend it

#1 Most Widely Used

Over 4 million treatment sessions completed.

Nervous System Dysregulation: The Invisible Pandemic That’s Sabotaging Your Life

Millions worldwide struggle daily with chronic fatigue, anxiety, and digestive problems. They seek medical help, try treatments — yet true recovery remains elusive. More and more experts are identifying a common underlying cause: a dysregulated nervous system, often overlooked, but with far-reaching consequences for physical and mental health. Today, science places a new solution in your hands — helping you restore balance to both body and mind. Nurosym™ — non-invasive auricular vagal neuromodulation therapy (AVNT™).

What is the vagus nerve and its role?

The vagus nerve, also known as cranial nerve X or the vagal nerve, is the longest nerve of the parasympathetic nervous system and its primary regulator. It forms the communication link between the brain and all major organs, controlling essential processes such as breathing, heart rate, digestion, and the stress response.

When the vagus nerve functions optimally, your body maintains a healthy balance between states of alertness and relaxation. When it becomes impaired or underactive, issues such as chronic stress, anxiety, depression, digestive disorders, insomnia, low immunity, and chronic fatigue may occur.

Benefits you feel from the first uses with Nurosym™

Nurosym safely stimulates the auricular branch of the vagus nerve. It is supported by over 50 placebo-controlled clinical studies conducted with leading medical institutions and is recommended by physicians and researchers worldwide.

The device delivers a precisely engineered electrical signal designed to optimally activate the parasympathetic vagal nervous system, with clinically proven efficacy and safety, triggering three essential effects:

Nurosym produces a rapid 67% increase in vagus nerve activity in just 5 minutes, without requiring training, mental effort, or lifestyle changes.

A portable device designed for home use, Nurosym can be easily used while working, traveling, cooking, socializing, or going about your daily activities.

4M+ happy user sessions

How Nurosym™ Works

Non-invasive vagal neuromodulation for autonomic nervous system regulation

Nurosym™ is a neuromodulation device that delivers controlled electrical impulses, with standardized parameters supported by scientific literature, to stimulate the auricular branch of the vagus nerve (auricular vagus nerve stimulation – aVNS). Stimulation is performed non-invasively at the level of the outer ear, with the aim of influencing autonomic nervous system function and supporting the balance between the sympathetic response (“fight or flight”) and activation of the parasympathetic component, associated with “rest and digest”.

The vagus nerve represents a major communication pathway between the brain and internal organs, with extensive connections to the heart, lungs, digestive tract, and brain structures involved in stress and emotional regulation.

In this context, clinical research over the past decades has investigated the role of vagal stimulation in supporting the body’s physiological self-regulation mechanisms.

By modulating vagal activity, Nurosym™ may contribute to:

supporting the body’s stress response regulation,
regulating breathing and heart rate variability,
supporting blood pressure balance,
supporting digestive function,
improving vagal tone and recovery capacity,
promoting an overall state of calm and neurovegetative stability.

These effects are associated with optimized autonomic nervous system function and support of overall physiological performance.

In the past, vagus nerve stimulation was primarily available in the form of a surgical implant (implantable VNS), an invasive procedure used for specific indications, with costs that may exceed USD 30,000.

Nurosym™ is a CE-certified medical device, in compliance with European safety standards.

Scientifically Proven Results in Over 50 Clinical Studies

Nurosym brings the future of medicine directly into your hands. Using revolutionary medical bioelectronic technology, this vagus nerve stimulation device delivers gentle, precise electrical impulses to your nervous system, reactivating the body’s natural healing mechanisms.

Nurosym™ is more than just a device. It is an investment in your long-term health, supported by one of the strongest scientific evidence bases in the field of vagus nerve stimulation. Over 50 clinical studies conducted in collaboration with leading universities and medical centers such as Harvard, Yale, UCLA, and Stanford have confirmed the effectiveness of non-invasive vagal neuromodulation in improving both physical and mental health.

Nurosym is revolutionary as the first and most extensively studied proprietary auricular vagal therapy (AVNT™) delivered via the tragus, non-invasive, CE-certified and FDA-approved as a low-risk medical device.

+67%

+90%

+31%

+18%

+32%

+39%

+50%

+29%

-45%

-35%

-48%

-78%

-85%

-61%

-28%

-40%

-11%

-27%

-10%

-36%

What symptoms is Nurosym™ used for?

Nurosym™ is used to help address the following symptoms:

Anxiety

Low vagal tone is associated with increased levels of anxiety and chronic stress. By stimulating the vagus nerve, Nurosym activates the parasympathetic nervous system, reducing the “fight or flight” response and promoting a state of calm and mental clarity.

Insomnia and sleep disorders

Activating the vagus nerve supports deep relaxation and helps regulate the sleep–wake cycle. Daily use of the device improves sleep quality and morning energy levels, without the side effects associated with medication.

Stress

By calming the vagus nerve and reducing stress hormone levels, Nurosym supports emotional balance and lowers mental tension. The result is a state of relaxation and mental clarity, even in demanding or high-pressure situations.

Depression

Clinical studies show that vagus nerve treatment through neuromodulation supports emotional regulation and helps reduce depressive symptoms by stimulating the production of neurotransmitters responsible for positive mood and emotional well-being.

Chronic fatigue

Improves energy levels and physical resilience. It reduces oxidative stress and supports the body’s recovery processes, helping you feel more alert, energized, and productive throughout the day.

Digestive issues

A healthy vagus nerve ensures proper motility of the digestive tract. Calming the vagus nerve through neuromodulation helps alleviate bloating, irritable bowel syndrome, and slow digestion, contributing to daily digestive comfort.

Cardiovascular issues

By regulating heart rate and improving heart rate variability (HRV), Nurosym supports heart health and increases resilience to both physical and emotional stress.

Chronic pain

By influencing the inflammatory response, vagus nerve stimulation helps reduce pain perception and improve mobility. It is beneficial for muscular, joint, and neuropathic pain.

Attention deficit and memory improvement

After 1–2 sessions per day of 20–30 minutes each, improvements can be observed in attention and processing speed through the reduction of hyperexcitability and stress. It enhances synaptic plasticity, improves cerebral blood flow, and strengthens connectivity between the hippocampus and the prefrontal cortex—resulting in faster learning and better memory retention. It also increases levels of BDNF, supporting neurogenesis and memory consolidation.

How to use Nurosym™

Correct positioning

Wear the ear clip on the left ear, positioning it on the tragus (not on the earlobe and not inside the ear canal).

Secure fit

Make sure the cable runs behind the ear to ensure proper and stable positioning.

Device activation

Turn on the device and gradually increase the intensity until you feel a pleasant tingling sensation.

Moisten the area

Lightly moisten the tragus to ensure optimal conductivity.

Duration and timing of use

Sit comfortably and use the device for 30–60 minutes daily (in the morning and/or evening).

Flexible use

Nurosym can be used during everyday activities, such as reading or working.

Experienced effects

You may experience relaxation, calm, increased energy, and mental clarity.

Time to results

Results may vary: some users feel benefits immediately, while others notice improvements over the course of several weeks.

Guide to Starting the Nurosym™ Protocol

NUROSYM™ INITIATION

DAY 1 🌙 15–30 MIN

DAY 2 🌙 15–30 MIN

DAY 3 🌙 15–30 MIN or 🌞 15–30 MIN

DAY 4 🌙 30–60 MIN

DAY 5 🌙 30–60 MIN sau 🌞 30–60 MIN

After Day 5, you may continue with:

= Evening session – 1–3 hours before sleep

= Morning session – not immediately before or during physical training

30-Day Money-Back Guarantee

- results-based pricing

Delivery in the EU & UK

Shipping to the EU & UK from the Netherlands (1–3 business days)

Free Shipping

Customs Fees

Customs duties may apply outside the EU

Full Refund

Full refund of the purchase amount within 30 days

Contraindications and recommendations for using Nurosym™

Nurosym is a complementary therapy and should not replace medical advice. Please consult a healthcare professional if necessary. Some users may experience temporary side effects such as dizziness or mild skin irritation at the electrode application site.

Absolute contraindications (Do not use the device if you fall into any of the following categories):

You have undergone cervical vagotomy (surgical cutting of the vagus nerve)
You have severe bradycardia (very low heart rate)
You have permanent metallic or electronic implants near the tragus
(e.g., fixed piercings, hearing aids, etc.)
You are pregnant

Relative contraindications (Use only under medical supervision):

You have any other active implant
(e.g., pacemaker, implantable neurostimulators, cochlear implant, etc.)
You have severe coronary artery disease or have had a heart attack within the last 5 years
You are a child, and use should be supervised by a specialist
Although studies have not shown complications in pediatric patients or those with pacemakers, individual medical evaluation is still required

Other situations requiring special caution:

Do not use on irritated or inflamed skin, open wounds, varicose veins, etc.
Avoid areas with tumors or cancerous lesions, or placement on the neck and chest — this may cause spasms or involuntary reactions
Do not use simultaneously with high-frequency surgical equipment or microwave therapy, as this may cause burns or device malfunction
Avoid use if the skin on the tragus is cracked or if the device is damaged

Safety during normal use:

Do not use while driving, sleeping, showering, or operating heavy machinery
Ensure electrodes are not placed too close to the heart, neck, eyes, or chest, and avoid directing current toward the chest

Dedicated Nurosym / Parasym Ltd Support

Contact Parasym Ltd

FREQUENTLY ASKED QUESTIONS

Are there any side effects associated with Nurosym?

As with any device, side effects are possible, however, we’re happy to report that Nurosym is considered low risk when used as intended and boasts a very high safety profile. In fact, across all 50+ scientific studies conducted, there have been no reports of serious adverse events associated with Nurosym in studies to date.

While side effects are rare, it’s important to be aware of potential experiences. The most commonly reported side effects include:

Tingling on the skin where the electrode is applied (paresthesia/dysesthesia)
Discomfort on the skin of the ear (application site discomfort)
Application site irritation/redness – if this occurs, try applying a bit of moisture before use, shorten session times, or switch ears
In the initial weeks of use, a small proportion of users may also experience temporary effects that typically subside within 1-2 weeks of continuous use due to adaptation. These effects may include nausea, headaches, confusion, malaise, or weakness.

It’s worth noting that in a published review of non-invasive neuromodulation clinical studies, only 2.6% of users discontinued therapy due to side effects.

Can I use the Nurosym if I have an earring or a piercing?

It’s completely okay to wear earrings when using the device as long as it is not on your tragus. If you have piercings on the tragus area, we recommend allowing it to heal completely up to a week prior to using the device.

Can I share my Nurosym with others?

All Parasym clinical research has been conducted with each participant using their own personal device. To ensure the safest and most effective experience, we recommend that every individual user has their own device. Patient registration is done for each personal device to guarantee safe use.

Can I travel with my Nurosym?

Absolutely – in fact, Nurosym can help relieve inflammation related to high altitude and jet lag, making it the perfect travel companion. Just keep in mind that Nurosym is powered by lithium-ion batteries, so most air travel safety regulations require that it be carried in your carry-on baggage only. For added safety, we recommend checking your airport’s guidelines or asking an airport employee before your flight.

Can I use Nurosym if I have a pacemaker or other medical implant?

Nurosym should not be used if you have any active implanted device, including electronic or medical devices such as a pacemaker, cochlear implant, cerebral shunts, or invasive vagus nerve stimulators. Additionally, if you have non-active implants that may potentially interact with the nervous system, such as metal implants, it’s important to consult with your healthcare professional before using Nurosym. Users with known severe coronary disease or recent myocardial infarction (within 5 years), as well as pediatric patients, should also seek medical advice before using Nurosym.

Are there any ongoing research or studies about Nurosym?

Nurosym is at the forefront of scientific research, continuously investing substantial resources to advance neuromodulation technology. With over $10 million dedicated to studies, we collaborate with over 60 esteemed organizations, including Harvard and UCL, to deepen understanding and improve outcomes.

Our research has resulted in 50+ peer-reviewed papers in leading journals such as Nature and Nature Reviews Cardiology. This includes a meta-analysis of placebo-controlled cardiac studies in JACC, a highly reputable journal with a 21.7 impact factor, ranking among the world’s top 100 journals. These studies highlight exciting breakthroughs in modulating Vagus Nerve Activity, Heart Rate Variability, and more.

Can I use Nurosym while sleeping or exercising?

We don’t recommend using Nurosym while sleeping or exercising. It’s important to use Nurosym in a controlled environment where you can remain aware of its effects. Always prioritize your safety and well-being when using Nurosym.

Are there any specific conditions that must be met for a return to be accepted?

In order for a return to be accepted, your item should be in its original condition and packaging, just as you received it.

Can Nurosym be used alongside other therapies or medications?

Nurosym can be a complementary tool alongside other therapies or medications for many individuals. However, there are specific contraindications to consider. These include:

Users who have undergone surgery to cut the vagus nerve (cervical vagotomy)
Users diagnosed with severe bradycardia
Users with a permanent implanted metallic or electronic device or jewelry in close proximity to the ear tragus
Pregnant women

Additionally, certain situations may be contraindications unless under the supervision of a healthcare professional, such as users with any active implanted device, severe coronary disease or recent myocardial infarction within 5 years, and pediatric users.

Do you offer a warranty?

Yes, we offer a warranty on Nurosym for 2 years and on the earpiece electrode for 6 months. Our Nurosym devices are designed to be durable and undergo strict quality tests before being dispatched.

Can children use Nurosym?

No, Nurosym is not intended for use by individuals under the age of 18.

How often should I charge the device?

The frequency of charging your device depends on your usage patterns. Typically, the battery on the device can last over a week on a single charge. We recommend charging it whenever you notice the battery running low or when the white LED lights on the device indicate it needs charging. It generally takes up to an hour to fully charge the device. You’ll know it’s charging properly when the white LED lights on the device light up, and once all the white lights are steady and not blinking, it indicates that your device is fully charged and ready to use again.

Can I use Nurosym while sleeping or exercising?

We do not recommend using Nurosym during sleep or while exercising, for safety reasons. Use it in a controlled environment where you can remain attentive to its effects.

Nurosym can be easily integrated into everyday activities such as:

working
cooking
meditation
watching TV
socializing

A daily usage of 60 minutes is recommended, with effects that may be felt in as little as 5 minutes.

Using Nurosym before bedtime may help improve sleep quality.

Can I use Nurosym during pregnancy or while breastfeeding?

There are no specific studies available on the use of Nurosym during pregnancy or breastfeeding. Please consult your healthcare provider to determine whether vagus nerve stimulation is appropriate for you during this period.

Do I need to use conductive gel?

No. A small drop of water on the tragus is sufficient. Conductive gel is optional.

How do I know if Nurosym is working for me?

You should feel a mild, painless tingling sensation during use. Some results may appear within 5 days, but for long-lasting effects, daily use for 4–12 weeks is recommended.

Which activities should be avoided during use?

The following activities should be avoided while using Nurosym:

bathing or showering
sleeping
driving
operating heavy machinery

The device must be kept dry at all times.

What sensation does Nurosym produce?

A gentle, pleasant tingling sensation on the ear — many users describe it as relaxing.

How do I find the correct intensity level?

Gradually increase the intensity until you feel a light tingling sensation. If the sensation fades during the session, slightly increase the intensity. If irritation occurs, reduce the session duration.

My earpiece is damaged. How can I replace it?

If it is still under warranty, please contact us for assistance. If not, a replacement earpiece can be purchased from the Accessories section on our website.

Where is Nurosym shipped from?

Nurosym is shipped from our warehouses in the Netherlands.

What should I do if my package is lost or damaged during shipping?

Please contact our support team — we will resolve the situation promptly.

Can I change my address after placing the order?

Yes, if you contact us within the first 24 hours. Please send an email to care@nurosym.com with the subject line: “I want to change my shipping address.”

Is a signature required upon delivery?

Yes, for security reasons.

How do I return the product?

Complete the return form on our website or email care@nurosym.com
You will receive the return address and send the package via courier
Once tracking is confirmed, you will receive your refund (excluding shipping costs)

How long does it take to process returns?

Returns are processed within 3–5 business days after approval. Your bank may take up to 14 days to complete the refund.

How long should I use Nurosym?

30–60 minutes per day, split between morning and evening sessions. Do not exceed the recommended duration — overstimulation of the vagus nerve may cause nausea, dizziness, or abdominal discomfort.

How long does the battery last?

Up to 1 week, depending on usage. Full charging time: approximately 1 hour.

How do I clean and maintain Nurosym?