Discover the Nervous System Self-Assessment and learn if your energy regulation system needs support
Do You Feel Dizzy or Lightheaded Just Standing Up?
Ask yourself
- Do you feel faint when standing, leaning on walls or counters for balance?
- Do hot showers leave you weak, like gravity is pulling you down?
- Do you avoid standing in lines because you know you’ll feel faint?
If you answered yes, your autonomic nervous system (ANS) may not be regulating blood pressure and circulation correctly.
Physiological Mechanisms:
- Blunted baroreflex sensitivity: The body’s “blood pressure stabilizer” relies on vagal input to adjust heart rate and blood pressure when you stand.
- Vagal underactivity: When the vagus nerve isn’t firing properly, blood pools in the legs instead of circulating efficiently to the brain.
- Sympathetic surge: The body overcompensates with adrenaline, creating dizziness and faintness.
Research shows taVNS can modulate autonomic outflow and improve markers of autonomic balance, including heart rate variability (HRV) and stress reactivity.
Do You Suffer from a Racing Heart and Palpitations?
Ask yourself
- Does your heart pound when you stand up?
- Do you feel like your heart is racing even when you’re at rest?
- Do you get sudden palpitations that leave you anxious and drained?
Physiological Mechanisms:
- Autonomic imbalance: Sympathetic “accelerator” gets stuck on, vagal “brake” isn’t working.
- Reduced vagal tone: Without vagal counterbalance, HR soars abnormally on standing.
- Overactive adrenaline loop: Your heart races to compensate for poor circulation.
Early studies suggest vagal stimulation can reduce sympathetic activity, shifting the nervous system back toward balance.
Do You Crash from Exhaustion After Simple Activities?
Ask yourself
- Do grocery trips or showers leave you wiped out?
- Do you plan your entire day around pacing energy?
- Do even minor exertions trigger a “post-crash” that takes hours or days to recover from?
Physiological Mechanisms:
- Perfusion failure: Poor blood/oxygen delivery to muscles and brain drives extreme fatigue.
- Sympathetic overdrive: Constant stress signaling drains energy reserves.
- Cellular fatigue: Low vagal tone contributes to oxidative stress and poor mitochondrial recovery.
Pilot studies in post-viral fatigue and Long-COVID cohorts suggest taVNS may improve energy levels and recovery tolerance, with larger clinical trials underway.
Is Brain Fog Stealing Your Clarity?
Ask yourself
- Do you forget what you were saying mid-sentence?
- Do you reread the same page but absorb nothing?
- Do you feel detached in conversations, like your mind is underwater?
Physiological Mechanisms:
- Reduced cerebral blood flow: Poor autonomic regulation limits oxygen to the brain.
- Neuroinflammation: Linked to “slowed processing” in patients experiencing.
- Disrupted neurotransmission: Low vagal tone affects dopamine/acetylcholine, impairing focus and motivation.
Clinical research shows taVNS can influence brain networks involved in attention and working memory, with some studies reporting improvements in clarity and focus.
Do You Sleep but Wake Just as Exhausted?
Ask yourself
- Do you spend 8–10 hours in bed but wake feeling unrefreshed?
- Do you feel wired at night but tired all day?
- Do naps fail to restore your energy?
Physiological Mechanisms:
- Chronic stress mode: The ANS fails to switch into deep parasympathetic recovery at night.
- Poor sleep architecture: Fragmented REM/NREM cycles.
- Overnight sympathetic surges: Heart rate spikes during the night keep the body on high alert.
In a randomized clinical trial, taVNS reduced insomnia severity compared with control, suggesting a role in supporting deeper, more restorative sleep.
Is Postural Heart Rate Abnormalities Affecting Your Digestion and Immunity Too?
Ask yourself
- Do you get bloated after meals or feel nauseous when standing after eating?
- Do you catch colds frequently or recover slowly from minor illnesses?
- Do you have unpredictable bowel habits?
Physiological Mechanisms:
- Gut-brain axis disruption: Low vagal tone impairs digestion and gut motility.
- Immune dysregulation: Poor vagal input weakens the anti-inflammatory reflex.
- Systemic inflammation: Contributes to worsened fatigue and symptom flares.
Vagal pathways help regulate both gut and immune balance; taVNS is being studied for potential benefits in motility and immune signaling.
The Missing Piece Your Doctor Never Learned
Here’s what connects all 6 truths: your vagus nerve controls every one of these processes.
- It regulates blood pressure and circulation.
- It helps calm a racing heart.
- It shapes how your body recovers energy.
- It clears brain fog and supports neuroplasticity.
- It helps synchronize restorative sleep cycles.
- It modulates digestion and immune responses.
These findings support the vagus nerve as a central switchboard for recovery. Non-invasive stimulation is actively being studied as a way to help restore this control system.
Discover Nurosym: The Natural Path to Autonomic Balance
Nurosym offers a scientifically studied, drug-free approach to restore energy and stability by targeting your vagus nerve through auricular stimulation.
Why Nurosym Works:
Evidence indicates taVNS can dampen stress-hormone reactivity, modulate autonomic balance, and improve sleep. Pilot studies in post-viral fatigue and Long-COVID cohorts also report encouraging improvements, with larger clinical trials underway.
Instant ANS reset
Begin rebalancing within minutes of use.
Clinically studied
50+ studies exploring autonomic balance, HRV, sleep, fatigue.
Natural & safe
Non-invasive, no drug interactions.
Nurosym is a CE-marked device in the EU and is used under FDA “non-significant risk” designations in U.S. studies.
Endorsed by Leading Autonomic & Recovery Specialists
Real Results from Real People
“From Postural Heart Rate Abnormalities to fewer rough days—take it off for a day and I feel the difference.”
– Nurosym user
“After post-viral dysautonomia, I finally got a foothold out of exhaustion.”
– Sarit
“Constant crashes turned into steadier days. The improvement was immediate.”
– Postural Heart Rate Abnormalities sufferer testimonial
Meet The Doctors
A practicing doctor of psychiatry, Elisabetta has an MBA from INSEAD Business School, and experience in direct patient care, neuroscience research, communication and management. Dr. Burchi is a physician-scientist, working with Parasym in clinical affairs with a track record of publishing in the most important scientific journals such as The Lancet, writing successful grant proposals for the NIH, and leading the production of editorial, clinical, regulatory and promotional material in collaborative multidisciplinary teams. Dr. Burchi has also coordinated clinical trials and implemented a tele-medicine practice which received a certification of excellence among more than 100,000 professionals.
Dr. Elisabetta Burchi, MD, MBA
Translational research lead at Parasym
Take Control of Your Postural Heart Rate Abnormalities Naturally
Join thousands reclaiming stability and energy.
Participate in our Postural Heart Rate Abnormalities research program and save €70 on your Nurosym device.
*Research participation assessment takes less than 3 minutes
50+
studies referenced
4M+
successful sessions delivered
30
Day money back guarantee
certified medical device
Join thousands reclaiming stability and energy.
Participate in our Postural Heart Rate Abnormalities research program and save €70 on your Nurosym device.
*Research participation assessment takes less than 3 minutes
50+
studies referenced
4M+
successful sessions delivered
30
Day money back guarantee
certified medical device
30-Day Money-Back Guarantee
Experience Nurosym for 30 days. If you don’t notice improvements in energy, clarity, or stability, we’ll refund you—no questions asked.
We’re confident Nurosym’s scientifically proven vagus nerve stimulation can help you manage Postural Heart Rate Abnormalities symptoms naturally, without drugs or side effects.
Got questions? Here is everything you need to know
Symptoms we studied
These symptoms have been linked to autonomic nervous system imbalance and Vagus Nerve Impairment:
- Anxious states and Stress related symptoms
- Chronic Tiredness, Fatigue, Brain Fog, Burnout
- Digestive issues, irritable gut reflux, diarrhoea, constipation, bloating
- Sleep problems
- Negative thought
- Inflammatory symptoms
- Pain, headaches
- Memory & Attention problems
- Postural Heart Rate Abnormalities or fainting
- Post-Viral Symptoms
- Widespread body pain
Our latest research data also suggests Nurosym improves learning and short-term memory and cognition.
Nurosym also has been shown to promote relaxation, mood, sleep, healthy digestion, increased HRV, as well as to alleviate symptoms of stress, burnout, adrenal fatigue.
Parasym research is also investigating the impact of neuromodulation on athletic performance, muscle recovery, weight management problems, substance dependency and more.
If you’re not sure if Nurosym is for you consult with your health professional or contact our support by clicking the Support icon at the bottom right of the page.
When can I start feeling the effects?
The timeframe for experiencing the effects of Nurosym varies. Individuals with severe symptoms may notice improvements within 1 to 3 days, while others may see results within 4 to 6 weeks. Rest assured, the transformative benefits of Nurosym will be within reach.
Is Nurosym safe?
Neuromodulation via Nurosym is considered safe when used as intended.
Nurosym has these certificates.
– It is based on scientific evidence
– It is safe to use
– It has demonstrated scientific efficacy
Be sure to read the important safety information before use. Thousands of users have tested the device and no serious adverse effects have been reported in studies to date.
What does it feel like?
Feels like a pleasant, light vibration or tingling sensation in your ear.
Are there any additional costs or subscription fees?
There are no additional costs or fees, only the one-time purchase of the Nurosym.
Before using Nurosym
Read the instructions for use before using Nurosym. However, it’s possible this may not be enough to fully explain the safe and effective use of Nurosym in your particular situation. Ask your health professional or contact Nurosym care if you have any questions about how to use Nurosym or require any further clarification.
Only use Nurosym as described in the instructions for use or as otherwise directed by your health professional. Remove jewelry that may interfere with the electrode location (earrings etc.) before using Nurosym. Do not use Nurosym if the skin on the tragus is broken, cracked or numb.
What is the difference between Nurosym and other devices claiming to stimulate nervous system?
Important Safety Note: Exposing the nervous system to untested electrical currents or using DIY Transcutaneous Electrical Nerve Stimulation (TENS) devices carries risks, including potential nerve damage. Prioritize safety and efficacy in your choice.
Devices claiming to affect vagus nerve differ significantly, impacting their effectiveness and safety. Even small differences in factors like waveform and site placement can yield notable results. Most importantly, level of scientific evidence is crucial.
Nurosym is the leading non-invasive vagal neuromodulation system used in scientific research– with over $10M deployed in scientific studies, 50+ published papers in leading journals covering our exciting and scientifically significant results. Our device is one of a few registered medical devices with safety & efficacy confirmed by regulatory bodies in EU.
How long should I use Nurosym each day for optimal results?
We recommend using Nurosym for 1 hour each day, however, benefits can be seen with as little as 15 minutes of use.
Can I perform other activities while using it?
Yes, you can experience the benefits of Neurostimulation anywhere, anytime while doing any activity.
Do I need a prescription to purchase Nurosym?
No. However, we recommend that you consult with your health professional if you’re unsure whether Nurosym is right for you.
What are the details of your 30-day guarantee?
If you try Nurosym daily for 30 days and aren’t happy with your results, we’ll send you a fund refund. No questions asked.
Given the remarkable results Nurosym has had in scientific studies and with our customers around the world, we’re confident in its health restoring effects. Our goal will always be to restore our collective health – restoring health for as many people as we can and in turn, restoring the health of our planet. If Nurosym doesn’t work for you for any reason, we’re happy to send you a refund. This refund period is available 30 days after the date of purchase and expires the following week (37 days after the date of purchase).
Does Nurosym come with a warranty?
Yes! We offer a one-year warranty with every Nurosym device.
How long do orders take to ship?
Orders are processed and dispatched within 1-3 business days.
When will my order arrive?
Nurosym is shipped via priority tracked and signed couriers, so delivery times will vary based on shipping location. When you checkout, you’ll receive an estimated shipping time for your order.
What is in the Nurosym Package?
- Nurosym device
- Earpiece
- USB charger
- Case
- Quick start guide
How to use Nurosym?
REFERENCES:
- Chakraborty, P., Farhat, K., Morris, L., Whyte, S., Yu, X., & Stavrakis, S. (2023). Non-invasive vagus nerve stimulation in postural orthostatic tachycardia syndrome. Arrhythmia & Electrophysiology Review, 12, e31. https://doi.org/10.15420/aer.2023.20
- Diedrich, A., Urechie, V., Shiffer, D., Rigo, S., Minonzio, M., Cairo, B., Smith, E. C., Okamoto, L. E., Barbic, F., Bisoglio, A., Porta, A., Biaggioni, I., & Furlan, R. (2021). Transdermal auricular vagus stimulation for the treatment of postural tachycardia syndrome. Autonomic Neuroscience, 236, 102886. https://doi.org/10.1016/j.autneu.2021.102886
- Geng, D., Liu, X., Wang, Y., & Wang, J. (2022). The effect of transcutaneous auricular vagus nerve stimulation on HRV in healthy young people. PLOS ONE, 17(2), e0263833. https://doi.org/10.1371/journal.pone.0263833
- Kim, A. Y., Marduy, A., de Melo, P. S., Gianlorenço, A. C., Kim, C. K., Choi, H., Song, J.-J., & Fregni, F. (2022). Safety of transcutaneous auricular vagus nerve stimulation (taVNS): A systematic review and meta-analysis. Scientific Reports, 12, 22055. https://doi.org/10.1038/s41598-022-25864-1
- Stavrakis, S., Chakraborty, P., Farhat, K., Whyte, S., Morris, L., Asad, Z. U. A., Karfonta, B., Anjum, J., Matlock, H. G., Cai, X., & Yu, X. (2024). Noninvasive vagus nerve stimulation in postural tachycardia syndrome: A randomized clinical trial. JACC: Clinical Electrophysiology, 10(2), 346–355. https://doi.org/10.1016/j.jacep.2023.10.015
- Zheng, Z. S., Simonian, N., Wang, J., & Rosario, E. R. (2024). Transcutaneous vagus nerve stimulation improves Long COVID symptoms in a female cohort: A pilot study. Frontiers in Neurology, 15, 1393371. https://doi.org/10.3389/fneur.2024.1393371
The article does not in any way constitute as medical advice. Please seek consultation with a licensed medical professional before starting any treatment. This website may receive commissions from the links or products mentioned in this article.
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