Vagus & Trigeminal Nerve Stimulation - Paperback

Vagus & Trigeminal Nerve Stimulation
By Robert Groysman, MD

The first and only layperson's guide to both vagus and trigeminal nerve stimulation for Long COVID, dysautonomia, fatigue, brain fog, and more-told through the questions patients really ask.

If you're still struggling with strange, lingering symptoms after COVID-like brain fog, racing heart, gut problems, dizziness, anxiety, or nerve pain-your nervous system may be out of balance. You're not imagining it. And you're not alone.

This clear, patient-friendly guide by Long COVID physician Dr. Robert Groysman is here to help you ask the right questions-and finally get real answers.

This book covers what your doctors may not explain: how the vagus nerve and trigeminal nerve-two key regulators of your body's healing systems-can be gently stimulated to help reduce symptoms and support recovery.

You'll learn how these nerves affect your heart rate, gut, brain, immune system, and even hormone function-and how to activate them naturally or with safe, affordable devices at home.

What makes this book different?
✅ It's written for patients, not just professionals
✅ It's the only book available that explains trigeminal nerve stimulation (TNS) alongside vagus nerve stimulation (VNS)
✅ It's grounded in clinical experience, not vague theory
✅ It gives you actionable, step-by-step guidance using simple tools like TENS units, cold exposure, or breathwork

Inside, you'll find practical answers to questions like:

• What do the vagus and trigeminal nerves actually do?

• How does Long COVID damage these nerves-and what symptoms result?

• Is taVNS (ear stimulation) better than tcVNS (neck stimulation)?

• What's the safest way to start if I'm sensitive or reactive?

• How can I use TENS devices at home for nerve stimulation?

• What's the difference between vagus nerve exercises and actual stimulation?

• Can vagus nerve stimulation help with anxiety, insomnia, or POTS?

• What does forehead-based trigeminal nerve stimulation help with?

• Why do some people feel worse at first-and how do you manage it?

• Can overstimulation be harmful?

• How long should I continue using nerve stimulation?

You'll also get:

• Real answers to questions about side effects and troubleshooting

• Device comparisons, settings, and placement illustrations

• A structured plan for starting stimulation and building tolerance

• Tips on combining VNS/TNS with other treatments like pacing, hormone support, or gut repair

Whether you're dealing with Long COVID, ME/CFS, dysautonomia, POTS, MCAS, anxiety, or burnout, this book will help you understand how your nervous system works-and how to support it in healing.

About the Author:
Dr. Robert Groysman, MD is a board-certified anesthesiologist and pain medicine physician who's been helping patients with Long COVID since 2020. He specializes in treating vagus nerve dysfunction, dysautonomia, and nervous system injuries with a root-cause, whole-body approach. His patients helped inspire this book-and their questions shaped every chapter.

You're not broken. You're dysregulated.
This book shows you how to start resetting your nervous system-one simple question at a time.