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:
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What do the vagus and trigeminal nerves actually do?
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How does Long COVID damage these nerves-and what symptoms result?
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Is taVNS (ear stimulation) better than tcVNS (neck stimulation)?
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What's the safest way to start if I'm sensitive or reactive?
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How can I use TENS devices at home for nerve stimulation?
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What's the difference between vagus nerve exercises and actual stimulation?
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Can vagus nerve stimulation help with anxiety, insomnia, or POTS?
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What does forehead-based trigeminal nerve stimulation help with?
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Why do some people feel worse at first-and how do you manage it?
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Can overstimulation be harmful?
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How long should I continue using nerve stimulation?
You'll also get:
