Your Nervous System Has an Off Switch. We Found It.
ZenBud helps gently shift your body out of fight-or-flight and back toward calm, using precise ultrasound vagus nerve stimulation.
1.2K Reviews • 4.5 Average rating
No electrical shock
90-Day money-back guarantee
Dave Asprey’s Nervous System Biohack
ZenBud was featured on The Human Upgrade with Dave Asprey, where Dave explores the science behind at-home ultrasound stimulation and its potential role in supporting the vagus nerve, focus, sleep, emotional balance, and stress resilience.
MEET ZENBUD
Your Nervous System Has an Off Switch. We Found It.
ZenBud is a vagus nerve stimulator — a lightweight wearable that sits like a headset and uses focused ultrasound to help activate your body's natural calm response. The same technology used safely in medical imaging for decades, now in your hands.
Not electrical— ultrasound reaches deeper without discomfort
Not a drug— works with your body's own relaxation pathways
Not complicated— one button, works from the first session
CE certified— built to medical-grade safety standards
THE MECHANISM
How ZenBud Works
You put it on
Headset over your ears · 20 sec setup
Start your session
Ultrasound reaches your vagus nerve
Parasympathetic response activates
Heart rate settles · tension eases
HRV improves over time
Track it on Oura · Apple Watch · Garmin
GET STARTED
ZenBud
Gentle ultrasound activates your body's natural calm response — measurable relief in five quiet minutes.
- 90-day money-back guarantee
- 1-year manufacturer warranty
- Free travel case & silicone pads
- Free 7-day trial for BreathSource
TESTIMONIALS
What people love about ZenBud
The best proof is how ZenBud fits into real life, from winding down before bed to resetting after a stressful day.
Visit ZenBud Community
"Crazy nice product. Great for driving the parasympathetic nervous system."
"I’ve tried countless tools to optimize recovery and focus. ZenBud surprised me. After just a few sessions, I felt noticeably calmer and more centered. It’s now part of my nightly wind-down"
"As you know, consistency is key to improving and maintaining good mental health. ZenBud makes it simple to stay on track..."
"I find myself staying being able to much more quickly switch from a state of fight or flight to rest and digest allowing me to stay more regulated throughout the course of a day. Incredible technology"