How a snoring mouthpiece works
Snoring starts in your jaw. Here is what happens when you sleep, and how VitalSleep helps.
See it work in two minutes
A full walkthrough. What it is, how it fits, and how you adjust it.
- Helps open the airway so air moves quietly while you sleep
- Moves the lower jaw forward with the patented Accu-Adjust System, set to your snoring
- Molds to your teeth for a fit that stays put
- Adjustable and comfortable, which many basic mouthpieces are not
Watch: the full walkthrough (1:58)
Where snoring starts
You fall asleep. Your jaw relaxes and slides back. Your tongue slides back with it.
Now your airway is tight. Air has to push past loose tissue. The tissue shakes. That shake is the sound your partner hears.
The patented Accu-Adjust System
A snoring mouthpiece holds your lower jaw a little forward. That keeps your tongue out of the way. VitalSleep goes one step further. Its patented design lets you open your airway as much as your snoring needs, one millimeter at a time.
Simple drawing. Not to scale.
Start low
Begin at the lowest setting. It feels gentle on night one.
Move up in 1 mm steps
Every few nights, turn it one step forward. The range is 0 to 8 mm. Stop when the room is quiet.
Matched to how hard you snore
Light snorer? A low setting may be all you need. Loud snorer? Move it further forward. A fixed mouthpiece guesses. You set yours to your snoring.
Only as far as you need
Every jaw is different. Most people find their setting in the first week.
Watch: how to adjust it (0:41)
What happens while you sleep
Your jaw stays forward
The trays stop it from sliding back.
Your tongue stays forward too
It is attached to your jaw, so it moves with it.
Your airway stays open
Nothing is crowding it now.
Air moves quietly
Less crowding. Less shaking. Less noise.
Fitted to you in minutes
Hot water softens it in 45 seconds. Bite down for 30 seconds. It molds to your teeth. No dentist. No waiting.
VitalSleep comes in two sizes. Not sure which? Take the 10-second fit quiz. Get the wrong one? We send the other. Free size exchange.
The front opening lets you breathe through your mouth. It is free of latex, BPA and metal, and made in the USA.
Watch: how to fit it (0:34)
1Heat to soften
Drop it in hot water for 45 seconds.
2Mold to your teeth
Bite down firmly for 30 seconds.
3Set the opening
Move the lower tray forward in 1 mm steps until it feels right.
4Sleep quietly
Wear it every night. Rinse it in the morning.
Myth vs. science
Myth
- It pulls your jaw way out of place.
- I breathe through my mouth, so it won't work for me.
- One size can't fit everyone.
Science
- The move is small. It mostly stops your jaw from sliding back.
- VitalSleep leaves room to breathe through your mouth.
- It molds to your teeth, comes in two sizes, and you set the position to match your snoring.
What the research shows
These studies tested jaw-forward mouthpieces as a group, not VitalSleep itself. They show why holding the jaw forward matters. They are not a promise. Tap a card to read the study.


One customer's recording
Real SnoreLab data from one customer. Before: loud spikes all night. During use: a quiet, steady line. Same phone. Same bed. This is one person, not a study. Results vary.
What to expect
This is what customers most often tell us. Results vary.
You mold it and wear it
Start at the lowest setting. Extra saliva is normal. So is knowing it is in your mouth.
Your jaw settles in
Some early jaw or gum tenderness is common and passes. Move forward 1 mm at a time, not all at once.
You find your setting
Somewhere between 0 and 8 mm there is a spot that works for you. Many couples say this is when they move back into the same room.
VitalSleep is FDA-cleared to reduce snoring. It is not for sleep apnea. If you wake up gasping or still tired after a full night, talk to a doctor first.
Common questions
What does it feel like?
Like a small, soft sports guard. The first night or two feel new. You may notice extra saliva or feel your jaw. That fades. Start at the lowest setting and it feels gentle.
How long until it is quieter?
Some people notice a change the first night. Others need a week or two to find their setting. Move up one step every few nights. Results vary.
Can I breathe through my mouth?
Yes. There is room for air through the mouth, so a stuffy nose is not a problem.
What if I get the wrong size?
We send the other size. Free size exchange. You also have 60 nights to decide, with a full money-back guarantee.
Does it help with sleep apnea?
No. VitalSleep is FDA-cleared to reduce snoring. It is not for sleep apnea. If you stop breathing at night, gasp awake, or wake up tired most days, see a doctor first.
How long does it last?
Every VitalSleep comes with a one-year unlimited warranty. If anything goes wrong in that year, we replace it. Free replacement.
VitalSleep is an FDA-cleared Class II device for the reduction of snoring. It is not meant to treat sleep apnea or any other medical condition. Results vary. The research figures on this page come from studies of jaw-advancement mouthpieces as a group. They are not studies of VitalSleep. If you think you have sleep apnea, see a doctor. VitalSleep is protected by U.S. Patent No. 12,201,549.
Snoring has a cause. VitalSleep works on it.
The VitalSleep adjustable anti-snoring mouthpiece gently moves the lower jaw forward to open the airway. FDA-cleared. Made in the USA. Over 600,000 adults since 2011.
Transform Your Sleep60 nights to decide. Free replacements for 1 year.