In short
- In a 2022 Healthcare study of mouth breathers with mild sleep apnea, 13 of 20 people cut their snoring index by at least half when they slept with their mouths taped, so 7 did not.
- The NHS says snoring comes from the tongue, mouth, throat or nasal airways vibrating as you breathe, so closing the mouth doesn't cover every source.
- A 2014 case series in Sleep and Breathing found that 17 of 25 people with swollen nasal turbinates snored while breathing through the nose, and their snoring eased when they breathed through the mouth.
- Cleveland Clinic says alcohol, sedatives and even lack of sleep can relax the muscles of the upper airway and lead to snoring, and that back sleepers are more likely to snore than side sleepers.
- In the 2022 mouth tape study, 75% of participants had positional sleep apnea, worse on their backs, and breathing events while lying on their backs fell significantly with tape.
- The NHS says daytime sleepiness, breathing that stops and starts, or gasping and choking in your sleep can mean sleep apnoea, which needs a doctor.
If you're still snoring with mouth tape on, the snoring is probably coming from somewhere other than an open mouth. Tape closes one path for air. It can't open a stuffy nose, hold your tongue forward or stop your throat from relaxing after a glass of wine. The good news is that each of those has its own clue and its own next step, and many people find the answer is tape plus one more change rather than giving up on it.
Does mouth tape stop snoring?
Research: limited (what this means)Mouth tape stops snoring for some people, mostly those whose snoring comes from sleeping with their mouth open. The best-known study, published in Healthcare in 2022, gave 20 mouth breathers with mild sleep apnea a second sleep test a week after the first, taken with their mouths taped. Thirteen of them cut their snoring index by at least half, and the median snoring index fell by 47%. That's a real result, and it also means 7 of the 20 didn't reach that mark.
The study had two details that matter if you're still snoring. Anyone whose tape had come off by morning was left out, and people with a blocked nose were given medication and a nasal spray before taping. So the people in it had their noses cleared first. A 2025 review in PLOS One looked at 10 studies with 213 patients in total and rated all of them as poor quality, so nobody knows yet exactly who responds and who doesn't. Our guide to whether mouth tape helps snoring covers the research in more depth.
Why are you still snoring with your mouth closed?
You're still snoring because snoring has more than one source. The NHS says snoring is caused by your tongue, mouth, throat or the airways in your nose vibrating as you breathe, because these parts relax and narrow while you sleep. Tape deals with the mouth. The others carry on.
Here are the most common reasons, with a clue for each and what to try.
| Likely cause | A clue it might be you | What to try next |
|---|---|---|
| Stuffy or narrow nose | Snoring sounds nasal, or you feel you have to work to breathe through your nose | Clear your nose before bed, try a nasal strip, see a doctor if it's constant |
| Tongue falling back | Snoring carries on with your lips sealed and your nose clear | Side sleeping; ask a dentist or doctor about a mouthpiece that brings the tongue forward |
| Sleeping on your back | Snoring is worse on your back or quieter when you turn over | Train yourself to sleep on your side |
| Alcohol or sedatives | Snoring is worse on nights you drink | Skip alcohol in the evening and compare |
| Sleep apnea | Gasping, choking, pauses in breathing, daytime sleepiness | Stop taping and see a doctor |
Can you snore through your nose?
Yes, you can snore through your nose, and for some people that's the reason tape doesn't help. A 2014 case series in Sleep and Breathing looked at 25 people with swollen inferior turbinates, the ridges of tissue inside the nose, and a sleep study showing either primary snoring or mild sleep apnea. Seventeen of them, or 68%, snored while breathing through their nose, and their snoring eased or stopped when they breathed through their mouth. It's a small study from one hospital, but it shows nasal snoring is real.
If that's you, sealing your lips pushes all your breathing through the part that's making the noise. Possible clues include a nose that often feels blocked, or snoring that seems no quieter, or even louder, with tape on. The NHS lists nasal dilators, strips, decongestants and nasal sprays as treatments when snoring comes from blocked or narrow airways in the nose. Our guide on how to sleep with a stuffy nose goes further.
A blocked nose is also a safety issue. Sleep Foundation says people with nasal congestion or blockage shouldn't use mouth tape, because nasal breathing may not be possible. Take the nose test on our nose test page before you tape.
Could your tongue be the problem?
Your tongue can cause snoring that tape won't touch. The NHS lists the tongue partially blocking the back of your throat as one cause of snoring, and the treatment it names is a mouthpiece that brings your tongue forward, called a mandibular advancement device. Cleveland Clinic adds that a large tongue, big tonsils or enlarged adenoids can restrict airflow.
Only a dentist or doctor can tell you whether your tongue is involved and whether a mouthpiece makes sense, so it's worth asking if tape, a clear nose and side sleeping haven't quietened things.
Does sleeping on your back make snoring worse?
Sleeping on your back does make snoring more likely. Cleveland Clinic says back sleepers are more likely to snore than side sleepers, and the NHS lists sleeping on your back among the things that make snoring more likely. Sleep Foundation notes that people with and without sleep apnea snore less on their sides.
The mouth tape study points the same way. In it, 75% of participants had positional sleep apnea, meaning it was worse on their backs, and breathing events while lying on their backs fell significantly with tape. Tape seemed to help with what happens on your back, but turning onto your side can help too, and the two work fine together. The NHS suggests sewing a tennis ball into the back of your sleepwear, or using a special pillow or wedge, to stay on your side. See our guide to the best sleep position for breathing.
Can alcohol make you snore even with tape on?
Alcohol can make you snore even with your lips sealed. Cleveland Clinic says alcohol, sedatives and even lack of sleep can relax the muscles in your upper airway once you fall asleep, which can limit airflow and lead to snoring. Tape holds your lips together. It does nothing for relaxed throat muscles.
The NHS says not to drink too much alcohol and not to take sleeping pills, which can sometimes cause snoring. A simple test is to compare a few nights without evening alcohol to a few nights with it, keeping the tape the same. More on this in alcohol and snoring.
Could it be sleep apnea?
Snoring that carries on with tape could be a sign of sleep apnea, and that's the one cause you shouldn't try to fix on your own. The NHLBI lists frequent loud snoring, breathing that starts and stops, gasping for air and daytime sleepiness among the symptoms. The NHS says to see a GP if you feel sleepy in the day, your breathing stops and starts, or you gasp or choke in your sleep.
Mouth tape is not a treatment for sleep apnea. Sleep Foundation says people with obstructive sleep apnea who aren't using CPAP shouldn't use mouth tape, because it can make breathing disruptions worse. If any of those signs sound familiar, stop taping and get checked. Our sleep apnea warning signs guide lists what to look for.
What should you try next?
The best next step is to match the fix to the clue. Start by recording yourself for a few nights, or ask a partner, so you know whether the snoring changes with position, alcohol or a blocked nose.
Clear your nose first
If your nose feels even a little blocked, deal with that before taping. A saline rinse, a decongestant your pharmacist suggests or a nasal strip can help. Cleveland Clinic lists nasal strips, flexible bands that stick to the outside of your nose, as one way to keep nasal passages open. Studies of nasal strips for snoring have had mixed results, according to Sleep Foundation, but pairing a strip with tape makes sense when your nose is the weak link.
Change your position
Try a week of side sleeping with tape and compare it to your back. If the difference is big, position is part of your snoring.
Cut evening alcohol
Give yourself a few nights without alcohol close to bedtime and listen for the change.
Give it a fair trial
One night tells you little. Change one thing at a time for about a week so you can tell what's working.
When should you see a doctor?
See a doctor if your snoring is loud and comes with gasping, choking, pauses in your breathing or heavy daytime sleepiness. See one too if your nose is blocked most of the time, if one side never clears, or if nothing you change makes a difference. If you're pregnant, ask your clinician before trying mouth tape or any new sleep product. We don't recommend mouth tape for children.
Check this first. Skip mouth tape and see a doctor if you snore loudly, wake up gasping, have been told you stop breathing in your sleep, or can't breathe comfortably through your nose. More on safety
Our pick (paid partner): Titan Sleep System
If your snoring seems to come from a stuffy or narrow nose as well as an open mouth, our pick is the Titan Sleep System. This is our recommendation, not the result of testing or ranking products ourselves, and no published study used Titan's products.
The system pairs TitanAir Nasal Strips with Titan Bamboo Silk Mouth Tape. Titan describes the strips as drug-free external nasal dilators with flexible spring-loaded bands, worn just above the flare of the nostrils on the soft part of the nose. Titan describes the tape as a soft, breathable bamboo silk strip, worn across the lips.
Titan says the system doesn't address every cause of snoring, which fits everything above. It also says both products are third-party tested and certified PFAS-free, and they come with a 30-night guarantee: Titan refunds you if your sleep isn't better after 30 nights. That gives you time to work through the position and alcohol changes too.
Read next
Common questions
Why am I still snoring with mouth tape on?
Mouth tape only closes one route for air. The NHS says snoring can come from the tongue, throat or nose as well as the mouth. If you still snore with your lips sealed, the sound is probably coming from somewhere else, such as a narrow or stuffy nose, your tongue, or tissues that relax more when you sleep on your back.
Does mouth tape stop snoring?
For some people it helps. In a 2022 study of 20 mouth breathers with mild sleep apnea, 13 cut their snoring index by half or more when they slept with their mouths taped. The rest didn't reach that mark, and a 2025 review rated all the mouth taping studies as poor quality. It works best when the snoring comes from an open mouth.
Can you snore through your nose with your mouth closed?
Yes. A 2014 case series in Sleep and Breathing described people with swollen nasal turbinates who snored while breathing through the nose and snored less when breathing through the mouth. If your snoring sounds the same or worse with tape on, a stuffy or narrow nose may be the source, and that's worth raising with a doctor.
Should I keep using mouth tape if I still snore?
If tape is comfortable and you breathe easily through your nose, there's no harm in trying a few changes alongside it, such as side sleeping, skipping evening alcohol and adding a nasal strip. If your snoring is loud and comes with gasping, pauses in breathing or daytime sleepiness, stop and see a doctor instead.
Can alcohol make you snore even with mouth tape?
It can. Cleveland Clinic says alcohol and sedatives relax the muscles in your upper airway, which can limit airflow and lead to snoring. Tape keeps your lips closed, but it does nothing about relaxed throat muscles. The NHS lists drinking too much alcohol among the things that make snoring more likely.
Is snoring with mouth tape a sign of sleep apnea?
Not on its own, but it's worth paying attention to. The NHLBI lists loud snoring, breathing that starts and stops, gasping for air and daytime sleepiness among sleep apnea symptoms. If any of those come with your snoring, take the tape off and talk to a doctor. Mouth tape is not a treatment for sleep apnea.
Sources
- The Impact of Mouth-Taping in Mouth-Breathers with Mild Obstructive Sleep Apnea: A Preliminary Study
- Breaking social media fads and uncovering the safety and efficacy of mouth taping in patients with mouth breathing, sleep disordered breathing, or obstructive sleep apnea: A systematic review
- Snoring exclusively during nasal breathing: a newly described respiratory pattern during sleep
- Snoring
- Snoring: Causes & Complications
- Sleep Apnea - Symptoms
- Mouth Taping for Sleep: Does It Work?
- Titan Sleep System
About this article
- Research
- 8 published sources, listed above.
- Evidence
- Limited. How we rate it
- Last checked
- November 1, 2026
- Funding
- Paid partner of Titan Recovery. Their ads are labeled.
- Found an error?
- Tell us. We log fixes on the corrections page.
* This content is for informational and educational purposes only and is not medical advice. It is not intended to diagnose, treat, cure or prevent any disease or health condition. Talk to a qualified healthcare provider about your health.