Mouth taping for sleep

What is mouth taping, and what is it supposed to do?

Mouth taping means putting a strip of tape, or a purpose-made patch, over your lips at night so that you have to breathe through your nose. It spread on social media, often as part of sleepmaxxing, and the promises are broad. Influencers claim it brings better sleep, healthier teeth and gums and less snoring, AFP reported in 2025. A 2025 scoping review found claims across social media running from more energy and a stronger immune system to better teeth; in the 50 TikTok videos it examined, sleep and oral health came up most, and few of the claims had ever been tested (Fangmeyer, Badger and Thakkar, 2025).

The idea underneath is reasonable. People normally breathe through the nose, which warms, humidifies and filters the air (Lee and colleagues, 2022), and habitual mouth breathing during sleep can cause snoring and sleep apnoea (Huang and Young, 2015). The question is not whether nose breathing is good. It is whether tape is a safe way to get there, and for whom.

Does mouth taping work?

Not in any way that has been shown well. The most thorough look so far is a 2025 systematic review covering 25 years of research. It found 10 studies of taping, sealing or strapping the mouth shut at night in people with mouth breathing, sleep-disordered breathing or obstructive sleep apnoea. They were small — 9 to 71 people each — and every one was rated poor quality (Rhee and colleagues, 2025).

Two of the 10 found a statistically significant improvement in sleep apnoea, and both were in people whose apnoea was mild:

• Lee and colleagues (2022), at a hospital in Taiwan: 20 mouth-breathers with mild sleep apnoea had a home sleep test without tape and another, taped, a week later. Breathing interruptions fell from a median of 8.3 to 4.7 an hour, and snoring roughly halved. It was a look back at clinic records, with no comparison group, and anyone whose tape came off in the night was left out.
• Huang and Young (2015): 30 people with mild sleep apnoea who habitually breathed through their mouths slept with a porous patch over their lips. Breathing interruptions fell from a median of 12.0 to 7.8 an hour and the snoring index from 146.7 to 40.0, again with no comparison group.

Even there, the reviewers called the gains “very minor” and their clinical meaning unclear, and the other studies found no difference. A 2026 review that set out to pool the evidence found only two taping studies to summarise — too few to combine (Alshehri and colleagues, 2026).

Outside sleep apnoea, the record is thinner still. In a randomised trial of 51 people with asthma, 4 weeks of taping at night made no difference to their morning peak flow or their symptoms (Cooper and colleagues, 2009). We could not find a trial that measured whether tape improves sleep itself in people who simply want better nights (Europe PMC, searched October 2026).

The firmest result for tape comes from a different setting. CPAP machines pump air through a mask to keep the airway open in people with sleep apnoea (NHS, Sleep apnoea). In a 2025 randomised crossover trial, 62 people with sleep apnoea who breathed through their mouths used theirs about 52 minutes a night longer, on average, when they also wore mouth tape (Meksukree and colleagues, 2025). That was tape added to a prescribed treatment, inside a clinical trial — not tape instead of one.

Is mouth taping safe?

Not for everyone. The studies chose their volunteers carefully, and many left out anyone with a blocked nose. The danger, as the 2025 reviewers put it, lies with people who sleep with their mouths open because something in the nose is in the way — exactly the people the studies tended to exclude (Rhee and colleagues, 2025). Three risks stand out.

A blocked nose

Four of the 10 studies in the review warned of a serious risk of suffocation if the mouth is sealed when the nose is blocked, or if the person is sick in the night. Allergies affecting the nose, a deviated septum and enlarged tonsils or adenoids are among the commonest reasons for breathing through the mouth in the first place (Rhee and colleagues, 2025).

Mouth breathing that is doing a job

In a 2024 study, sleep researchers closed the mouths of 54 sedated patients with sleep apnoea, on alternate breaths, by pressing under the chin. Across the group, airflow improved. But in those who breathed mostly through their mouths, it got worse, and narrowing at the soft palate, behind the nose, went with both more mouth breathing and a worse response to closing the mouth. For some people, the authors concluded, the open mouth is a way round an obstruction (Yang and colleagues, 2024).

Quieter snoring is not safer breathing

Loud snoring is one of the signs of sleep apnoea the NHS lists, and tape that quietens a snore tells you nothing about whether your breathing is stopping. One of the two positive studies itself advises against taping in moderate or severe apnoea, where it “may impose dangers rather than benefits” (Lee and colleagues, 2022).

Who should not try mouth taping?

On the evidence so far, nobody needs to. These people in particular should not:

• anyone whose nose is blocked or stuffy, for any reason — allergies, a deviated septum, enlarged tonsils or adenoids;
• anyone who snores loudly, gasps or chokes in their sleep, stops breathing for moments, or is very tired in the day, until a doctor has checked for sleep apnoea;
• anyone with diagnosed sleep apnoea, unless their sleep clinic suggests tape as an add-on to CPAP (Meksukree and colleagues, 2025);
• anyone who has been drinking or has taken a sleeping pill — the NHS links alcohol to sleep apnoea and warns that sleeping pills can make it worse;
• anyone who might be sick in the night;
• children: the studies’ participants had average ages of 38 to 64, and in children, sleep-disordered breathing is usually managed by removing the tonsils and adenoids (Rhee and colleagues, 2025). A child who snores or breathes through the mouth at night needs a doctor, not tape.

Does mouth tape help with snoring?

Sometimes it makes snoring quieter — in the two small studies above, the snoring index fell by around half or more — but those were people with mild sleep apnoea, and neither study had a comparison group. For snoring without sleep apnoea, the only randomised evidence uses tape as one part of a package. In a 2024 pilot trial, 42 couples completed 4 weeks of either a mouthpiece that holds the lower jaw forward, or a home routine of an external nasal dilator, a steroid nasal rinse, mouth tape and sleeping on one side. Bed partners rated the snoring much improved for 21 of 23 people with the mouthpiece and 11 of 19 with the routine, so tape’s own share can’t be separated out (Ioerger and colleagues, 2024).

The NHS advice on snoring is duller and safer: lose weight if you are overweight, sleep on your side, don’t smoke, don’t drink too much alcohol and don’t take sleeping pills. Beyond that, it depends on the cause. If your mouth falls open as you sleep, the NHS lists a chin strap or a mouthpiece that makes you breathe through your nose; if your nose is blocked or narrow, nasal dilators or strips, or sprays to reduce the swelling — chosen with a doctor (NHS, Snoring).

The rest of a calmer evening, from timing to winding down, is in the bedtime routine guide.

When is snoring a reason to see a doctor?

When it comes with signs of sleep apnoea, in which breathing stops and starts during sleep. The NHS lists them as:

• breathing that stops and starts while you sleep;
• gasping, snorting or choking noises;
• waking up a lot, and loud snoring;
• in the day, feeling very tired, finding it hard to concentrate, mood swings, or a headache when you wake up.

See a GP if your breathing stops and starts in your sleep, if you make gasping, snorting or choking noises, or if you always feel very tired during the day. These are hard to notice in yourself, so it helps to bring someone who has seen them. Sleep apnoea can be serious if it isn’t diagnosed and treated, and the tests can usually be done at home (NHS, Sleep apnoea).

It is also worth seeing a GP if snoring is having a big impact on your life or your partner’s, or if lifestyle changes haven’t helped (NHS, Snoring).