Mouth Taping for Snoring: Does It Work and Is It Safe?

Mouth taping — sticking porous tape over your lips at night to force nasal breathing — has become one of the biggest sleep trends on social media, promoted as a cure for snoring and much else besides. If you’re wondering whether it works and whether it’s safe, here is the short answer: a 2025 systematic review found little to no benefit, and sleep clinicians have raised genuine safety concerns, including a risk of restricted breathing in people with blocked noses.^[1]

No good evidence is our verdict — and for this remedy, unusually, the problem isn’t only that it probably won’t work. Taping your mouth shut can be actively risky for the very people most tempted to try it, and it can hide the warning signs of a condition that needs treating.

This article walks through what the trend claims, what the research actually shows, who should never tape, and what to do instead.

What the mouth-taping trend claims

The pitch is seductive in its simplicity: mouth breathing is “bad”, nasal breathing is “good”, so taping the mouth shut retrains you to breathe through your nose — supposedly curing snoring, improving sleep quality and delivering a long list of other benefits.

Researchers have taken these claims seriously enough to study them. A scoping review published in the American Journal of Otolaryngology set social-media claims about mouth taping against the available scientific evidence and found the claims far outrun the data.^[2] Most of what is asserted in short-form videos has simply never been demonstrated in trials.

There is a kernel of physiological sense here: snoring is the sound of relaxed throat tissue vibrating as air flows past, and it can originate from the nose, the mouth or both. But “tape the mouth shut” does nothing about the underlying reasons the airway narrows in the first place — the actual causes of snoring such as excess weight, alcohol, nasal obstruction and airway anatomy.

What the evidence actually shows

The most comprehensive look at mouth taping to date is a systematic review from researchers at Western University, published in PLOS One on 21 May 2025. It pooled 10 studies covering 213 patients with snoring or sleep-disordered breathing.^[1]

The findings:

• Only 2 of the 10 studies showed a slight improvement in the apnoea–hypopnoea index (a measure of breathing interruptions per hour), and only in people with mild obstructive sleep apnoea.
• The remaining studies showed no benefit for snoring or sleep apnoea.
• Four studies discussed a potential asphyxiation risk when the mouth is taped in people whose nasal breathing is compromised.
• The authors concluded that the evidence does not support mouth taping as a treatment for sleep-disordered breathing.^[1][3]

Cleveland Clinic has likewise cautioned against the practice, noting the lack of evidence for the trend’s claimed benefits and advising people to talk to a doctor rather than reach for the tape.^[4]

Set against a fashionable trend with millions of views, that is a strikingly consistent scientific verdict: at best a marginal effect in the mildest cases, and nothing for everyone else.

The safety problem

The deeper problem: masking sleep apnoea

There is a second, quieter danger. Snoring is the most common symptom of obstructive sleep apnoea (OSA), a condition in which the throat repeatedly collapses during sleep^[5] — and OSA is spectacularly underdiagnosed: an estimated 936 million adults aged 30–69 worldwide have it, more than 85% of them undiagnosed.^[6]

If tape muffles your snoring without treating the airway collapse underneath, it can silence the very alarm bell — loud snoring, witnessed pauses, gasping — that would otherwise send you or your partner to a doctor. Untreated sleep apnoea is linked to high blood pressure, stroke, type 2 diabetes, heart disease, depression and accident risk.^[7] Quieter is not the same as safer. Our article on snoring versus sleep apnoea explains how to tell the difference.

Who should not tape their mouth

Based on the concerns raised in the research and by clinicians, do not try mouth taping if any of the following applies:

• You have any nasal obstruction: a deviated septum, chronic congestion, rhinitis, hay fever, nasal polyps or enlarged tonsils or adenoids.^[1]
• You have, or might have, undiagnosed sleep apnoea — loud frequent snoring, witnessed pauses in breathing, gasping or choking at night, morning headaches or heavy daytime sleepiness.^[8]
• You’ve been drinking alcohol or taking sedatives, both of which further relax the airway and blunt your ability to wake and respond.
• The person being taped is a child.

Given that the review found essentially no benefit even for people outside these groups, the honest conclusion is that there’s no group for whom taping is clearly worthwhile.

What to do instead

The appeal of mouth taping is that mouth-breathing at night often signals a real problem. The evidence-based response is to treat the problem, not to seal the symptom.

1. Fix your nasal breathing. Chronic night-time nasal congestion roughly doubles the odds of habitual snoring.^[9] Treating allergies and using nasal strips or dilators to open the nose addresses the reason your mouth falls open in the first place — without removing your backup airway. See our guide to nasal strips, dilators and congestion.

2. Get assessed if you have warning signs. If your snoring is loud and frequent, or comes with pauses, gasping or daytime sleepiness, the right move is a proper assessment — screening questionnaires and, where needed, a sleep study. Our when to see a doctor guide covers the Epworth scale, STOP-Bang and what a sleep study involves. The NHS advises seeing a GP if lifestyle changes don’t help or if your breathing stops and starts during sleep.^[7]

3. Use approaches with actual evidence. Weight loss, cutting evening alcohol, side-sleeping, mouth and throat exercises, mandibular advancement devices and CPAP all have far stronger research behind them than tape ever has. Start with our complete guide to stopping snoring.

Verdict

No good evidence — and real safety concerns. Ten studies and 213 patients later, mouth taping has produced no convincing benefit for snoring, a marginal signal in mild sleep apnoea only, and documented worries about restricted breathing in people with blocked noses.^[1] It is one of the rare home remedies where the sensible advice is not “it probably won’t help but can’t hurt” — it can hurt. Skip the tape; treat the cause.