Nasal Strips, Mouth Tape, or Therapy: What Actually Helps You Breathe Through Your Nose

If you wake up with a dry mouth, snore, or have simply noticed that your mouth hangs open at rest, you have probably gone looking for a fix. What you find is a wall of products, each promising to be the answer.

Here is an honest breakdown of the main options, what the evidence actually says about each, and which ones treat the symptom versus the cause.

A note before we start: we do not sell any of these, and we earn nothing if you buy them. No affiliate links on this page. That is deliberate — you should be able to trust a clinical opinion without wondering who is paid when you click.

First, why nasal breathing is worth the effort

Your nose does work your mouth cannot: it filters particulates, warms and humidifies incoming air, and produces nitric oxide at roughly 900–1,100 parts per billion — a vasodilator that improves oxygen uptake and has antimicrobial properties. Mouth breathing bypasses all of it. We cover the physiology in more depth on our snoring and mouth breathing page.

External nasal strips

What they do: adhesive strips across the bridge of the nose that mechanically pull the nostrils open, widening the external nasal valve — the narrowest part of the nasal airway for many people.

Worth knowing: they are cheap, available anywhere, and carry essentially no risk. For people whose obstruction genuinely sits at the nostril opening, they can make a noticeable difference to nasal airflow and snoring volume.

The limit: if your obstruction is further back — a deviated septum, swollen turbinates, enlarged adenoids — a strip on the outside of your nose cannot reach it. Strips manage a symptom at one specific location. They do not change why you are mouth breathing.

Internal nasal dilators

What they do: small devices worn inside the nostrils to hold them open from within. Same principle as strips, different mechanism, and some people find them more effective or more comfortable to sleep in.

The same limit applies. They address the nostril, not the cause.

Mouth tape — and why we do not recommend it

This is the one that is everywhere on social media, so it deserves a direct answer rather than a diplomatic one.

A 2025 systematic review in PLOS One looked at ten studies on mouth taping. Only two found any benefit, and only in a subset of people with mild obstructive sleep apnea. The rest showed no difference. The authors warned of a serious risk of harm — including asphyxiation — for people taping indiscriminately, particularly anyone with nasal obstruction.

There is a second problem that gets less attention. Roughly 23.5 million Americans have sleep apnea and do not know it. So "I do not have sleep apnea" is not a statement most people are actually in a position to make. More than 60% of physicians surveyed said mouth taping risks delaying the diagnosis of a real sleep disorder, because it muffles the symptom that would otherwise have sent someone to a doctor.

Taping your mouth shut also does nothing to address why it falls open. If your tongue does not rest against your palate and your lips have no resting seal, tape is holding a door closed rather than fixing the hinge.

Treating congestion and allergies

This one is underrated. If you cannot breathe through your nose because it is genuinely blocked — allergic rhinitis, chronic congestion, a structural issue — then no amount of muscle retraining or taping will help until that is dealt with.

This is a conversation for your physician or an ENT, and it is often the fastest win available. Worth ruling out before spending money on anything else.

Myofunctional therapy

What it does: retrains the muscles of the tongue, lips and face — specifically tongue resting posture, lip seal, swallow pattern, and nasal breathing as the default. No device to wear, nothing to keep buying.

The evidence: a systematic review and meta-analysis of oropharyngeal and tongue exercises found snoring improved by roughly 50% in adults, consistently across questionnaires, visual analog scales, and snoring measured during sleep studies.

The honest trade-off: it is slower and it requires you to actually do the exercises. A nasal strip works tonight; therapy takes months. What you get for that is a change that persists without buying anything again.

So what should you actually do?

A sensible order of operations:

1. Rule out obstruction. If your nose is blocked, start with your physician or an ENT. Everything else is downstream of this.
2. Try a nasal strip. Cheap, harmless, and a useful diagnostic in itself — if it helps noticeably, your obstruction is probably at the nostril.
3. Skip the mouth tape unless a physician who knows your airway has specifically told you otherwise.
4. Consider whether it is a muscle problem. If your tongue sits low, your lips fall open at rest, and you have been a mouth breather for years, that is the pattern myofunctional therapy addresses.

Not sure which category you fall into? The two-minute screener on our snoring and mouth breathing page will give you a clearer read — your answers stay on your device.