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Dry mouth at night: why does it happen and how to fix it?

Do you often wake up with a dry mouth? This common problem can be uncomfortable and disruptive to your sleep. Nighttime dry mouth is usually caused by excessive mouth breathing, which prevents saliva from properly moisturizing the mouth. In addition to causing a scratchy throat and bad breath when you wake up, it can also have more serious consequences on dental health and sleep quality. Fortunately, there are effective solutions to prevent mouth breathing and get a more restful night's sleep.

Why do we have dry mouth at night?

Dry mouth at night is often a sign that you are breathing through your mouth instead of using your nose. Normally, nasal breathing helps to humidify and filter the air before it reaches your lungs. In contrast, when you breathe through your mouth, the air passes directly through and quickly dries out the oral mucous membranes. Several factors can contribute to this phenomenon:

  • Nasal congestion due to allergies, colds or a deviated nasal septum.
  • A bad mouth breathing habit, often developed in childhood.
  • Too dry an environment in the room, caused by heating or air conditioning.
  • Certain medications that reduce saliva production.
  • Sleep apnea, which causes irregular breathing and constant opening of the mouth during the night.

The consequences of nocturnal mouth breathing

Breathing through your mouth at night may seem harmless, but in the long term it can have several negative impacts:

  • Oral dehydration : A constantly dry mouth can promote infections and inflammation.
  • Dental problems : Reduced saliva production promotes cavities and gum disease.
  • Reduced sleep quality : Poor oxygenation can lead to nighttime awakenings and a feeling of fatigue upon waking.
  • Snoring and sleep apnea : Mouth breathing accentuates these disorders and disrupts deep sleep.

How to avoid dry mouth at night?

To avoid mouth breathing and reduce dry mouth syndrome, it is essential to adopt a few good habits:

  1. Improve nasal breathing : Make sure your nose is clear before sleeping by using natural solutions such as nasal washing with saline solution or a hot shower to decongest the airways.
  2. Maintain a good humidity level in the room : Air that is too dry increases dry mouth. Using a humidifier can help maintain an optimal humidity level.
  3. Correct sleeping posture : Sleeping on your back with an ergonomic pillow can encourage nasal breathing and prevent mouth opening.
  4. Use nasal strips : BreatheBetter nasal strips are an effective solution to promote nasal breathing and prevent mouth breathing. By widening the airways, they facilitate the passage of air through the nose and allow for a deeper and more restful sleep.
BreatheBetter Nasal Strips


If you are looking for a natural solution to avoid mouth breathing and prevent dry mouth syndrome, BreatheBetter nasal strips can help you. By facilitating breathing through the nose, they reduce dry mouth, snoring and improve sleep quality. Easy to use, they are ideal for those who want to find a peaceful sleep without effort.

If your mouth is dry at night, your nose may be partially or completely blocked, forcing you to breathe through your mouth. Find out what to do in case of a blocked nose to breathe better: Blocked nose? What to do?

Adopting these best practices and using the right solutions can help you breathe properly at night and avoid the discomfort associated with dry mouth. By improving your nighttime breathing, you will benefit from more restful sleep and better overall health.

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