How To Prevent Drooling When Sleeping?

What Causes Drooling During Sleep?

Drooling happens when saliva pools in your mouth and escapes because your swallowing reflex slows down during deep sleep. At night, your facial muscles relax. If your mouth falls open, gravity pulls the saliva out.

The medical term for excessive drooling is sialorrhea. It is common and usually not a sign of a serious problem. Most people drool occasionally. But if it happens every night, there is usually a specific reason.

Common causes include:

• Sleeping on your side or stomach — gravity works against you
• Nasal congestion or allergies that force mouth breathing
• Enlarged tonsils or adenoids that block the airway
• Acid reflux that stimulates extra saliva production
• Certain medications that increase saliva or relax throat muscles
• Neurological conditions like Parkinson’s disease or stroke

Some people also produce more saliva naturally. That is usually harmless. The issue is not the amount of saliva but where it goes while you sleep.

How To Prevent Drooling When Sleeping

The most direct fix is changing your sleep position. Sleeping on your back keeps your mouth closed and lets gravity keep saliva in your mouth where it belongs.

If you have always been a side sleeper, this takes practice. Try placing a pillow behind your knees for comfort. Some people use a wedge pillow to keep their head slightly elevated. This also helps with acid reflux and nasal drainage.

For persistent side sleepers, a body pillow can help. It creates a barrier that makes it harder to roll onto your side during the night.

Treat Nasal Congestion First

If your nose is blocked, you will breathe through your mouth. Mouth breathing almost guarantees drooling. Your jaw drops open and saliva escapes.

Common causes of nighttime nasal congestion include:

• Allergies to dust mites, pet dander, or pollen
• Deviated septum
• Sinus infections
• Dry air in the bedroom

For allergies, an over-the-counter antihistamine taken before bed can help. Saline nasal sprays or a humidifier in the bedroom also reduce congestion. If you suspect a structural issue like a deviated septum, an ear nose and throat doctor can evaluate you.

One study found that people with chronic mouth breathing had significantly higher rates of drooling during sleep. Opening the nasal passage is often the missing piece.

Check Your Medications

Some medications increase saliva production. Others relax the muscles around your mouth and throat. Both effects can make drooling worse.

Common culprits include:

• Antipsychotics like clozapine
• Some Alzheimer’s medications
• Certain muscle relaxants
• Some sedatives

If you started a new medication around the same time the drooling began, that is worth discussing with your doctor. They may adjust the dose or switch you to a different drug. Do not stop any prescription medication without medical guidance.

Strengthen Your Mouth and Throat Muscles

Some people drool because their swallowing reflex is weak or their facial muscles are loose. This is more common as people age. Strengthening these muscles can help.

Orofacial exercises target the tongue, lips, and throat. They are sometimes called myofunctional therapy. A speech-language pathologist can teach you specific exercises.

Simple ones you can try at home:

• Press your tongue against the roof of your mouth and hold for 5 seconds
• Pucker your lips like you are about to whistle, hold for 5 seconds
• Swallow with your lips pressed together and your tongue on the roof of your mouth

These exercises train your mouth to stay closed and your throat to swallow more often during sleep. Evidence is limited but some people report improvement after a few weeks of consistent practice.

Consider a Mouth Guard or Oral Appliance

If you clench or grind your teeth at night, your jaw may be in an unnatural position. This can keep your mouth slightly open even when you are relaxed.

A dentist can fit you with a custom mouth guard. This keeps your jaw in a neutral position and helps seal your lips. Some people also benefit from a chin strap that gently holds the mouth closed during sleep.

These devices work best for people whose drooling is linked to jaw misalignment or teeth grinding. They are not a first-line solution for everyone.

When Drooling Might Signal a Deeper Problem

Most drooling is harmless. But in some cases, it can be a symptom of something more serious. You should see a doctor if:

• Drooling started suddenly in adulthood
• It is accompanied by slurred speech or trouble swallowing
• You have weakness on one side of your face or body
• It happens with choking or coughing during sleep
• You wake up gasping for air

These symptoms could indicate a stroke, sleep apnea, or a neurological condition. Sudden onset drooling in someone over 60 should always be evaluated.

Sleep apnea is worth special attention. People with sleep apnea often breathe through their mouth during the night. This leads to drooling. If you also snore loudly, wake up tired, or have pauses in breathing during sleep, a sleep study may be appropriate.

Simple Bedroom Adjustments

Sometimes the fix is simpler than you think. Try these low-effort changes:

• Use a firmer pillow that keeps your head aligned
• Sleep with a humidifier to prevent dry mouth
• Keep your bedroom cool — heat can make you sleep more deeply and relax muscles more
• Avoid alcohol before bed — it relaxes throat muscles and increases saliva

Alcohol is a common trigger that people overlook. Even one drink close to bedtime can make drooling worse. It suppresses the swallowing reflex and relaxes the muscles that keep your mouth closed.

Medical Treatments for Severe Drooling

For people with chronic severe drooling from neurological conditions, medical treatments are available. These are rarely needed for the average person who drools occasionally.

Options include:

• Anticholinergic medications that reduce saliva production
• Botox injections into the salivary glands
• Radiation therapy to the salivary glands in extreme cases
• Surgery to remove or redirect salivary ducts

These treatments have side effects. Dry mouth can lead to dental problems and difficulty swallowing. They are reserved for people whose drooling significantly affects their quality of life.

When to See a Specialist

If you have tried changing your sleep position, treating nasal congestion, and avoiding alcohol with no improvement, it may be time to see a specialist.

Start with your primary care doctor. They can check for underlying causes like allergies, reflux, or medication side effects. If needed, they can refer you to:

• An ear nose and throat doctor for structural issues
• A sleep specialist for possible sleep apnea
• A dentist for jaw alignment problems
• A speech-language pathologist for muscle retraining

Most people find relief with simple changes. But if drooling is persistent and bothersome, there are effective treatments available.