Dry mouth: causes, medications & what really helps

A constantly dry mouth is more than just unpleasant. When the tongue sticks to the palate, speaking becomes difficult and every bite without water becomes a challenge, there is often more behind it than too little drinking. Dry mouth – medically xerostomia – particularly affects people who take medications regularly. Over 400 active ingredients can throttle saliva flow. Here you will learn what causes there are, which medications dry out your mouth and how you find out whether your medication is behind it.

1. What you can do right now

2. Why saliva is so important

Saliva is far more than water in the mouth. Your salivary glands produce up to 1.5 litres of a fluid daily that protects your teeth, kills germs, makes swallowing easier and takes over the first step of digestion. When this production stalls, your entire mouth notices it immediately: the mucous membranes become cracked, bacteria multiply more easily and the risk of tooth decay rises markedly.

Chronic dry mouth is not a cosmetic problem – it is a health risk that can favour tooth loss, fungal infections and malnutrition.

3. Common causes of dry mouth

3.1 Medications – the most common cause

Over 400 active ingredients can cause dry mouth. Particularly often affected are:

3.2 Too little drinking

The simplest reason is often overlooked. Older people in particular lose their sense of thirst, drink too little and notice the creeping dehydration only late. Target: 1.5–2 litres of water daily, spread evenly over the day.

3.3 Mouth breathing and snoring

Those who breathe through the mouth at night wake up in the morning with a dried-out mouth. This can be due to a blocked nose, snoring or sleep apnoea. Night-time dry mouth is particularly insidious because saliva production goes down to a minimum in sleep anyway.

3.4 Stress and anxiety

Adrenaline – released with stress, stage fright or panic – inhibits saliva production immediately. Those who suffer from chronic stress can be affected permanently. Your "spit drying up" with stage fright is not a figure of speech but pharmacology.

3.5 Conditions

Diabetes mellitus, Sjögren's syndrome (an autoimmune disease in which the immune system turns against the salivary glands), thyroid problems and radiotherapy in the head and neck area can damage the salivary glands permanently. With these causes, a medical assessment is imperative.

4. Consequences of dry mouth – why you should not ignore them

Many underestimate what happens when saliva is permanently missing. Without its protective film, the mouth becomes vulnerable:

• Tooth decay: saliva neutralises acids and remineralises the tooth enamel. Without it, every meal attacks the teeth – tooth decay arises considerably faster and more aggressively.
• Fungal infections (oral thrush): white, wipeable coatings on the tongue or cheek mucosa – particularly common in older people with several medications.
• Bad breath (halitosis): saliva flushes bacteria away. When it is missing, odour-forming germs multiply unhindered.
• Gum diseases: periodontitis is favoured, the gums become more sensitive and bleed more easily.
• Swallowing and speech problems: dry mucous membranes make chewing, swallowing and speaking laborious. In older people this can lead to malnutrition.

5. What helps against dry mouth?

Immediate measures

When your mouth is dry right now, these steps help: regularly drink small sips of water (1.5–2 litres a day, spread evenly), suck sugar-free chewing gum or sour sweets to stimulate saliva flow, and rinse the mouth with a sip of water before you speak or eat. Water-rich foods such as cucumber, melon and tomato help additionally.

Long-term measures

Lasting better mouth moisture is provided by good bedroom humidity (40–60 %, a humidifier in winter), the consistent avoidance of alcohol, coffee, smoking and salty snacks as well as conscious breathing through the nose. From a dental point of view, fluoride toothpaste without SLS is recommended (sodium lauryl sulfate – a foaming agent that can irritate the mucous membrane), an alcohol-free mouthwash and daily dental floss.

Pharmacy products with severe dry mouth

When home remedies are not enough, the pharmacy has specially developed saliva substitute products: sprays and gels with hyaluronic acid moisten the mucous membrane for hours, mouthwashes with electrolytes imitate the composition of natural saliva and lozenges with moisturising ingredients are well suited for on the go. With massive xerostomia, the doctor can also prescribe prescription-only saliva stimulants (e.g. pilocarpine).

6. Is it down to your medication?

Particularly when dry mouth has begun creepingly or coincides in time with a new prescription, you should check your medication. brite helps with this:

7. When should you have dry mouth assessed?

Dry mouth is mostly harmless – but these warning signs should lead you to the doctor:

• The dryness has lasted for several weeks and is not improving.
• You notice swallowing difficulties, a burning tongue or loss of taste.
• White coatings in the mouth (an indication of a fungal infection / oral thrush).
• The gums bleed or tooth decay develops noticeably quickly.
• You additionally have dry eyes or joint pain (Sjögren's syndrome?).
• A new medication was started shortly before the complaints began.

8. Preparing for the doctor's appointment – your checklist

So that your doctor finds the cause quickly, prepare this information:

• Since when? When exactly did the dry mouth begin?
• Medications: a complete list – over-the-counter remedies, nasal sprays and vitamins too.
• Daily pattern: worst in the morning? At night? All day long?
• Accompanying symptoms: dry eyes, joint pain, frequent thirst, dental problems?
• Changes: new medications, a dose increase, a new condition?

How brite supports you in keeping an overview

brite brings structure into your observation and helps you to find the cause of your dry mouth.

• Digital medication plan – all preparations at a glance – so you recognise immediately whether a medication dries out your mouth. To the medication plan
• Interaction check – checks whether your medication combination inhibits saliva flow particularly strongly. Check now
• Intake reminder – reminds you to drink enough with drying medications. Set up a reminder

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