Polypharmacy and Dry Mouth: When Multiple Medications Compound the Problem

What causes dry mouth? That’s the million-dollar question, and for better or worse, there are multiple answers. Dry mouth usually stems from something else, such as treatment for head and neck cancer, medication, autoimmune disease, and more. Polypharmacy, taking multiple medications at the same time, is also a common cause of dry mouth.

 

Traditionally more common in older adults, today polypharmacy is not unheard of in the younger generation. Medications for anxiety, depression, and attention disorders, plus antidiabetic and anti-obesity medications like Ozempic, Wegovy, Victoza, and Saxenda, have coalesced to create a generation that is no stranger to afflictions traditionally associated with the elderly. As polypharmacy becomes more prevalent across different age demographics, so does dry mouth.

 

No matter what age you are, if you’re dealing with dry mouth, there ARE solutions and management options. If you’re dealing with dry mouth caused by polypharmacy, there is one standout solution: The SaliPen, a non-pharmacological device that stimulates the salivary glands naturally to produce more saliva. 

 

In this blog post, we’ll discuss how polypharmacy causes dry mouth and why a non-pharmacological solution is the ideal treatment for people taking multiple medications. 

 

Understanding Polypharmacy in the Context of Dry Mouth

Polypharmacy is typically defined as taking several medications at once; some say three or more, others say four or five. While it is becoming more common among younger people, it’s mainly concentrated among older adults; as people age, they strive to manage multiple chronic conditions such as hypertension, diabetes, depression, heart disease, and more. 

 

Research shows that nearly 40% of the global elderly population is exposed to polypharmacy, with prevalence more common in developed regions and in nursing homes. Moreover, there is a clear dose-response relationship: the more medications someone takes, the higher the likelihood and severity of dry mouth. 

 

One study found that the odds of xerostomia in people who take 11+ medications are 3.34; in those who take 7-10 medications, the odds are 2.07, and in people who take 4-6 medications, the odds of xerostomia are 1.38, compared to people who take less than 3 medications. 

 

Anticholinergic Effects and Dry Mouth 

The mechanism behind medication-induced dry mouth involves interference with the nervous system pathways that regulate saliva production. Salivary glands rely on parasympathetic stimulation and sympathetic input for fluid secretion. Many drugs, specifically anticholinergics,  disrupt this balance by blocking acetylcholine receptors and reducing saliva flow. 

 

However, even drugs not classified as anticholinergic, such as antidepressants, antihistamines, antihypertensives and more, can still have anticholinergic effects, making dry mouth a prevalent pharmacological symptom. 

 

When several medications are taken together, i.e. when polypharmacy occurs, the risk of dry mouth compounds. A single drug might cause mild dryness, but multiple agents targeting similar pathways work together to reduce salivary flow. 

 

This cumulative anticholinergic burden, i.e., when the total impact of many drugs exceeds what any one drug would cause alone,  is a key factor in dry mouth. For instance, patients with hypertension, depression, and allergies may take a diuretic, an antidepressant, and an antihistamine concurrently, creating the perfect storm for severe xerostomia.

 

Dry Mouth Symptoms and Quality of Life

While not fatal, dry mouth can have serious repercussions, especially if left untreated. Saliva plays a crucial role in oral health, neutralizing acids, washing away food particles, providing antimicrobial protection, and aiding digestion. 

 

A lack of saliva can lead to many unpleasant symptoms that can seriously detract from your quality of life: 

 

• Increased dental caries, gum disease, and tooth loss 
• Oral infections
• Difficulty chewing, swallowing, and talking
• Increased risk of choking
• Dysgeusia (a change in taste), reduced appetite, and nutritional issues
• Sleep disruptions

 

Difficulty eating, talking, and sleeping can make it hard to get through the day, which is why seeking dry mouth treatment is so important. 

 

Dry Mouth Treatment for Polypharmacy Patients

When polypharmacy causes dry mouth, it’s not a signal to give up medications; many medications treat life-threatening conditions, and giving them up would be dangerous.  Polypharmacy is a signal to seek treatment for dry mouth, which you can get without giving up much-needed medications. 

 

Dry mouth management strategies include:

• Medication changes: Speak with a trusted healthcare provider about safely reducing unnecessary drugs, switching to alternatives with lower xerogenic potential, or adjusting doses/timing (i.e., taking drying meds in the morning).
• Saliva stimulation: The SaliPen is a handheld device that delivers targeted electrical stimulation to the oral cavity, stimulating the salivary glands to produce more saliva naturally. 
• Saliva substitutes: Over-the-counter products such as gels, sprays, and rinses offer temporary relief in the form of artificial saliva. 
• Oral hygiene: Dry mouth increases the risk of oral and dental challenges, so maintaining excellent oral hygiene helps reduce the risks and symptoms.
• Lifestyle adjustments: While not a cure for dry mouth, several lifestyle adjustments can help ease the symptoms: sipping water frequently throughout the day, using a humidifier at night, and avoiding caffeine, alcohol, and tobacco.

 

A Note About Prescription Drugs and Dry Mouth

Dry mouth has many causes: medications, polypharmacy, treatment for head and neck cancer, autoimmune diseases, injury, and more. In some cases, medication to stimulate the salivary glands can prove very effective. Pilocarpine and cevimeline are two of the most common prescription medications for salivary gland stimulation.

 

While effective, people who already experience polypharmacy may not want to add another medication to the mix, as polypharmacy is a known cause of dry mouth. In this situation, a natural, non-pharmacological treatment course may be preferable.

 

Consult your healthcare provider to discuss whether adding another medication is indeed the right option for dry mouth treatment. Review non-drug treatments like the SaliPen, artificial saliva, and lifestyle adjustments to determine whether those are more appropriate for your specific situation. 

 

Early Intervention Reduces Dry Mouth Symptoms

Many dry mouth treatment options are effective and easily available, but early intervention is an important factor in treatment. Don’t wait until symptoms get out of control; schedule regular dental check-ups and consult with doctors to catch dry mouth before it gets worse.

 

FAQs

What is polypharmacy?

Polypharmacy is defined as taking multiple medications at the same time. 

 

Does everyone who experiences polypharmacy get dry mouth?

No, polypharmacy doesn’t always cause dry mouth, but it is a common cause. Research has shown a direct correlation between the number of medications a person takes and the incidence of dry mouth. 

 

Does dry mouth affect only elderly people?

Dry mouth is more common in the older population because its causes are more common in those demographics; taking a medication that lists dry mouth as a side effect, polypharmacy, treatment for head and neck cancer, and autoimmune disease are more common in older adults, but not exclusive to them. This is especially true today, when the younger demographic is more exposed to medications and potential polypharmacy. 

 

Can I stop taking my medications if they’re causing dry mouth?

Never stop or change medications without consulting your doctor or dentist. They can review your regimen, suggest alternatives, or adjust doses safely.

 

Are there long-term risks if dry mouth goes untreated?

While dry mouth isn’t fatal, its symptoms can seriously impact daily activities such as eating, talking, and sleeping. Dry mouth also increases the risk of cavities, gum disease, and oral infections; proactive management prevents these complications.

 

Why is the SaliPen an ideal dry mouth treatment for people dealing with polypharmacy?

The SaliPen treats dry mouth without drugs or medications, stimulating the salivary glands naturally with gentle electric impulses. This is ideal for people who experience dry mouth as a result of polypharmacy, since adding another medication to the mix – even one designed to treat dry mouth – may further compound the issue. 

 

Where can I purchase the SaliPen?

You can purchase it here, from the official website.