Dry mouth affects roughly 22% of the global population, and the number climbs to 30% or more in people over 65. The good news: most cases respond well to a combination of simple daily habits, targeted products, and dietary tweaks. What works best depends on what’s causing it, so understanding the source is worth a few minutes before diving into solutions.
Figure Out What’s Causing It
The single most common cause of dry mouth is medication. Antidepressants, blood pressure drugs, antihistamines, decongestants, sleep aids, muscle relaxants, opioids, and ADHD medications all reduce saliva production through different mechanisms. Even over-the-counter allergy pills and acid reflux drugs can do it. If your dry mouth started around the same time you began a new medication, that connection is worth raising with your prescriber. Sometimes a dose adjustment or switch to a different drug in the same class resolves the problem entirely.
Beyond medications, other common triggers include mouth breathing (especially during sleep), dehydration, smoking or vaping, alcohol use, and autoimmune conditions like Sjögren’s syndrome. Radiation therapy to the head and neck can damage salivary glands permanently. Aging itself doesn’t directly reduce saliva, but older adults tend to take more medications that do.
Stay Hydrated the Right Way
Sipping water throughout the day is the simplest starting point, but how you drink matters. Small, frequent sips work better than downing a glass all at once. Keep a water bottle nearby and take a sip every few minutes rather than waiting until you feel thirsty. Letting small ice chips melt in your mouth can also provide slow, steady moisture.
During meals, sip water or a sugar-free drink to help with chewing and swallowing. Avoid caffeinated beverages like coffee, tea, and many sodas, since caffeine dries the mouth further. Carbonated drinks between meals are also worth skipping: without food to buffer the acidity, they promote tooth decay in an already vulnerable mouth. If you drink juice, choose varieties fortified with calcium and rinse with water afterward.
A homemade mouth rinse can help too. Mix one teaspoon of salt and one teaspoon of baking soda into one liter of water. This bland rinse hydrates your mouth, eases the feeling of dryness, and neutralizes the acid that builds up when saliva is low.
Use Saliva-Stimulating Products
Chewing sugar-free gum is one of the fastest ways to boost saliva flow. Gums sweetened with xylitol are especially useful because xylitol also fights the bacteria that cause cavities, a real concern when your mouth is dry. The effective daily dose of xylitol falls between three and eight grams, and frequent use matters more than a single large dose since xylitol concentration in saliva drops quickly after chewing stops. Aim for several pieces spread throughout the day rather than all at once.
Sugar-free hard candies work on the same principle: the sucking motion stimulates your salivary glands mechanically. Look for xylitol-sweetened options here as well. Over-the-counter saliva substitutes, sold as sprays, gels, and rinses, coat the mouth with a moisture layer that mimics natural saliva. These are especially useful right before bed or before meals. Avoid any mouthwash that contains alcohol, which worsens dryness.
Adjust What and How You Eat
Certain foods make dry mouth significantly worse. Tough meats, raw vegetables, bread, pretzels, rice, chips, muffins, and cakes all absorb what little moisture you have and can feel like sandpaper in a dry mouth. Instead, focus on soft, moist foods served at cool or room temperature. Adding broth, sauces, gravies, or butter to meals makes them easier to chew and swallow. Yogurt and non-acidic spreads like jelly can help food go down more smoothly.
Spicy and highly acidic foods tend to irritate dry oral tissues, so dial those back if they’re causing discomfort. Cool foods before eating them, since hot temperatures can aggravate soreness in the mouth.
Manage Dry Mouth at Night
Nighttime is when dry mouth hits hardest. Saliva production naturally drops during sleep, and mouth breathing makes it worse. A humidifier in your bedroom adds moisture to the air and can make a noticeable difference. Both cool-mist and warm-mist models work. Small personal humidifiers, some with face masks that direct moisture toward your nose and mouth, are another option.
If you tend to breathe through your mouth at night, addressing nasal congestion (with saline spray or nasal strips) can help keep your mouth closed. Applying a saliva substitute gel to your gums and tongue right before bed creates a moisture barrier that lasts longer than water alone. Keeping water on your nightstand for middle-of-the-night sips is a small habit that adds up.
Protect Your Teeth
Saliva does more than keep your mouth comfortable. It washes away food particles, neutralizes acids, and delivers minerals that strengthen tooth enamel. When saliva drops, cavity risk spikes. People with chronic dry mouth often develop rapid tooth decay along the gum line, sometimes in teeth that were previously healthy.
Use a fluoride toothpaste and consider adding a prescription-strength fluoride rinse or gel if your dentist recommends one. Brush gently twice a day and floss daily. Avoid sugary snacks and drinks, which feed cavity-causing bacteria that saliva would normally keep in check. More frequent dental cleanings, every three to four months instead of every six, can catch problems early.
When OTC Options Aren’t Enough
If home strategies and over-the-counter products aren’t providing enough relief, prescription medications can stimulate your salivary glands directly. These drugs work by activating the nerve receptors that trigger saliva production. They’re typically taken three to four times a day and can meaningfully increase saliva flow in people whose glands still have some function.
The tradeoff is side effects. Sweating is the most common, sometimes heavy enough to be bothersome. Other possible effects include nausea, flushing, increased urination, and digestive upset. Most people find the side effects manageable when weighed against the relief, but it’s a conversation worth having with your doctor to see if the benefits justify the downsides in your case.
For dry mouth caused by a specific medication, the most effective long-term fix is often switching to an alternative drug that doesn’t affect saliva. Many drug classes have options with lower rates of dry mouth as a side effect. Your prescriber can usually identify one if you bring up the issue.