Protecting Oral Health During Flu Season
Sep 28, 2025
Every year, as temperatures drop and flu season peaks, many people prepare by getting their flu shot, stocking up on tissues, and practicing good hygiene. What often gets overlooked, however, is the effect the flu can have on your oral health. The combination of fever, medications, and changes to daily routines can create the perfect storm for dental issues.
At Monarch Dentistry, we encourage patients to view oral care as an important part of staying healthy during the colder months. Taking small, mindful steps can protect your teeth and gums while you recover from seasonal illnesses.
Dehydration and Dry Mouth
When you are sick, fever and reduced fluid intake often lead to dehydration. Add in the use of cold and flu medications — especially antihistamines and decongestants — and saliva production can slow dramatically. This condition, called dry mouth, is more than just uncomfortable. Without enough saliva, bacteria thrive, acids are not neutralized, and the risk of cavities increases.
To combat this, make a conscious effort to stay hydrated. Water should be your go-to, even if you are tempted by sugary sports drinks or sodas. Herbal teas without added sugar can also provide comfort and hydration. Using a humidifier at home can further ease dryness.
The Role of Sugar in Medication
Many liquid cough syrups and lozenges contain added sugar. While they may soothe your throat, frequent use can coat your teeth in sugar and contribute to decay. When possible, choose sugar-free versions of medications or rinse your mouth with water after use. Chewing sugar-free gum with xylitol can also stimulate saliva and help protect your teeth.
Vomiting and Tooth Enamel
One unpleasant side effect of flu and stomach-related viruses is vomiting. Stomach acid is extremely corrosive and can erode tooth enamel if left on the teeth. Many people instinctively brush their teeth immediately after being sick, but this can actually spread the acid and cause more damage. The safer approach is to rinse your mouth with a teaspoon of baking soda mixed in water, or at least plain water, and wait about 30 minutes before brushing.
Fatigue and Skipped Routines
Being sick often means staying in bed, and many people skip their normal routines like brushing and flossing. While it may feel like a small thing at the time, neglecting your oral care for several days allows plaque to build up quickly. Try to maintain at least the basics: brushing twice daily and flossing once, even if you feel too tired for your full routine.
Protecting Others While Protecting Your Smile
Flu season is also a time to be extra mindful of hygiene. Replace your toothbrush after you recover to avoid reinfection. Avoid sharing utensils, cups, or even toothpaste tubes with family members. Practicing these small habits protects both your health and theirs.
When to See Your Dentist
After recovering from the flu, it can be helpful to schedule a dental cleaning, especially if your illness lasted several weeks or involved prolonged use of medications. Your dentist can check for early signs of enamel erosion, cavities, or gum irritation that may have developed during your recovery.
Staying Resilient Year-Round
Flu season is challenging, but your oral health does not need to suffer. By staying hydrated, making mindful choices with medications, maintaining basic routines, and being cautious about enamel erosion, you can minimize the impact of illness on your teeth and gums.
At Monarch Dentistry, we are here to support your health in every season. If you have lingering sensitivity or notice changes in your mouth after being sick, book a visit so we can help restore comfort and keep your smile strong.
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