These Medications Can Lead to Tooth Decay

It’s easy to assume that brushing, flossing, and regular dental checkups are all it takes to prevent cavities. However, certain medications can quietly undermine your oral health by reducing saliva flow or altering your mouth’s chemistry. If you’re taking prescription or over-the-counter drugs regularly, it’s worth knowing which ones may increase your risk for tooth decay—and how you can protect your smile.

How Medications Affect Your Teeth

Saliva plays a crucial role in keeping your mouth healthy. It washes away food particles, neutralizes acids, and helps protect your enamel. When medications interfere with saliva production or its composition, harmful bacteria can thrive, leading to dry mouth and an increased likelihood of cavities.

Some drugs may also contain sugar as an inactive ingredient, which can further promote decay, especially in liquid medications and chewable tablets. Over time, these effects can wear down enamel and make your teeth more vulnerable to damage.

Common Medications That Increase Cavity Risk

Several types of medications are known to cause dry mouth or other oral side effects. Below are some of the most common culprits:

Antihistamines and Decongestants

Drugs used to treat allergies, colds, and sinus problems—like diphenhydramine (Benadryl) and pseudoephedrine (Sudafed)—are notorious for reducing saliva flow. While they may ease congestion or sneezing, they can leave your mouth feeling parched and more prone to decay.

Antidepressants and Antianxiety Medications

Selective serotonin reuptake inhibitors (SSRIs) and other mood-stabilizing medications can cause dry mouth as a side effect. Over time, decreased saliva can create the perfect environment for cavity-causing bacteria to multiply.

Blood Pressure Medications

Certain antihypertensive drugs, including beta-blockers and diuretics, are also linked to dry mouth. These medications are essential for managing heart health but can inadvertently make teeth more susceptible to decay.

Asthma Inhalers

While inhalers are lifesaving for those with asthma, some types can lead to oral dryness or even fungal infections when used frequently. Rinsing your mouth after each use can help minimize these risks.

Pain Relievers and Muscle Relaxants

Many over-the-counter and prescription pain medications can affect saliva production. Long-term use of opioids or muscle relaxants may heighten your risk of dental problems if proper oral hygiene isn’t maintained.

How to Protect Your Teeth

If you take one or more of these medications, don’t worry—you don’t need to stop using them to maintain a healthy smile. Instead, focus on preventive care. Drink plenty of water throughout the day, chew sugar-free gum to stimulate saliva, and avoid sugary snacks or drinks that can contribute to decay.

Your dentist may also recommend using fluoride toothpaste or mouth rinses to strengthen enamel and counteract the effects of dry mouth. Scheduling routine cleanings and exams ensures that any signs of decay are detected early and treated promptly.

Keeping Your Smile Healthy

Even if your medications put you at higher risk for cavities, proactive care can go a long way in protecting your teeth. With a few mindful habits and regular visits to your dentist, you can keep your smile strong and decay-free for years to come.

About the Practice

Dr. Drennan and Dr. Carlson provide personalized preventive care designed to support healthy smiles through every stage of life. We take a comprehensive approach to oral health, helping patients manage the effects of medications while preventing cavities and gum disease.

Call us at (817) 732-5522 or request an appointment online.