Tessalon (Benzonatate): How This Cough Capsule Works and Safety Rules

Tessalon (generic name benzonatate) is a non-narcotic prescription medicine that can help ease a stubborn cough. If you’ve been struggling with a dry, irritating cough—whether from a cold, flu or other respiratory condition—understanding how tessalon works and using it safely can help you find relief.

What Is Tessalon (Benzonatate)?

Tessalon is the brand name for benzonatate, approved by the FDA in 1958. Unlike many cough medicines that are taken by mouth to coat the throat or suppress cough reflex at the brain, tessalon acts on sensory nerves in the lungs, airways and pleura (lining around the lungs). It is available in:

• Capsules of 100 mg and 200 mg
• Prescription only (not over-the-counter)

Because tessalon targets nerve endings directly, it does not contain opioids and is less likely to cause drowsiness, constipation or dependence.

How Tessalon Works

Tessalon’s active ingredient, benzonatate, is a local anesthetic. Here’s what happens after you swallow a capsule:

1. Absorption
   The capsule dissolves in your stomach and small intestine, releasing benzonatate.

2. Numbing Sensory Nerves
   Benzonatate travels through your bloodstream to the lungs and airway lining, where it desensitizes the stretch receptors.

3. Cough Reflex Suppression
   By reducing the sensitivity of these nerve endings, tessalon decreases the signals sent to the cough center in your brain, leading to fewer or milder coughs.

Who Can and Cannot Take Tessalon

You may be prescribed tessalon if you have:

• A dry, irritating cough that disrupts sleep or daily activities
• Nonproductive cough due to acute bronchitis, upper respiratory infection or other causes

Avoid tessalon if you:

• Are allergic to benzonatate, other anesthetics (e.g., procaine, tetracaine) or any capsule ingredients
• Have difficulty swallowing capsules or are at risk of breaking them in your mouth (risk of mouth and throat numbing)
• Are younger than 10 years old
• Are pregnant or breastfeeding without your healthcare provider’s approval

Always share your full medical history and list of current medications with your doctor before starting tessalon.

Dosage and Administration

Follow your doctor’s directions exactly. Typical adult dosing:

• 100 mg–200 mg three times a day as needed for cough
• Do not exceed 600 mg per day

Key points for safe use:

• Swallow capsules whole; do not chew, crush or dissolve. If a capsule bursts in your mouth, it can cause severe numbing of the mouth and throat, choking or even heart problems.
• Take with food or a full glass of water if you feel stomach upset.
• If you miss a dose and still have a cough, wait until your next scheduled dose. Do not double up.

Possible Side Effects

Most people tolerate tessalon well. Common side effects include:

• Dizziness
• Drowsiness
• Headache
• Mild nausea or upset stomach
• Constipation

These usually resolve on their own. However, stop taking tessalon and seek medical help immediately if you experience:

• Sudden numbness of the mouth, tongue or throat
• Chest pain or rapid heartbeat
• Severe confusion, hallucinations or seizures
• Allergic reactions: hives, swelling of face/lips, difficulty breathing

Safety Rules and Precautions

To get the most benefit from tessalon and reduce risks, follow these guidelines:

• Never chew or suck on the capsule.
  Chewing can cause intense local anesthesia of the oral passages, leading to choking, aspiration or life-threatening reactions.

• Store out of reach of children.
  Accidental chewing by a child can be fatal. Keep capsules in a secure place.

• Monitor for allergic reactions.
  If you’ve had sensitivities to other anesthetics, discuss this with your doctor first.

• Avoid driving or operating heavy machinery until you know how tessalon affects you.
  Drowsiness or dizziness can occur, especially when combined with alcohol or sedatives.

• Discuss other medications and supplements.
  Certain drugs (e.g., sedatives, antihistamines) can enhance drowsiness.

• Use only for short-term relief.
  Tessalon controls symptoms but does not treat the underlying cause of your cough. If cough lasts more than 7–10 days, worsens or is accompanied by fever, weight loss or blood in sputum, contact your doctor.

• Pregnancy and breastfeeding.
  Limited data exist. If you are pregnant or nursing, weigh the benefits against potential risks with your healthcare provider.

Drug Interactions

Tessalon has relatively few interactions, but remain cautious with:

• Central nervous system depressants (e.g., benzodiazepines, alcohol)
  – May increase drowsiness or dizziness
• Monoamine oxidase inhibitors (MAOIs)
  – Possible additive effects on the central nervous system

Always inform your doctor or pharmacist about every medication (prescription, over-the-counter) and supplement you take.

When to Seek Medical Help

Coughing can be a symptom of a range of issues, from mild viral infections to more serious conditions. Speak to a doctor right away if you have:

• Fever over 100.4°F (38°C) with cough lasting more than 3 days
• Coughing up blood or green/yellow mucus
• Shortness of breath, chest pain, wheezing or swelling in the legs
• Unexplained weight loss

For less urgent concerns, you might also consider a free, online symptom check, using the doctor approved Ubie Symptom Checker.

Additional Tips for Managing Cough

Alongside taking tessalon, simple home measures can help:

• Stay hydrated: warm fluids can soothe the throat.
• Use a cool-mist humidifier to keep airway passages moist.
• Elevate your head when lying down to reduce coughing at night.
• Avoid irritants like smoke or strong fragrances.

Final Thoughts

Tessalon (benzonatate) can be an effective tool for calming a dry, persistent cough without the risks of opioid cough suppressants. By taking it exactly as prescribed, watching for side effects and following safety rules, you can minimize discomfort and get back to your normal routine.

Always remember:

• Keep tessalon capsules out of reach of children.
• Do not chew or break open capsules.
• Disclose all health conditions and medications to your doctor.
• Monitor for any severe reactions.

If your cough is severe, lasts more than a week, or you experience any serious symptoms, speak to a doctor right away. For a quick, doctor-approved online review of your symptoms, consider a free, online symptom check, using the doctor approved Ubie Symptom Checker.