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What Is Benzonatate Side Effects?

Benzonatate (Tessalon) Uses, Side Effects, Dosage, Interactions

What is Benzonatate Side Effects?


Benzonatate is a medication commonly prescribed to relieve coughing. It works by numbing the throat and lungs, reducing the urge to cough. While benzonatate can be effective in treating coughs, it is important to be aware of the potential side effects that may occur.

Common Side Effects

Most people who take benzonatate do not experience any severe side effects. However, there are some common side effects that you should be aware of. These include drowsiness, dizziness, headache, constipation, and nausea. These side effects are usually mild and go away on their own. If they persist or become severe, it is important to consult your healthcare provider.


Drowsiness is one of the most common side effects of benzonatate. This can make you feel tired or sleepy during the day. It is important to avoid driving or operating heavy machinery if you experience drowsiness. If drowsiness persists or becomes bothersome, talk to your doctor about adjusting the dosage or trying a different medication.


Dizziness is another common side effect of benzonatate. It can make you feel lightheaded or unsteady on your feet. To minimize the risk of falling, take your time when getting up from a sitting or lying position. If dizziness persists or worsens, speak to your healthcare provider.


Some people may experience headaches while taking benzonatate. These headaches are usually mild and go away on their own. However, if the headaches are severe or persistent, it is important to seek medical advice. Your doctor may recommend adjusting the dosage or trying a different medication.


Constipation is a potential side effect of benzonatate. This can cause difficulty in passing stools or infrequent bowel movements. To prevent constipation, it is important to drink plenty of fluids, eat a high-fiber diet, and engage in regular physical activity. If constipation becomes severe or persists, consult your healthcare provider for further guidance.


Some individuals may experience nausea while taking benzonatate. This can cause a feeling of queasiness or an urge to vomit. If you experience nausea, try taking the medication with food. If the nausea persists or becomes severe, contact your doctor for further evaluation.

Rare but Serious Side Effects

While rare, there are some serious side effects that may occur with benzonatate. These include allergic reactions, chest pain, difficulty breathing, and hallucinations. If you experience any of these symptoms, seek immediate medical attention.

Allergic Reactions

Allergic reactions to benzonatate are rare but can be serious. Symptoms of an allergic reaction may include hives, rash, itching, swelling, severe dizziness, or difficulty breathing. If you notice any of these symptoms, stop taking the medication and seek emergency medical help.

Chest Pain

In some cases, benzonatate may cause chest pain. This can be a sign of a serious condition, such as bronchospasm or pneumonia. If you experience chest pain while taking benzonatate, seek immediate medical attention to rule out any serious underlying issues.

Difficulty Breathing

If you have difficulty breathing or experience shortness of breath while taking benzonatate, it may indicate a severe allergic reaction or a more serious respiratory problem. Seek immediate medical attention if you have any breathing difficulties.


Hallucinations are an extremely rare side effect of benzonatate. If you start experiencing hallucinations or any other unusual mental changes, contact your healthcare provider immediately.


Benzonatate can be an effective medication for treating coughs, but it is important to be aware of the potential side effects. Most side effects are mild and go away on their own, but it is essential to seek medical advice if they become severe or persistent. If you experience any rare but serious side effects, such as allergic reactions, chest pain, difficulty breathing, or hallucinations, seek immediate medical attention. Always consult with your healthcare provider before starting any new medication.

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