Why does benzonatate make me feel weird?

Some people are more sensitive to benzonatate's side effects than other. Common side effects include dizziness, drowsiness, and headache. But benzonatate usually causes less side effects than prescription cough syrups that contain codeine. When you first start taking benzonatate, it’s a good idea to avoid driving and other activities that require you to be alert. Wait to see how the medication affects you. And avoid other medications and substances that cause drowsiness, such as opioids, benzodiazepines, and alcohol. If you’re only taking benzonatate once a day, try taking it at bedtime. This can help limit coughing in the evening and drowsiness during the day. If you’re taking benzonatate more than once a day and side effects are interfering with your daily activities, talk to your prescriber. You may need a lower dosage or a different medication to manage your cough.