Benzonatate

Applies to benzonatate: oral capsule, oral capsule liquid filled

Along with its needed effects, benzonatate may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking benzonatate:

Rare

• Confusion
• difficult breathing
• difficulty with speaking
• seeing things that are not there
• shortness of breath
• tightness in the chest
• wheezing

Get emergency help immediately if any of the following symptoms of overdose occur while taking benzonatate:

Symptoms of overdose

• Change in consciousness
• convulsions (seizures)
• loss of consciousness
• no blood pressure or pulse
• restlessness
• shakiness in the legs, arms, hands, or feet
• stopping of the heart
• trembling or shaking of the hands or feet
• unconsciousness

Some side effects of benzonatate may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Less common or rare

• Burning sensation in the eyes
• constipation
• dizziness (mild)
• drowsiness (mild)
• headache
• itching
• nausea or vomiting
• skin rash
• stuffy nose

Applies to benzonatate: oral capsule

The most serious side effects reported were bronchospasm, laryngospasm, and cardiovascular collapse.

Frequency not reported: Bronchospasm, laryngospasm, cardiovascular collapse, hypersensitivity

Frequency not reported: Sedation, headache, dizziness, mental confusion, visual hallucinations.

Frequency not reported: Nasal congestion, numbness of the chest

Frequency not reported: Constipation, nausea, GI upset

Frequency not reported: Pruritus, skin eruptions

Frequency not reported: Sensation of burning in the eyes

Frequency not reported: Vague "chilly" sensation