Benzonatate Side Effects
Not all side effects for benzonatate may be reported. You should always consult a doctor or healthcare professional for medical advice. Side effects can be reported to the FDA here.
For the Consumer
Applies to benzonatate: oral capsule, oral capsule liquid filled
In addition to its needed effects, some unwanted effects may be caused by benzonatate. In the event that any of these side effects do occur, they may require medical attention.
You should check with your doctor immediately if any of these side effects occur when taking benzonatate:Rare
- difficult breathing
- difficulty with speaking
- seeing things that are not there
- shortness of breath
- tightness in the chest
If any of the following symptoms of overdose occur while taking benzonatate, get emergency help immediately:Symptoms of overdose
- Change in consciousness
- convulsions (seizures)
- loss of consciousness
- no blood pressure or pulse
- shakiness in the legs, arms, hands, or feet
- stopping of the heart
- trembling or shaking of the hands or feet
Some of the side effects that can occur with benzonatate may not need medical attention. As your body adjusts to the medicine during treatment these side effects may go away. Your health care professional may also be able to tell you about ways to reduce or prevent some of these side effects. If any of the following side effects continue, are bothersome or if you have any questions about them, check with your health care professional:Less common or rare
- Burning sensation in the eyes
- dizziness (mild)
- drowsiness (mild)
- nausea or vomiting
- skin rash
- stuffy nose
For Healthcare Professionals
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
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