Benzonatate 100 mg capsules are a non-narcotic cough suppressant (antitussive) prescribed to provide symptomatic relief from a dry, non-productive cough in adults and children aged 10 and older. Primary Uses Dry Cough Relief: It is used to manage irritating coughs caused by the common cold, flu, bronchitis, pneumonia, asthma, or emphysema. Throat & Lung Irritation: By numbing the airway tissues, it helps reduce the persistent urge to cough that causes chest and throat discomfort.