Severe hypersensitivity reactions (including bronchospasm, laryngospasm and cardiovascular collapse) have been reported which are possibly related to local anesthesia from sucking or chewing the capsule instead of swallowing it. Severe reactions have required intervention with vasopressor agents and supportive measures.
Isolated instances of bizarre behavior, including mental confusion and visual hallucinations, have also been reported in patients taking BENZONATATE in combination with other prescribed drugs.
Accidental Ingestion and Death in Children
Keep BENZONATATE out of reach of children. Accidental ingestion of BENZONATATE resulting in death has been reported in children below age 10. Signs and symptoms of overdose have been reported within 15-20 minutes and death has been reported within one hour of ingestion. If accidental ingestion occurs, seek medical attention immediately (see OVERDOSAGE).
There is currently no manufacturer warning information available for this drug.
Benzonatate, a non-narcotic oral antitussive agent, is 2, 5, 8, 11, 14, 17, 20, 23, 26-nonaoxaoctacosan-28-yl p(butylamino) benzoate; with a molecular weight of 603.7.
Each soft gelatin capsule, for oral administration, contains 100 mg or 200 mg benzonatate USP. In addition, each capsule contains the following inactive ingredients: D&C Yellow No. 10, gelatin, glycerin, and purified water.