Hypersensitivity
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.
Psychiatric Effects
Isolated instances of bizarre behavior, including mental confusion and visual hallucinations, have also been reported in patients taking TESSALON in combination with other prescribed drugs.
Accidental Ingestion and Death in Children
Keep TESSALON out of reach of children. Accidental ingestion of TESSALON 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.
TESSALON, 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 TESSALON Perle contains:
Benzonatate, USP 100 mg
TESSALON Perles (capsules) also contain: D&C Yellow 10, gelatin, glycerin, methylparaben and propylparaben.