Benzonatate
Benzonatate Prescribing Information
Benzonatate is indicated for the symptomatic relief of cough.
Adults and Children over 10 years of age:
Usual dose is one 100 mg or 200 mg capsule three times a day as needed for cough. If necessary to control cough, up to 600 mg daily in three divided doses may be given
Hypersensitivity to benzonatate or related compounds.
Potential Adverse Reactions to benzonatate may include:
Deliberate or accidental overdose has resulted in death, particularly in children.
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.

Benzonatate Capsules, USP contain 100 mg or 200 mg of benzonatate, USP.
Benzonatate Capsules also contain: D&C Yellow No. 10, gelatin, glycerin, methylparaben sodium and propylparaben sodium.
The white imprinting ink contains the following inactive ingredients: ammonium hydroxide, isopropyl alcohol, n-butyl alcohol, propylene glycol, shellac glaze, simethicone and titanium dioxide.
FDA approved dissolution test specifications differ from USP.
Benzonatate acts peripherally by anesthetizing the stretch receptors located in the respiratory passages, lungs, and pleura by dampening their activity and thereby reducing the cough reflex at its source. It begins to act within 15 to 20 minutes and its effect lasts for 3 to 8 hours. Benzonatate has no inhibitory effect on the respiratory center in recommended dosage.