Tessalon Perles Dosing
For adults and children over 10 years of age, the recommended dose of Tessalon (benzonatate) is 100-200 mg three times daily as needed for cough, with a maximum daily dose of 600 mg in three divided doses 1.
Standard Dosing Regimen
- Usual dose: One 100 mg or 200 mg capsule three times daily as needed
- Maximum daily dose: 600 mg (divided into three doses)
- Age restriction: Only approved for children 10 years and older 1
Critical Safety Considerations
The capsules must be swallowed whole and never broken, chewed, dissolved, cut, or crushed 1. Release of benzonatate in the mouth produces temporary local anesthesia of oral mucosa and can cause choking. If numbness or tingling of the tongue, mouth, throat, or face occurs, patients should refrain from eating or drinking until numbness resolves 1.
Pediatric Safety Alert
Benzonatate is contraindicated in children under 10 years of age 1. Accidental ingestion has resulted in death in children, with signs of overdose (restlessness, tremors, convulsions, coma, cardiac arrest) occurring within 15-20 minutes and death reported within one hour of ingestion 1. The medication must be kept out of reach of children at all times.
Dosing Context from Clinical Guidelines
In the lung cancer cough management guideline, benzonatate is listed at 100-200 mg four times daily (qid) as a local anesthetic option for opioid-resistant cough that has not responded to other approaches 2. However, the FDA-approved dosing remains three times daily 1, and the guideline context is specifically for palliative care in lung cancer patients, not general cough suppression.
Clinical Efficacy Considerations
Research suggests benzonatate at 200 mg doses did not significantly inhibit cough-reflex sensitivity when used alone in acute viral cough, though combination with guaifenesin showed enhanced effect 3. A 2023 systematic review raised concerns about limited evidence for benzonatate's effectiveness, noting that existing studies have small sample sizes and significant biases 4.
Overdose Risk
Adults can experience fatal overdoses with benzonatate 1. Patients should never exceed a single dose of 200 mg or total daily dose of 600 mg. If a dose is missed, skip it and take the next scheduled dose—never double up 1.