Tessalon Perles (Benzonatate) Dosing Frequency
Tessalon Perles should be taken three times daily (every 8 hours), with a maximum of 600 mg per day in three divided doses. 1
Standard Dosing Regimen
- Usual dose: One capsule (100 mg, 150 mg, or 200 mg) three times daily as needed for cough 1
- Maximum daily dose: 600 mg divided into three doses 1
- Maximum single dose: Do not exceed 200 mg per dose 1
- Duration of action: Effects last 3 to 8 hours, with onset within 15-20 minutes 1
Critical Safety Warnings
Capsule Administration
- Must swallow capsules whole - never break, chew, dissolve, cut, or crush 1
- Breaking the capsule releases benzonatate in the mouth, causing temporary local anesthesia of oral mucosa and potential choking 1
- If numbness or tingling of tongue, mouth, throat, or face occurs, avoid eating or drinking until numbness resolves 1
Pediatric Considerations
- Only approved for children over 10 years of age 1
- Fatal accidental ingestions have occurred in children under 10 years, particularly those 2 years and younger 2
- Death has been reported within one hour of ingestion in children 1
- Keep completely out of reach of children due to high overdose fatality risk 1, 2
Missed Dose Management
- If you miss a dose, skip it and take the next dose at the scheduled time 1
- Never take two doses at once to make up for a missed dose 1
Overdose Risk Profile
- Signs of overdose can appear within 15-20 minutes and include restlessness, tremors, convulsions, seizures, cardiac arrest, and coma 1, 2
- Of 31 overdose cases reported to FDA, 20 were fatal 2
- Intentional overdoses carry significantly higher risk of serious adverse effects (22% experienced seizures, ECG changes, CNS depression, or death) compared to unintentional exposures (0.7%) 3
Clinical Context
While benzonatate is listed among antitussive options in lung cancer cough management guidelines at 100-200 mg four times daily 4, the FDA-approved labeling clearly specifies three times daily dosing with a 600 mg daily maximum 1. The FDA labeling takes precedence for safe prescribing practices.