Benzonatate: study card

Benzonatate — Non-narcotic antitussive. Study the mechanism, listed uses and warnings from the US label on one sourced card.

Generic name
Benzonatate
Class
Non-narcotic antitussive
Mechanism
Anesthetizes stretch receptors in the airways, lungs and pleura, damping the cough reflex at its source.
Used for
Symptomatic relief of cough in adults and children aged 10 years and older
Common side effects
Sedation; Headache; Dizziness; Constipation; Nausea
Warnings
Bronchospasm / laryngospasm if capsule chewed or sucked; Fatal overdose, particularly in children; Hypersensitivity to related compounds

Brand questions use only name pairings verified against the linked product source. Unverified pairings are withheld from these questions; the other study content remains available.

Read the source label ↗

Label date: 20260902 · For learning, not clinical decisions. US label and brand information; always consult the current source.

Source snapshot checked: 2026-10-21. The source document and selected fields were compared. The complete card has not had an independent clinical review.

Pronunciation

Benzonatate: ben-ZOE-na-tate

Pronunciation is shown for the US English generic name.

Body system

Respiratory · 19 Drug cards

Compare with related cards

Albuterol

Same body system: Respiratory

Mechanism: Activates beta-2 receptors on airway smooth muscle, raising cyclic AMP via adenylcyclase and relaxing bronchial smooth muscle.

On both cards: Common side effects — Headache; Dizziness

Only on the Albuterol card: Used for — Bronchospasm treatment or prevention in reversible obstructive airway disease, aged 4 or older; Exercise-induced bronchospasm prevention, aged 4 or older · Common side effects — Tachycardia; Pain; Pharyngitis · Warnings — Paradoxical bronchospasm; Cardiovascular effects; Hypokalemia

Promethazine / Dextromethorphan

Same body system: Respiratory

Mechanism: Promethazine: H1 receptor blocker with sedative and antiemetic effects. Dextromethorphan: acts centrally to raise the cough threshold.

On both cards: Common side effects — Sedation; Dizziness

Only on the Promethazine / Dextromethorphan card: Used for — Temporary relief of cough and upper-respiratory symptoms associated with allergy or the common cold · Common side effects — Drowsiness; Blurred vision; Dry mouth · Warnings — Contraindicated with MAOIs (dextromethorphan); Contraindicated in comatose states; Not for lower respiratory symptoms incl. asthma

Brompheniramine / Pseudoephedrine / Dextromethorphan

Same body system: Respiratory

Mechanism: Brompheniramine: alkylamine H1 blocker with anticholinergic effects. Pseudoephedrine: alpha-adrenergic nasal decongestant. Dextromethorphan: raises the cough threshold.

On both cards: Common side effects — Sedation; Dizziness

Only on the Brompheniramine / Pseudoephedrine / Dextromethorphan card: Used for — Relief of cough and upper-respiratory symptoms, including nasal congestion, associated with allergy or the common cold · Common side effects — Dry mouth, nose and throat; Thickened bronchial secretions · Warnings — Contraindicated with MAOIs (dextromethorphan); Severe hypertension or severe coronary artery disease; Not for newborns, premature infants, nursing mothers

An item counts as shared only when both cards use the same wording. If a card does not list an item, that is not a statement that the effect never occurs.