Episode 987: Cough Suppressants

Cough suppressants frequently offer minimal efficacy, with common over-the-counter options like dextromethorphan and guaifenesin providing little benefit beyond simple oral rehydration. Prescription alternatives carry significant risks; codeine poses a danger of opioid toxicity due to variable metabolism rates, while benzonatate (Tessalon Perls) can cause fatal seizures or cardiac arrest in young children if accidentally ingested or chewed. For severe or chronic cases, nebulized lidocaine serves as a specialized intervention to numb the cough reflex, though it requires clinical monitoring for local anesthetic toxicity. Pediatric care should prioritize honey for children over age one or herbal remedies like thyme tea over unregulated naturopathic medicines. Persistent coughing lasting more than two weeks, especially when accompanied by post-tussive emesis, necessitates screening for pertussis, as Tdap immunity wanes over time and may require treatment with a macrolide antibiotic.