Resist Temptation to Recommend OTC Dextromethorphan or Guaifenesin for Cough
Shortages of Rx cough meds (Tessalon, Tussionex, etc) mean more questions about treating coughs in adults due to respiratory infections.
It's tempting to recommend an OTC product with dextromethorphan and/or guaifenesin. But there's not much evidence they work.
Instead, advise adults to try an oral decongestant and FIRST-generation antihistamine (brompheniramine, etc). These help reduce the postnasal drip that can trigger coughs.