Acute Bronchitis Management

Introduction to Dextromethorphan

Dextromethorphan provides only modest symptomatic relief for dry, bothersome cough in acute bronchitis and should be used selectively for short-term symptomatic relief when cough significantly impacts sleep or quality of life 1
According to European Respiratory Society guidelines, dextromethorphan has shown some effect in patients with acute cough, while studies on codeine in the same patient population failed to show beneficial effects 1
The American College of Chest Physicians (ACCP) guidelines note that dextromethorphan has not been systematically studied in double-blind, placebo-controlled studies specifically for acute bronchitis 2

Dextromethorphan is indicated for use only for dry, bothersome cough that disrupts sleep or significantly impacts quality of life 1
Dextromethorphan is contraindicated in productive cough as suppression is not logical when the patient coughs up relevant quantities of sputum 1

The American College of Chest Physicians (ACCP) recommends antitussive agents only occasionally for short-term symptomatic relief of coughing in acute bronchitis (Grade C recommendation - fair evidence, small/weak benefit) 2
Dextromethorphan should not be used routinely for all cases of acute bronchitis 2, 1
The benefit of dextromethorphan appears to be modest and primarily related to symptom control rather than affecting the underlying disease process 2
Other over-the-counter medications like expectorants, mucolytics, and antihistamines lack consistent evidence for beneficial effects in acute bronchitis and are not recommended 1

Most cases of acute bronchitis are self-limiting and will resolve within 1-3 weeks without specific treatment 1
β-agonist bronchodilators should not be routinely used to alleviate cough in most patients with acute bronchitis (Grade D recommendation) 2
However, in select adult patients with wheezing accompanying the cough, treatment with β-agonist bronchodilators may be useful (Grade C recommendation) 2
Antibiotics are not justified for routine treatment of acute bronchitis unless there is suspected or confirmed pertussis infection 2