A method of enhancing the antitussive effectiveness of dextromethorphan by administering to a patient an antitussive-effective amount of dextromethorphan with an antitussive potentiating amount of acetaminophen and improved antitussive pharmaceutical compositions consisting of the combination of dextromethorphan and acetaminophen.
Potentiation of the antitussive effect of dextromethorphan with acetaminophen (paracetamol).