the possible antitussive effects of dextrorphan ( the ( + ) isomer of levorphanol ) and phencyclidine ( pcp ) were compared to well known antitussive properties of dextromethorphan in the post-halothane anesthetized decerebrate cat in which cough was elicited by direct electrical stimulation of the cough center .
C0011816
dextromethorphan
C0010200
cough