Em-Eukal Forte N - Pharmacological action Dextromethorphan is an antitussive medication. Inhibiting the excitability of the cough center this medicine suppresses the cough of any origin. Dextromethorphan has not addiction effects and it has no analgesic and hypnotic action. Dextromethorphan starts to act after 10-30 minutes after oral administration, the duration of therapeutic action: 5-6 hours for adults and 6-9 hours for children. Dextromethorphan is an optical isomer of levomethorphan which is similar to...