title: The antitussive and expectorant drug Duopect evaluated by the preferential test.
abstract: The effect of the preparation Duopect (narcotine hydrochloride + glyceryl guiacolate) on intensity and frequency of cough and expectoration was evaluated by the preferential test in 62 patients with chronic bronchitis. The preparation was compared to narcotine and to a placebo in a double-blind study. Duopect was found to be an effective antitussive and expectorant medicine with only minimal and transient side effects.
mesh_terms: D002986:Clinical Trials as Topic; D003371:Cough / Q000188:drug therapy; D004341:Drug Evaluation; D005100:Expectorants / Q000627:therapeutic use*; D006801:Humans; D009665:Noscapine / Q000627:therapeutic use
chemical_list: D005100:Expectorants; D009665:Noscapine