[Qualitatively reliable study proves: in chronic bronchitis or COPD--standardized Myrtol].
D029481:Bronchitis, Chronic / Q000188:drug therapy*; D018450:Disease Progression; D004311:Double-Blind Method; D004338:Drug Combinations; D005100:Expectorants / Q000592:standards / Q000627:therapeutic use*; D006801:Humans; D039821:Monoterpenes / Q000592:standards / Q000627:therapeutic use*; D029424:Pulmonary Disease, Chronic Obstructive / Q000188:drug therapy*; D016032:Randomized Controlled Trials as Topic; D016896:Treatment Outcome
D004338:Drug Combinations; D005100:Expectorants; D039821:Monoterpenes; C055632:myrtol