title: THE EVOLUTION OF A NEW ANALGESIC THROUGH CLINICAL STUDIES: A COMPARATIVE CLINICAL INVESTIGATION.
mesh_terms: D000700:Analgesics; D018712:Analgesics, Non-Narcotic; D058633:Antipyretics; D001241:Aspirin; D035843:Biomedical Research; D002110:Caffeine; D003061:Codeine; D009966:Orphenadrine; D010600:Pharmacology; D010615:Phenacetin; D010919:Placebos; D014116:Toxicology
chemical_list: D000700:Analgesics; D018712:Analgesics, Non-Narcotic; D058633:Antipyretics; D010919:Placebos; D002110:Caffeine; D009966:Orphenadrine; D010615:Phenacetin; D001241:Aspirin; D003061:Codeine
keywords: ANALGESICS AND ANTIPYRETICS; ASPIRIN; CAFFEINE; CLINICAL RESEARCH; CODEINE; ORPHENADRINE; PHARMACOLOGY; PHENACETIN; PLACEBOS; TOXICOLOGIC REPORT