title: The effect on vigilance of an analgesic combination (Ataralgin) and its components, guaiphenesine and caffeine.
mesh_terms: D000328:Adult; D000700:Analgesics / Q000494:pharmacology*; D001143:Arousal / Q000187:drug effects*; D002110:Caffeine / Q000494:pharmacology*; D004338:Drug Combinations; D006140:Guaifenesin / Q000494:pharmacology*; D006801:Humans; D008297:Male
chemical_list: D000700:Analgesics; D004338:Drug Combinations; D002110:Caffeine; D006140:Guaifenesin