Additive and augmentative synergism between analgesic drugs.
D000082:Acetaminophen / Q000494:pharmacology*; D000700:Analgesics / Q000494:pharmacology*; D000818:Animals; D001241:Aspirin / Q000494:pharmacology*; D002110:Caffeine / Q000494:pharmacology*; D003061:Codeine / Q000494:pharmacology*; D011431:Dextropropoxyphene / Q000494:pharmacology*; D004357:Drug Synergism; D006919:Hydroxyzine / Q000494:pharmacology*; D008620:Meprobamate / Q000494:pharmacology*; D051379:Mice; D010615:Phenacetin / Q000494:pharmacology*
D000700:Analgesics; D006919:Hydroxyzine; D000082:Acetaminophen; D002110:Caffeine; D008620:Meprobamate; D010615:Phenacetin; D001241:Aspirin; D011431:Dextropropoxyphene; D003061:Codeine