Potentiation of the analgesic effect of codeine in rats by d-amphetamine.
D000818:Animals; D003061:Codeine / Q000494:pharmacology*; D003913:Dextroamphetamine / Q000494:pharmacology*; D004357:Drug Synergism; D051381:Rats
D003913:Dextroamphetamine; D003061:Codeine