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“At low phencyclidine concentrations the ethanol solution was preferred, but phencyclidine deliveries exceeded ethanol deliveries at higher phencyclidine concentrations.”
“The competitive NMDA antagonist CPPene (D-3-(2-carboxypiperazine-4-yl)-1-propenyl-1-phosphonic acid [SDZ EAA 494]) and the noncompetitive NMDA antagonist phencyclidine decreased both ethanol and saccharin self-administration.”
Canadian journal of physiology and pharmacology • 1990 | View Paper
“Isobolograms (plots of equieffective dose combinations) of these LD50s and ED50s showed that low doses of ethanol reduced the LD50 of phencyclidine (PCP) by about 20%, while higher doses (1-3 g/kg) of ethanol were without further effect.”
“ Phencyclidine and dizocilpine produced dose-related substitution for ethanol as did the competitive NMDA antagonist, CGS 19755, and the benzodiazepines, triazolam and chlordiazepoxide.”