AN ATTEMPT TO DEMONSTRATE CEILING EFFICACY  OF ANALGESICS IN RATS.
D000632:Aminopyrine; D000661:Amphetamine; D000662:Amphetamines; D000700:Analgesics; D001241:Aspirin; D001463:Barbiturates; D002707:Chlordiazepoxide; D002746:Chlorpromazine; D003061:Codeine; D011431:Dextropropoxyphene; D004155:Diphenhydramine; D008614:Meperidine; D008620:Meprobamate; D008691:Methadone; D009020:Morphine; D010600:Pharmacology; D010634:Phenobarbital; D051381:Rats; D012007:Rectum; D012106:Research; D014116:Toxicology
D000662:Amphetamines; D000700:Analgesics; D001463:Barbiturates; D000632:Aminopyrine; D002707:Chlordiazepoxide; D009020:Morphine; D004155:Diphenhydramine; D008614:Meperidine; D008620:Meprobamate; D000661:Amphetamine; D001241:Aspirin; D011431:Dextropropoxyphene; D002746:Chlorpromazine; D008691:Methadone; D003061:Codeine; D010634:Phenobarbital
AMINOPYRINE; AMPHETAMINE; ASPIRIN; BARBITURATES; CHLORDIAZEPOXIDE; CHLORPROMAZINE; CODEINE; DIPHENHYDRAMINE; EXPERIMENTAL LAB STUDY; MEPERIDINE; MEPROBAMATE; METHADONE; MORPHINE; PHARMACOLOGY; PHENOBARBITAL; PROPOXYPHENE; RATS; RECTUM; TOXICOLOGIC REPORT