Interaction between Mu and Delta Opioid Receptor Agonists in an Assay of Capsaicin-Induced Thermal Allodynia in Rhesus Monkeys
Table 1
ED50 values (95% confidence limits) in mg/kg for the antiallodynic effects of methadone, morphine, and nalbuphine administered alone or in combination with other drugs. Symbols indicate significantly different from mu agonist alone (*) or from 0.9 : 1 SNC80/methadone alone (†) as indicated by nonoverlapping confidence limits.