Compound |
Receptor types |
||
m | k | s | |
Morphine | Ag | Ag | -- |
Naloxone | Ant | Ant | mixed |
Pentazocine | Ant | Ag | Ag |
Butorphanol | -- | Ag | Ag |
Nalbuphine | Ant | pAg | mixed |
Nalorphine | Ant | pAg | mixed |
Buprenorphine | pAg | ? | -- |
Ag = agonist; Ant = antagonist; pAg = partial agonist: -- = nosignificant action.