TABLE 373-1 - Actions of Opioid Receptors
| Receptor Type | |
| Actions | |
| Mu () (e.g., morphine) | Analgesia, reinforcement euphoria, cough and appetite suppression, decreased respirations, decreased GI motility, sedation, hormone changes, dopamine and acetylcholine release |
| Kappa () (e.g., butorphanol) | Decreased dysphoria, decreased GI motility, decreased appetite, decreased respiration, psychotic symptoms, sedation, diuresis, analgesia |
| Delta () (e.g., etorphine) | Hormone changes, appetite suppression, dopamine release |
Note: GI, gastrointestinal.