Drug Gene Type Source hydromorphone OPRM1 Ki=0.00028(uM) D1 PubChem hydromorphone OPRM1 EC50=0.0026(uM) D1 PubChem hydromorphone OPRK1 Ki=0.0028(uM) D1 PubChem hydromorphone OPRK1 EC50=0.011(uM) D1 PubChem hydromorphone OPRD1 Ki=0.038(uM) D1 PubChem