| DB00193 | unknown | agonist | Tramadol | approved|investigational | DB00295 | yes | agonist | Morphine | approved|investigational | DB00318 | yes | partial agonist | Codeine | approved|illicit | DB00321 | unknown | agonist | Amitriptyline | approved | DB00327 | yes | agonist | Hydromorphone | approved|illicit | DB00370 | unknown | agonist | Mirtazapine | approved | DB00396 | unknown | activator | Progesterone | approved|vet_approved | DB00454 | yes | antagonist | Pethidine | approved | DB00497 | yes | agonist | Oxycodone | approved|illicit|investigational | DB00514 | unknown | agonist | Dextromethorphan | approved | DB00611 | yes | agonist | Butorphanol | approved|illicit|vet_approved | DB00647 | yes | antagonist | Dextropropoxyphene | approved|illicit|withdrawn | DB00652 | yes | agonist | Pentazocine | approved|vet_approved | DB00704 | yes | antagonist | Naltrexone | approved|investigational|vet_approved | DB00708 | unknown | other | Sufentanil | approved|investigational | DB00813 | unknown | agonist | Fentanyl | approved|illicit|investigational|vet_approved | DB00825 | unknown | agonist | Menthol | approved | DB00836 | yes | agonist | Loperamide | approved | DB00844 | yes | agonist | Nalbuphine | approved | DB00854 | unknown | agonist | Levorphanol | approved | DB00899 | unknown | agonist | Remifentanil | approved | DB00921 | yes | antagonist | Buprenorphine | approved|illicit|investigational|vet_approved | DB01183 | yes | antagonist | Naloxone | approved|vet_approved | DB01209 | yes | antagonist | Dezocine | approved | DB01221 | unknown | agonist | Ketamine | approved|vet_approved | DB01439 | yes | agonist | 3-Methylthiofentanyl | experimental|illicit | DB01452 | unknown | agonist | Heroin | approved|illicit | DB01497 | yes | agonist | Etorphine | illicit|vet_approved | DB01535 | unknown | agonist | Carfentanil | illicit|vet_approved | DB01548 | unknown | antagonist | Diprenorphine | illicit|vet_approved | DB01565 | unknown | agonist | Dihydromorphine | experimental|illicit | DB01571 | yes | agonist | 3-Methylfentanyl | illicit | DB05046 | unknown | NA | V1003 | investigational | DB05104 | unknown | NA | Asimadoline | investigational | DB05155 | unknown | NA | CR665 | investigational | DB05443 | unknown | NA | ADL 10-0101 | investigational | DB06148 | unknown | agonist | Mianserin | approved | DB06204 | unknown | inhibitor | Tapentadol | approved | DB06274 | unknown | antagonist | Alvimopan | approved | DB06738 | yes | agonist | Ketobemidone | approved | DB06800 | no | antagonist | Methylnaltrexone | approved | DB09272 | yes | agonist | Eluxadoline | approved | DB09396 | yes | agonist | Propoxyphene napsylate | approved |