| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Levomethadyl | Is a | True | Opioid receptor agonist | Inferred relationship | Some |  | 
| Dihydrocodeine bitartrate | Is a | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Long acting metabolite of methadone | Is a | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| 6-O-monoacetylmorphine | Is a | True | Opioid receptor agonist | Inferred relationship | Some |  | 
| Codeine sulfate | Is a | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Opium | Is a | True | Opioid receptor agonist | Inferred relationship | Some |  | 
| Oxymorphone | Is a | True | Opioid receptor agonist | Inferred relationship | Some |  | 
| Codeine phosphate | Is a | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Pethidine hydrochloride | Is a | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| difenylheptanderivat | Is a | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Hydromorphone | Is a | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Phenylpiperidine derivative | Is a | True | Opioid receptor agonist | Inferred relationship | Some |  | 
| Sufentanil | Is a | True | Opioid receptor agonist | Inferred relationship | Some |  | 
| betaendorfinpreparat | Is a | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Alphaprodine | Is a | True | Opioid receptor agonist | Inferred relationship | Some |  | 
| folkolin | Is a | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Oxycodone | Is a | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Anileridine | Is a | True | Opioid receptor agonist | Inferred relationship | Some |  | 
| Dextropropoxyphene hydrochloride | Is a | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Levorphanol tartrate | Is a | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Dextropropoxyphene napsylate | Is a | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Piminodine | Is a | True | Opioid receptor agonist | Inferred relationship | Some |  | 
| Metazocine | Is a | True | Opioid receptor agonist | Inferred relationship | Some |  | 
| Thebaine | Is a | True | Opioid receptor agonist | Inferred relationship | Some |  | 
| Etazocine | Is a | True | Opioid receptor agonist | Inferred relationship | Some |  | 
| Normeperidine | Is a | True | Opioid receptor agonist | Inferred relationship | Some |  | 
| Trimeperidine | Is a | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Norpropoxyphene | Is a | True | Opioid receptor agonist | Inferred relationship | Some |  | 
| Carfentanil citrate | Is a | True | Opioid receptor agonist | Inferred relationship | Some |  | 
| Etorphine | Is a | True | Opioid receptor agonist | Inferred relationship | Some |  | 
| Ketobemidone | Is a | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Dextromoramide tartrate | Is a | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Dihydrocodeine tartrate | Is a | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Hydrocodone (substance) | Is a | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Tilidine (substance) | Is a | True | Opioid receptor agonist | Inferred relationship | Some |  | 
| Morphinan opioid | Is a | True | Opioid receptor agonist | Inferred relationship | Some |  | 
| Pethidine analog (substance) | Is a | True | Opioid receptor agonist | Inferred relationship | Some |  | 
| Phenanthrene derivative (substance) | Is a | True | Opioid receptor agonist | Inferred relationship | Some |  | 
| Opioid receptor partial agonist | Is a | True | Opioid receptor agonist | Inferred relationship | Some |  | 
| Remifentanil (substance) | Is a | True | Opioid receptor agonist | Inferred relationship | Some |  | 
| Dipipanone (substance) | Is a | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Methadone (substance) | Is a | True | Opioid receptor agonist | Inferred relationship | Some |  | 
| Alfentanil (substance) | Is a | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Meptazinol (substance) | Is a | True | Opioid receptor agonist | Inferred relationship | Some |  | 
| Opium alkaloid (substance) | Is a | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Squill opiate (substance) | Is a | True | Opioid receptor agonist | Inferred relationship | Some |  | 
| Qualitative measurement of opiate agonist | Component | True | Opioid receptor agonist | Inferred relationship | Some | 1 | 
| förgiftning orsakad av opiatanalgetikum | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some | 1 | 
| Narcotic poisoning | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Overdose of opiate | Causative agent | True | Opioid receptor agonist | Inferred relationship | Some | 1 | 
| avsiktlig och planerad överdos av analgetikum av opiattyp | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some | 1 | 
| Product containing dextropropoxyphene (medicinal product) | Has active ingredient | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Phenazocine poisoning | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Accidental phenazocine poisoning | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Intentional phenazocine poisoning | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| fenazocinförgiftning, med oklar avsikt | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Methadone analog poisoning | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Dextromoramide poisoning | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Accidental dextromoramide poisoning | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Intentional dextromoramide poisoning | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| förgiftning orsakad av dextromoramid, med oklar avsikt | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Dextropropoxyphene poisoning | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Accidental dextropropoxyphene poisoning | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Intentional dextropropoxyphene poisoning | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| dextropropoxifenförgiftning, med oklar avsikt | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| oavsiktlig narkotikaförgiftning | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| avsiktlig förgiftning orsakad av narkotika | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| förgiftning orsakad av narkotika | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Opioid analgesic adverse reaction | Causative agent | True | Opioid receptor agonist | Inferred relationship | Some | 1 | 
| Phenazocine adverse reaction | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Methadone analog adverse reaction | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Dextromoramide adverse reaction | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Dextropropoxyphene adverse reaction | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| allergi mot opioida smärtstillande medel | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Allergy to phenazocine (finding) | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Allergy to methadone analogue | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Allergy to dextromoramide | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Allergy to propoxyphene | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Phenazocine overdose | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Accidental phenazocine overdose | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Intentional phenazocine overdose | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| överdos av fenazocin, med oklar avsikt | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Methadone analog overdose | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Dextromoramide overdose | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Accidental dextromoramide overdose | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Intentional dextromoramide overdose | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| överdos av dextromoramid, med oklar avsikt | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Dextropropoxyphene overdose | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Accidental dextropropoxyphene overdose | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Intentional dextropropoxyphene overdose | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| överdos av dextropropoxifen, med oklar avsikt | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| överdos av analgetikum av opiattyp, med oklar avsikt | Causative agent | False | Opioid receptor agonist | Inferred relationship | Some | 1 | 
| Narcotic identification (procedure) | Component | True | Opioid receptor agonist | Inferred relationship | Some | 1 | 
| Accidental overdose of opiate | Causative agent | True | Opioid receptor agonist | Inferred relationship | Some | 1 | 
| Dextromoramide 5 mg oral tablet | Has active ingredient | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Dextromoramide 10 mg oral tablet | Has active ingredient | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| Product containing precisely dextropropoxyphene hydrochloride 65 milligram/1 each conventional release oral capsule (clinical drug) | Has active ingredient | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| dihydrokodeintartrat 30 mg, tablett | Has active ingredient | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| dihydrokodeintartrat 10 mg/5 ml, elixir | Has active ingredient | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| dihydrokodeintartrat 50 mg/ml, injektionsvätska, lösning, ampull 1 ml | Has active ingredient | False | Opioid receptor agonist | Inferred relationship | Some |  | 
| dihydrokodeintartrat 60 mg, tablett med modifierad frisättning | Has active ingredient | False | Opioid receptor agonist | Inferred relationship | Some |  |