Piperidylthiambutene Pyrrolidinylthiambutene Thiambutene Phenalkoxams Dextropropoxyphene (propoxyphene) Dimenoxadol Dioxaphetyl butyrate Levopropoxyphene Norpropoxyphene Pyrroliphene Ampromides Diampromide Phenampromide Propiram Others Embutramide IC-26 Isoaminile Lefetamine R-4066 Anilidopiperidines 3-Allylfentanyl 3-Methylfentanyl 3-Methylthiofentanyl 4-Phenylfentanyl Alfentanil α-Methylacetylfentanyl α-Methylfentanyl α-Methylthiofentanyl Benzylfentanyl β-hydroxyfentanyl β-hydroxythiofentanyl β-Methylfentanyl Brifentanil Butyrfentanyl Carfentanil Fentanyl Lofentanil N-Methylcarfentanil Mirfentanil Ocfentanil Ohmefentanyl Parafluorofentanyl Phenaridine R-30490 Remifentanil Sufentanil Thenylfentanyl Thiofentanyl Trefentanil Oripavine derivatives 7-PET Acetorphine Alletorphine (N-allyl-noretorphine) BU-48 Buprenorphine Buprenorphine-3-glucuronide Cyprenorphine Dihydroetorphine Etorphine Homprenorphine 18,19-Dehydrobuprenorphine (HS-599) N-cyclopropylmethylnoretorphine Nepenthone Norbuprenorphine Norbuprenorphine-3-glucuronide Thevinone Thienorphine Phenazepanes Ethoheptazine Meptazinol Metheptazine Metethoheptazine Proheptazine Pirinitramides Bezitramide Piritramide Benzimidazoles Clonitazene Etonitazene Isotonitazene Metonitazene Indoles 18-Methoxycoronaridine 7-Acetoxymitragynine 7-Hydroxymitragynine ψ-Akuammigine Akuammidine Akuammine Coronaridine Eseroline Hodgkinsine Ibogaine Mitragynine Mitragynine pseudoindoxyl Noribogaine Pericine Pseudoakuammigine Beta-Amino Ketones 3-(dimethylamino)-2,2-dimethyl-1-phenylpropan-1-one Diphenylmethylpiperazines BW373U86 DPI-221 DPI-287 DPI-3290 SNC-80 AZD-2327 Opioid peptides Dynorphins Big dynorphin Dynorphin A Dynorphin B Leumorphin Endomorphins Endomorphin-1 Endomorphin-2 Endorphins α-Endorphin β-Endorphin γ-Endorphin α-Neoendorphin β-Neoendorphin Enkephalins DADLE DAMGO Deltorphin Met-enkephalin Leu-enkephalin Propeptides Proenkephalin Proendorphin Proopiomelanocortin Others / unknown Adrenorphin Amidorphin Biphalin Casokefamide Casomorphins Cytochrophin-4 DALDA (Tyr-D-Arg-Phe-Lys-NH2) Deltorphin I Deltorphin II Deprolorphin Dermorphin DPDPE Frakefamide Gliadorphin Gluten exorphins Hemorphin-4 Metkefamide Morphiceptin Nociceptin Octreotide Opiorphin Rubiscolin Soymorphins Spinorphin TRIMU 5 Tynorphin Valorphin Zyklophin Others 3-(3-Methoxyphenyl)-3-ethoxycarbonyltropane AD-1211 AH-7921 Axomadol Azaprocin BDPC Bisnortilidine BRL-52537 Bromadol Bromadoline Ciprefadol Ciramadol Doxpicomine Enadoline Faxeladol GR-89696 Herkinorin ICI-199,441 ICI-204,448 Ketamine KNT-42 LPK-26 Lufuradom Metofoline MT-45 Desmethylclozapine Nexeridine NNC 63-0532 Nortilidine O-Desmethyltramadol Phenadone Phencyclidine Prodilidine Profadol Ro64-6198 Salvinorin A Salvinorin B ethoxymethyl ether Salvinorin B methoxymethyl ether SB-612,111 SC-17599 RWJ-394,674 TAN-67 Tapentadol Thiobromadol (C-8813) Tifluadom Tilidine Tramadol Trimebutine U-47700 U-50,488 U-69,593 Viminol 1-(4-Nitrophenylethyl)piperidylidene-2-(4-chlorophenyl)sulfonamide (W-18) Opioid antagonists and inverse agonists 4-Caffeoyl-1,5-quinide 5'-Guanidinonaltrindole β-Funaltrexamine 6β-Naltrexol 6β-Naltrexol-d4 Alvimopan AT-076 Binaltorphimine BU09059 Buprenorphine Chlornaltrexamine Clocinnamox Cyclazocine Cyprodime Diacetylnalorphine Diprenorphine (M5050) Fedotozine ICI-174864 J-113,397 JDTic JTC-801 Levallorphan LY-2456302 LY-255582 Methocinnamox Methylnaltrexone ML350 Naldemedine Nalfurafine Nalmefene Nalmexone Nalodeine (N-allylnorcodeine) Naloxazone Naloxegol Naloxol Naloxonazine Naloxone Naloxone benzoylhydrazone Nalorphine Naltrexone Naltriben Naltrindole Norbinaltorphimine Oxilorphan PF-4455242 S-allyl-3-hydroxy-17-thioniamorphinan (SAHTM) Samidorphan SR-16430 Biased ligands 6'-Guanidinonaltrindole 7-Hydroxymitragynine Herkinorin ICI-199,441 Noribogaine Oliceridine RB-64 TRV734 Receptor heteromer targeting ligands 6'-GNTI (δ-κ) CYM-51010 (δ-μ) NNTA (κ-μ) IBNtxA (μ1G-NOP) Uncategorized opioids ADL-5859 Alimadol Amentoflavone Anilopam +HCl Asimadoline Cyproterone acetate FE 200665 Fedotozine HZ-2 Kolokol-1 Matrine MCOPPB Menthol MT-7716 Nalfurafine Nalorphine Nalorphine dinicotinate PZM21 Proglumide Ro65-6570 SoRI-9409 Spiradoline SR-8993 SR-16435 Combination drug formulations containing opioids Buprenorphine/naloxone Buprenorphine/samidorphan (ALKS-5461) Co-codamol (codeine phosphate/paracetamol) Co-codaprin (codeine phosphate/aspirin) Co-dydramol (dihydrocodeine tartrate/paracetamol) Co-proxamol (dextropropoxyphene/paracetamol) Fentanyl/fluanisone Hydrocodone/ibuprofen Hydrocodone/paracetamol Loperamide/simethicone Morphine/naltrexone Naltrexone/bupropion Oxycodone/aspirin Oxycodone/naloxone Oxycodone/paracetamol See also List of opioids by visual 2D molecular skeletal renderings (bundled remotely, click "show" after following link) List of