List of investigational analgesics Enkephalinase Heroin-assisted treatment Gluten exorphin B&O Supprettes Dover's powder Exorphin Black tar heroin Opioid excess theory Hemorphin Opioid rotation Opioid-induced hyperalgesia Protocol for Limiting and Regulating the Cultivation of the Poppy Plant, the Production of, International and Wholesale Trade in, and Use of Opium SoRI-9409 Aknadinine Opioid modulator DPI-287 Homebake (slang) Opioid food peptides Dynorphin Tetramethylcyclopropylfentanyl Methadone clinic Theriac Bentley compounds Kendal Black Drop Nufenoxole 4-Phenylfentanyl Propylketobemidone Fentanyl carbamate Parafluorofuranylfentanyl Fentanyl…

l tropane Cheese (recreational drug) Pantopon Rubiscolin Casomorphin Mithridate Neoendorphin Dynorphin A Metofoline Fedotozine Pheneridine Thiorphan Pyrrolidinylthiambutene Allylnorpethidine Norlevorphanol CVL-354 Erinacine RB-120 Thiafentanil Metethoheptazine Benzoylfentanyl 2,2'-Difluorofentanyl Betahydroxythiofentanyl Metheptazine Loperamide/simethicone Low-dose naltrexone Codoxime LY-88329 Methoxyacetylfentanyl Ro4-1539 Prodilidine Etomethazene 3,4-MDO-U-47700 Gemazocine N-Desethyletonitazene Kelatorphan LS-115509 PF-4455242 Polish heroin Paregoric DPI-221 3-Allylfentanyl Big dynorphin Diasco

rdium Poppy straw Madak Dipyanone Acetyldihydrocodeine Nicodicodine 14-Phenylpropoxymetopon Desmethylmoramide Phenampromide Azaprocin M320 (opioid) Dipropanoylmorphine Methocinnamox Apparicine Morphine-N-oxide Sameridine Proxorphan 4-Bromofentanyl 8-Carboxamidocyclazocine N-Phenethylnormorphine Picenadol Secbutonitazene Naloxazone Opioid peptide 6-Monoacetylmorphine Diampromide Furethidine AH-7921 Hemorphin-4 RB-101 Hydromorphinol Morphine-6-glucuronide Mirfentanil 18,19-Dehydrobuprenorphine Proglumide Peripherally acting μ-opioid receptor antagonist Phenaridine N,O-Didesmethyltramadol IC-26 Ketorfanol Etonitazene 5-cyano analogue Oxymorphazone Valerylfentanyl BRL-52537 4-Fluoroisob