| delta-Opioid receptor agonist |
| Metkephamid acetate (USAN) |
| Etorphine (INN) |
| kappa-Opioid receptor agonist |
| Pentazocine |
| Pentazocine (JP17/USP/INN) <JP> |
| Pentazocine lactate (USP) |
| Pentazocine hydrochloride (JAN/USP) <JP> |
| Butorphanol |
| Butorphanol (USAN/INN) |
| Butorphanol tartrate (JAN/USP) <US> |
| Nalbuphine |
| Nalbuphine (INN) |
| Nalbuphine hydrochloride (USAN) <US> |
| Diprenorphine |
| Diprenorphine (INN) |
| Diprenorphine hydrochloride |
| Eptazocine |
| Eptazocine (INN) |
| Eptazocine hydrobromide (JAN) <JP> |
| Cyclazocine (USAN/INN) |
| Ketazocine (USAN/INN) |
| Quadazocine mesylate (USAN) |
| Spiradoline mesylate (USAN) |
| Enadoline hydrochloride (USAN) |
| Nalfurafine hydrochloride (JAN/USAN) <JP> |
| Etorphine (INN) |
| mu-Opioid receptor agonist |
| Diphenoxylate |
| Diphenoxylate (INN) |
| Diphenoxylate hydrochloride (USP) |
| Loperamide |
| Loperamide (INN) |
| Loperamide hydrochloride (JAN/USP) <JP/US> |
| Loperamide oxide (INN) |
| Fentanyl |
| Fentanyl (JAN/USP/INN) <JP/US> |
| Fentanyl citrate (JP17/USP) <JP/US> |
| Fentanyl hydrochloride (JAN) |
| Alfentanil |
| Alfentanil (INN) |
| Alfentanil hydrochloride (USP) <US> |
| Sufentanil |
| Sufentanil (USAN/INN) |
| Sufentanil citrate (USP) <US> |
| Remifentanil |
| Remifentanil (INN) |
| Remifentanil hydrochloride (JAN/USAN) <JP/US> |
| Morphine |
| Morphine (BAN) |
| Morphine sulfate (USP); Morphine sulfate hydrate (JP17) <JP/US> |
| Morphine hydrochloride hydrate (JP17) <JP> |
| Morphine tartrate |
| Hydromorphone |
| Hydromorphone (INN) |
| Hydromorphone hydrochloride (JAN/USP) <JP/US> |
| Oxycodone |
| Oxycodone (USAN/INN) |
| Oxycodone hydrochloride (USP) <US> |
| Compound oxycodone (JP17) |
| Oxycodone terephthalate (USP) |
| Oxycodone hydrochloride hydrate (JP17) <JP> |
| Dihydrocodeine |
| Dihydrocodeine (INN) |
| Dihydrocodeine phosphate (JP17) <JP> |
| Dihydrocodeine bitartrate (USP) |
| Dihydrocodeine thiocyanate |
| Pethidine |
| Pethidine (INN) |
| Meperidine hydrochloride (USP); Pethidine hydrochloride (JP17) <JP/US> |
| Dextropropoxyphene |
| Dextropropoxyphene (INN) |
| Propoxyphene hydrochloride (USAN) <US> |
| Propoxyphene napsylate (USAN) |
| Tilidine |
| Tilidine (INN) |
| Tilidine hydrochloride (USAN) |
| Tramadol |
| Tramadol (INN) |
| Tramadol hydrochloride (JP17/USP) <JP/US> |
| Tapentadol |
| Tapentadol (USAN/INN) |
| Tapentadol hydrochloride (JAN) <JP/US> |
| Methadone |
| Methadone (BAN) |
| Methadone hydrochloride (JAN/USP) <JP/US> |
| Levacetylmethadol |
| Levomethadyl acetate (USAN); Levacetylmethadol (INN) |
| Levomethadyl acetate hydrochloride (USAN) |
| Levomethadone |
| Levomethadone (INN) |
| Levomethadone hydrochloride |
| Diamorphine |
| Diamorphine (BAN) |
| Diacetylmorphine hydrochloride |
| Ethylmorphine |
| Ethylmorphine (BAN) |
| Ethylmorphine hydrochloride hydrate (JP17) |
| Hydrocodone |
| Hydrocodone (INN) |
| Hydrocodone bitartrate (USP) <US> |
| Hydrocodone polistirex (USAN) |
| Hydrocodone hydrochloride |
| Codeine |
| Codeine |
| Codeine (USP) |
| Codeine phosphate (USP); Codeine phosphate hydrate (JP17) <JP> |
| Codeine polistirex (USAN) |
| Codeine sulfate (USP) <US> |
| Codeine hydrochloride |
| Carfentanil |
| Carfentanil (INN) |
| Carfentanil citrate (USAN) |
| Levorphanol |
| Levorphanol (INN) |
| Levorphanol tartrate (USP) <US> |
| Oxymorphone |
| Oxymorphone (INN) |
| Oxymorphone hydrochloride (USP) <US> |
| Brifentanil hydrochloride (USAN) |
| Difenoxin (USAN/INN) |
| Lofentanil oxalate (USAN) |
| Methadyl acetate (USAN); Acetylmethadol (INN) |
| Mirfentanil hydrochloride (USAN) |
| Ocfentanil hydrochloride (USAN) |
| Propoxyphene napsylate (USAN) |
| Trimeperidine (INN) |
| O-Acetyldihydrocodeine hydrochloride |
| Etorphine (INN) |
| Eluxadoline (USAN) <US> |
| Cebranopadol (USAN/INN) |
