Fentanyl

Fentanyl (JAN/USP/INN)  <JP/US>

Fentanyl citrate (JP18/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 (JP18)  <JP/US>

Morphine hydrochloride hydrate (JP18)  <JP>

Morphine tartrate

Hydromorphone

Hydromorphone (INN)

Hydromorphone hydrochloride (JAN/USP)  <JP/US>

Dihydrocodeine

Dihydrocodeine (INN)

Dihydrocodeine phosphate (JP18)  <JP>

Dihydrocodeine bitartrate (USP)

Dihydrocodeine thiocyanate

Oxymorphone

Oxymorphone (INN)

Oxymorphone hydrochloride (USP)  <US>

Pethidine

Pethidine (INN)

Meperidine hydrochloride (USP); Pethidine hydrochloride (JP18)  <JP/US>

Dextropropoxyphene

Dextropropoxyphene (INN)

Propoxyphene hydrochloride (USAN)  <US>

Propoxyphene napsylate (USAN)

Tilidine

Tilidine (INN)

Tilidine hydrochloride (USAN)

Tramadol

Tramadol (INN)

Tramadol hydrochloride (JP18/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

Diphenoxylate

Diphenoxylate (INN)

Diphenoxylate hydrochloride (USP)

Difenoxin

Difenoxin (USAN/INN)

Difenoxin hydrochloride

Ethylmorphine

Ethylmorphine (BAN)

Ethylmorphine hydrochloride hydrate (JP18)

Hydrocodone

Hydrocodone (INN)

Hydrocodone bitartrate (USP)  <US>

Hydrocodone polistirex (USAN)

Hydrocodone hydrochloride

Codeine

Codeine

Codeine (USP)

Codeine phosphate (USP); Codeine phosphate hydrate (JP18)  <JP>

Codeine polistirex (USAN)

Codeine sulfate (USP)  <US>

Codeine hydrochloride

O-Acetyldihydrocodeine hydrochloride

Levorphanol

Levorphanol (INN)

Levorphanol tartrate (USP)  <US>

Carfentanil

Carfentanil (INN)

Carfentanil citrate (USAN)

Brifentanil hydrochloride (USAN)

Lofentanil oxalate (USAN)

Methadyl acetate (USAN); Acetylmethadol (INN)

Mirfentanil hydrochloride (USAN)

Ocfentanil hydrochloride (USAN)

Trimeperidine (INN)

Alphacetylmethadol (INN)

Betacetylmethadol (INN)

Alphameprodine (INN)

Betameprodine (INN)

Clonitazene (INN)

Etonitazene (INN)

Alphamethadol (INN)

Betamethadol (INN)

Alphaprodine (INN)

Betaprodine (INN)

Etoxeridine (INN)

Hydroxypethidine (INN)

Furethidine (INN)

Piminodine (INN)

Benzethidine (INN)

Hydromorphinol (INN)

Levophenacylmorphan (INN)

Phenomorphan (INN)

Methyldihydromorphine (INN)

Metopon (BAN)

Methyldesorphine (INN)

Norlevorphanol (INN)

Phenampromide (INN)

Diampromide (INN)

Levomethorphan (INN)

Morpheridin (INN)

Properidine (INN)

Nalfurafine hydrochloride (JAN/USAN)  <JP>

Difelikefalin

Difelikefalin (USAN/INN)

Difelikefalin acetate (JAN)  <JP/US>

Eptazocine

Eptazocine (INN)

Eptazocine hydrobromide (JAN)

Ketazocine (USAN/INN)

Oxilorphan (USAN/INN)

Proxorphan tartrate (USAN)

Spiradoline mesylate (USAN)

Enadoline hydrochloride (USAN)

Oxycodone (USAN/INN)  <US>

Oxycodone hydrochloride (USP)  <US>

Compound oxycodone (JP18)

Oxycodone terephthalate (USP)

Oxycodone hydrochloride hydrate (JP18)  <JP>

Pentazocine (JP18/USP/INN)  <JP>

Pentazocine lactate (USP)

Pentazocine hydrochloride (JAN/USP)  <JP>

Butorphanol (USAN/INN)

Butorphanol tartrate (JAN/USP)  <US>

Nalbuphine (INN)

Nalbuphine hydrochloride (USAN)  <US>

Loperamide (INN)

Loperamide hydrochloride (JAN/USP)  <JP/US>

Loperamide oxide (INN)