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Anatomical Therapeutic Chemical (ATC) classification [BR:br08303]
  N NERVOUS SYSTEM
    N02 ANALGESICS
      N02A OPIOIDS
        N02AB Phenylpiperidine derivatives
          N02AB52 Pethidine, combinations excl. psycholeptics
            D03855  Pethidine hydrochloride and levallorphan tartrate <JP>

Therapeutic category of drugs in Japan [BR:br08301]
  8  Narcotics
    82  Non-alkaloidal narcotics
      821  Synthetic narcotics
        8219  Others
          D03855  Pethidine hydrochloride and levallorphan tartrate

Drug groups [BR:br08330]
  Analgesic
    DG01984  Opioid analgesics
      D03855  Pethidine hydrochloride and levallorphan tartrate