| | N01AH51 - Fentanyl, Combinations | ATC-DDD Version 2016. Source: WHO |  | |  |  | | N01 - Anesthetics |  |  |  | No DDDs have been established in this group because the doses used vary substantially.
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 |  | | N01A - Anesthetics, General |  | This group comprises agents which produce general anesthesia, surgical analgesia or neuroleptanalgesia. See also M03A - Peripherally acting muscle relaxants.Benzodiazepine derivatives are classified in N05BA or N05CD.
 
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 |  | | N01AH - Opioid Anesthetics |  | Opioid anesthetics in combination with other anesthetics are classified in this group at separate 5th levels using the corresponding 50-series.Transdermal, nasal and sublingual formulations of fentanyl are classified in N02AB.
 Fentanyl in combination with bupivacaine for e.g. postoperative pain is classified in N01AH51 - fentanyl, combinations.
 
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 |  | | N01AH51 - Fentanyl, Combinations | 
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