QN NERVOUS SYSTEM
QN02 ANALGESICS
QN02A OPIOIDS
QN02AF Morphinan derivatives
QN02AF01 butorphanol
Last updated: 2026-02-12
Postal address:
Norwegian Institute of Public Health
WHO Collaborating Centre for Drug Statistics Methodology
Postboks 222 Skøyen
0213 Oslo
Norway
Visiting/delivery address:
Myrens verksted 6H
0473 Oslo
Norway
Tel: +47 21 07 81 60
E-mail:
Copyright/Disclaimer
Norwegian Institute of Public Health
WHO Collaborating Centre for Drug Statistics Methodology
Postboks 222 Skøyen
0213 Oslo
Norway
Visiting/delivery address:
Myrens verksted 6H
0473 Oslo
Norway
Tel: +47 21 07 81 60
E-mail:
Copyright/Disclaimer