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ATCDDD - Home
Postal address:
Norwegian Institute of Public Health
WHO Collaborating Centre for Drug Statistics Methodology
Postboks 222 Sk?yen
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 Sk?yen
0213 Oslo
Norway
Visiting/delivery address:
Myrens verksted 6H
0473 Oslo
Norway
Tel: +47 21 07 81 60
E-mail:
Copyright/Disclaimer
International language for drug utilization research
The Anatomical Therapeutic Chemical (ATC) classification system and the Defined Daily Dose (DDD) as a measuring unit have become the gold standard for international drug utilization monitoring and research.
The ATC/DDD system is a tool for exchanging and comparing data on drug use at international, national or local levels.
Welcome to the WHO Collaborating Centre for Drug Statistics Methodology
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Last updated: 2025-06-10


