Guidelines for ATC classification and DDD assignment - WHOCC

R RESPIRATORY SYSTEM
234
Inhaled antiinfectives are classified in ATC group J - Antiinfectives for
systemic use.
R01 NASAL PREPARATIONS
R01A DECONGESTANTS AND OTHER NASAL PREPARATIONS FOR
TOPICAL USE
This group comprises preparations for local treatment in nasal
congestion (e.g. sympathomimetics) or for prophylaxis and treatment of
allergic rhinitis (e.g. corticosteroids, cromoglicate preparations). Most
of the products are nasal drops, nasal sprays or nasal inhalants.
See also R01B - Nasal decongestants for systemic use, and R06 -
Antihistamines for systemic use.
The DDDs are based on treatment of both nostrils.
R01AA Sympathomimetics, plain
Small amounts of antiseptics etc. are allowed at each 5th level.
Combinations with antibiotics, antihistamines, ipatropium bromide etc.
are classified in R01AB, while combinations with corticosteroids are
classified in R01AD.
The DDDs are based on the treatment of acute rhinitis.
R01AB Sympathomimetics, combinations excl. corticosteroids
Combinations with e.g. antibiotics, antihistamines and ipatropium
bromide are classified in this group.
This group also includes preparations with two or more sympathomimetics.
These combinations are classified in a ranking according to
the ATC codes, e.g. substances classified in R01AB01 take precedence
over substances classified in R01AB02 etc.