Guidelines for ATC classification and DDD assignment - WHOCC

R03DA Xanthines
A number of preparations containing e.g. theophylline are classified in
this group even if they do not have asthma as an indication.
Combinations of xanthines and other agents (except adrenergics, see
R03DB - Xanthines and adrenergics) are classified at separate 5th levels
using the corresponding 50-series (e.g. mucolytics).
R03DB Xanthines and adrenergics
All combinations of xanthines and adrenergics are classified in this
group.
R03DC Leukotriene receptor antagonists
R03DX Other systemic drugs for obstructive airway diseases
This group comprises preparations, which cannot be classified in the
preceding groups.
R05 COUGH AND COLD PREPARATIONS
This group comprises a large number of preparations, most of which are
combined preparations.
Cold preparations containing therapeutic levels of antiinfectives should
be classified in ATC group J - Antiinfectives for systemic use.
Cold preparations with therapeutic levels of analgesics/antiinflammatory
agents should be classified in the respective N02/M01
groups, at separate 5th levels by using the 50-series.
Cold preparations with both antiinfectives and analgesics should be
classified in ATC group J - Antiinfectives for systemic use.
Cold preparations with minimal amounts of antiinfectives or analgesics
are classified in R05X - Other cold combination preparations.
See also R01 - Nasal preparations, R02 - Throat preparations, and
R03D - Other systemic drugs for obstructive airway diseases.
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