Guidelines for ATC classification and DDD assignment - WHOCC

R05D COUGH SUPPRESSANTS, EXCL. COMBINATIONS WITH
EXPECTORANTS
Combined preparations are classified at separate 5th levels using the
code number 20 (R05DA20 and R05DB20). These may also contain
bronchodilating agents, antihistamines etc.
Combinations with expectorants, see R05F.
Combinations with xanthines, see R03DA.
Preparations, which contain small amounts of herbal extracts, menthol
etc., are not regarded as combined preparations.
R05DA Opium alkaloids and derivatives
Plain codeine, also when used as an analgesic, is classified in this group.
All combined products of opium alkaloids and derivatives, are classified
in R05DA20.
All dihydrocodeine products, also when used as cough suppressants, are
classified in N02AA.
R05DB Other cough suppressants
All combined products of other cough suppressants are classified in
R05DB20.
Levocloperastine is classified together with cloperastine in R05DB21.
R05F COUGH SUPPRESSANTS AND EXPECTORANTS,
COMBINATIONS
In addition to cough suppressants and expectorants, the preparations
may contain bronchodilating agents, antihistamines etc. Combinations,
which contain respiratory stimulants, e.g. theophylline, should be
classified in R03DA.
R05FA Opium derivatives and expectorants
R05FB Other cough suppressants and expectorants
243