R05DCough Suppressants, Excl. Combinations With Expectorants↑ R05SubgroupsOpium alkaloids and derivativesR05DAOther cough suppressantsR05DBSubstancesdextromethorphanR05DA09benzonatateR05DB01codeineR05DA04butamirateR05DB13chlophedianolR05DB10benproperineR05DB02ethylmorphineR05DA01hydrocodoneR05DA03noscapineR05DA07oxeladinR05DB09