atc code r05 atc code r05 atc code r05 cough and cold preparations is a therapeutic subgroup of the anatomical therapeutic chemical classification system, a system of alphanumeric codes developed by the world health organization (who) for the classification of drugs and other medical products. subgroup r05 is part of the anatomical group r respiratory system. atc codes r respiratory system r01 nasal preparations r02 throat preparations r03 drugs for obstructive airway diseases r05 cough and cold preparations r06 antihistamines for systemic use r07 other respiratory system products a b c d g h qi j l m n p r s v codes for veterinary use (atcvet codes) can be created by placing the letter q in front of the human atc code: for example, qr05. atcvet codes without corresponding human atc codes are cited with the leading q in the following list.national issues of the atc classification may include additional codes not present in this list, which follows the who version. r05c expectorants, excluding combinations with cough suppressants r05ca expectorants r05ca01 tyloxapol r05ca02 potassium iodide r05ca03 guaifenesin r05ca04 ipecacuanha r05ca05 altheae radix r05ca06 senega r05ca07 antimony pentasulfide r05ca08 creosote r05ca09 guaiacolsulfonate r05ca10 combinations r05ca11 levoverbenone r05ca12 hederae helicis folium r05ca13 cineole r05cb mucolytics r05cb01 acetylcysteine r05cb02 bromhexine r05cb03 carbocisteine r05cb04 eprazinone r05cb05 mesna r05cb06 ambroxol r05cb07 sobrerol r05cb08 domiodol r05cb09 letosteine r05cb10 combinations r05cb11 stepronin r05cb13 dornase alfa (desoxyribonuclease) r05cb14 neltenexine r05cb15 erdosteine r05cb16 mannitol qr05cb90 dembrexine hydrochloride r05d cough suppressants, excluding combinations with expectorants r05da opium alkaloids and derivatives r05da01 ethylmorphine r05da03 hydrocodone r05da04 codeine r05da05 opium alkaloids with morphine r05da06 normethadone r05da07 noscapine r05da08 pholcodine r05da09 dextromethorphan r05da10 thebacon r05da11 dimemorfan r05da12 acetyldihydrocodeine r05da20 combinations (qr05da20 combinations of opium alkaloids and derivatives) qr05da90 butorphanol r05db other cough suppressants r05db01 benzonatate r05db02 benproperine r05db03 clobutinol r05db04 isoaminile r05db05 pentoxyverine r05db07 oxolamine r05db09 oxeladin r05db10 clofedanol r05db11 pipazetate r05db12 bibenzonium bromide r05db13 butamirate r05db14 fedrilate r05db15 zipeprol r05db16 dibunate r05db17 droxypropine r05db18 prenoxdiazine r05db19 dropropizine r05db20 combinations r05db21 cloperastine r05db22 meprotixol r05db23 piperidione r05db24 tipepidine r05db25 morclofone r05db26 nepinalone r05db27 levodropropizine r05db28 dimethoxanate r05db29 gefapixant r05f cough suppressants and expectorants, combinations r05fa opium derivatives and expectorants r05fa01 opium derivatives and mucolytics r05fa02 opium derivatives and expectorants r05fb other cough suppressants and expectorants r05fb01 cough suppressants and mucolytics r05fb02 cough suppressants and expectorants r05x other cold preparations empty group