atc code r01 atc code r01 atc code r01 nasal 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 r01 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, qr01. national issues of the atc classification may include additional codes not present in this list, which follows the who version. r01a decongestants and other nasal preparations for topical use r01aa sympathomimetics, plain r01aa02 cyclopentamine r01aa03 ephedrine r01aa04 phenylephrine r01aa05 oxymetazoline r01aa06 tetryzoline r01aa07 xylometazoline r01aa08 naphazoline r01aa09 tramazoline r01aa10 metizoline r01aa11 tuaminoheptane r01aa12 fenoxazoline r01aa13 tymazoline r01aa14 epinephrine r01aa15 indanazoline r01ab sympathomimetics, combinations excluding corticosteroids r01ab01 phenylephrine r01ab02 naphazoline r01ab03 tetryzoline r01ab05 ephedrine r01ab06 xylometazoline r01ab07 oxymetazoline r01ab08 tuaminoheptane r01ac antiallergic agents, excluding corticosteroids r01ac01 cromoglicic acid r01ac02 levocabastine r01ac03 azelastine r01ac04 antazoline r01ac05 spaglumic acid r01ac06 thonzylamine r01ac07 nedocromil r01ac08 olopatadine r01ac51 cromoglicic acid, combinations r01ad corticosteroids r01ad01 beclometasone r01ad02 prednisolone r01ad03 dexamethasone r01ad04 flunisolide r01ad05 budesonide r01ad06 betamethasone r01ad07 tixocortol r01ad08 fluticasone r01ad09 mometasone r01ad11 triamcinolone r01ad12 fluticasone furoate r01ad13 ciclesonide r01ad52 prednisolone, combinations r01ad53 dexamethasone, combinations r01ad57 tixocortol, combinations r01ad58 fluticasone, combinations r01ad59 mometasone, combinations r01ad60 hydrocortisone, combinations r01ax other nasal preparations r01ax01 calcium hexamine thiocyanate r01ax02 retinol r01ax03 ipratropium bromide r01ax05 ritiometan r01ax06 mupirocin r01ax07 hexamidine r01ax08 framycetin r01ax09 hyaluronic acid r01ax10 various r01ax30 combinations r01b nasal decongestants for systemic use r01ba sympathomimetics r01ba01 phenylpropanolamine r01ba02 pseudoephedrine r01ba03 phenylephrine r01ba51 phenylpropanolamine, combinations r01ba52 pseudoephedrine, combinations r01ba53 phenylephrine, combinations