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|  | The Anatomical Therapeutic Chemical (ATC) classification system |  | 
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 Level 5
 
 R - Respiratory systemR01 - Nasal preparationsR01A - Decongestants and other nasal preparations for topical useR01AX - Other nasal preparationsR01AX03 - Ipratropium Bromide
 
 Ipratropium Bromide
 
 
 
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