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The Anatomical Therapeutic Chemical (ATC) classification system



Level 4

  • R - Respiratory system
  • R03 - Drugs for obstructive airway diseases
  • R03B - Other drugs for obstructive airway diseases, inhalants
  • R03BB - Anticholinergics

  • R03BB01 - Ipratropium Bromide
  • R03BB02 - Oxitropium Bromide
  • R03BB03 - Stramoni preparations
  • R03BB04 - Tiotropium Bromide






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