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The Anatomical Therapeutic Chemical (ATC) classification system


Level 5

  • R - Respiratory system
  • R03 - Drugs for obstructive airway diseases
  • R03D - Other systemic drugs for obstructive airway diseases
  • R03DA - Xanthines
  • R03DA54 - Theophylline, combinations excluding psycholeptics

  • Theophylline, combinations excluding psycholeptics





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