| | R - Respiratory System |  | Inhaled antiinfectives are classified in ATC group J - Antiinfectives for systemic use.
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| | R03 - Drugs for Obstructive Airway Diseases |  |  | 
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| | R03B - Other Drugs for Obstructive Airway Diseases, Inhalants |  | This group comprises all drugs for obstructive airway diseases for inhalation excl. adrenergics (R03A).
 |  | See comment under R03A.
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| | R03BC - Antiallergic Agents, Excl. Corticosteroids |  |  |  | The DDDs are based on the prophylaxis of asthma.DDD for inhalation aerosol and inhalation powder differ in this group, due to differences in dosage recommendations for these dosage forms.
 
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| | R03BC01 - Cromoglicic Acid |  | | Concentr. | Adm.Route | Note | 
|---|
 |  | Inhal.solution |  |  |  | Inhal.aerosol |  |  |  | Inhal.powder |  | 
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