| | A - Alimentary Tract and Metabolism |  |  | 
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| | A02 - Drugs for Acid Related Disorders |  |  | 
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| | A02B - Drugs for Peptic Ulcer and Gastro-Oesophageal Reflux Disease (Gord) |  |  | 
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| | A02BC - Proton Pump Inhibitors |  | Proton pump inhibitors in combination with domperidone are classified here in 50-levels.Potassium-competitive acid blockers e.g. vonoprazan are classified in this group.
 
 |  | The DDDs are based on treatment of gastro-oesophageal reflux disease.
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