A02BA02 ranitidine

A ALIMENTARY TRACT AND METABOLISM DRUGS

A02 DRUGS FOR ACID RELATED DISORDERS

A02B DRUGS FOR PEPTIC ULCER AND GASTRO-OESOPHAGEAL REFLUX DISEASE (GORD)

A02BA Histamine H2 receptor antagonists for peptic ulcer and GORD

A02BA02 ranitidine