Peptic ulcer disease is a common disorder that affects millions of people worldwide. Peptic ulcer disease has a major impact on quality of life and on the utilisation of the health system when complications occur. Understanding the causative roles of Helicobacter pylori and non‐steroidal anti‐inflammatory drugs has led to changes in management of the disease. Comorbidities in older people add further complexity to treatment. This article summarises the clinical aspects of peptic ulcer disease and outlines principles which enable effective treatment.