Gastroesophageal reflux disease (GERD) is a chronic condition characterised by the retrograde flow of gastric contents into the oesophagus, leading to symptoms such as heartburn and regurgitation. It is clinically significant due to its potential to cause complications like oesophagitis, Barrett's oesophagus, and increased risk of oesophageal cancer. Effective management is crucial to alleviate symptoms and prevent long-term sequelae, impacting patient quality of life and healthcare utilisation.