What causes loud belching?

Belching releases air from the stomach. Eating quickly, talking while eating, chewing gum, drinking through a straw, fizzy drinks and smoking can increase swallowed air. Reflux can bring stomach contents upwards and may cause a sour taste, burning or repeated burping. Gastritis, Helicobacter pylori infection, a hiatus hernia and irritable bowel syndrome can also occur alongside troublesome digestive symptoms, although belching alone does not identify a specific condition.

Keep a brief diary of meals, drinks and symptoms. Eat slowly, take smaller mouthfuls and reduce fizzy drinks if they trigger episodes. Avoid lying down soon after eating and notice whether fatty, spicy or acidic foods worsen reflux symptoms. Do not stop prescribed medicine without advice; a clinician can discuss whether acid reflux medication is appropriate and whether further assessment is needed.

Arrange medical advice if belching is persistent, newly troublesome or accompanied by ongoing upper-abdominal pain, repeated vomiting, difficulty swallowing, unintentional weight loss, black stools or marked tiredness. Seek urgent help for severe chest or abdominal pain, vomiting blood, fainting or breathing difficulty. These symptoms need assessment rather than being attributed to trapped air.

Ask what pattern of symptoms suggests reflux or another digestive problem, whether testing is needed, and which medicines or dietary changes are suitable for you. Mention how long the belching has lasted, what brings it on, and any pain, nausea or bowel changes.