A minimally invasive procedure using a flexible tube with a camera (endoscope) to inspect the esophagus, stomach, and first part of the small intestine (duodenum).

Why you need it
• Persistent heartburn, difficulty swallowing, nausea or vomiting
• Unexplained anemia or upper-GI bleeding
• Suspicion of ulcers, gastritis, celiac disease, or Barrett’s esophagus

Preparation
• Fast (no food or drink) for 6–8 hours before your appointment
• Continue most medications; inform your doctor about blood thinners
• Arrange a companion to drive you home after sedation

During the procedure
• You lie on your side and receive sedation
• A mouth guard protects your teeth; the endoscope is passed gently through your mouth
• The lining is inspected; biopsies or small treatments can be performed
• Typical duration: 10–20 minutes

Afterwards
• Recovery in a monitored area for 30–60 minutes until sedation wears off
• Start with sips of water, then advance to a light diet as tolerated
• Avoid driving and heavy lifting for 24 hours

Risks & complications
• Sore throat, mild bloating or cramping
• Bleeding from biopsy sites (<0.5%)
• Perforation (tear) in lining (<0.1%)
• Sedation-related reactions (rare)

Follow-up
• Biopsy results in 3–5 days
• Discuss findings and next steps with your physician