A gastroscopy is a test that looks at the inside of your food pipe (oesophagus), stomach and the first part of your small intestine (small bowel).
If you are having a gastroscopy, you will usually have a light sedation. It usually takes 15 to 30 minutes. You may feel drowsy, and you might feel bloated from air introduced during the examination. You will probably not remember anything about the procedure.
You might have a gastroscopy to find out the cause of symptoms such as: