It is a test to check inside your throat, food pipe (oesophagus) and stomach, known as the upper part of the digestive system. A long, thin, flexible tube with a small camera inside it, is passed into the mouth then down the throat and into stomach. A gastroscopy can also be
used to remove tissue for testing (biopsy) and treat some conditions such as stomach ulcers. You will usually be offered medicine called sedation to make you feel relaxed and sleepy, and throat spray to numb your throat.