The procedure is generally not painful due to the local anaesthetic administered and, if necessary, a sedative. Patients might feel some discomfort or pressure, but severe pain is uncommon. A sore throat can occur afterwards but usually resolves within a day or two.
While gastroscopy is generally safe, it carries some risks, including adverse reactions to sedatives, bleeding (especially if a biopsy is taken or a polyp is removed), and, rarely, perforation of the digestive tract. Discuss any concerns with your doctor beforehand.
If you receive a sedative, you will need someone to accompany you home, as the sedative can impair your ability to drive and make decisions for the rest of the day.