In this module, we will discuss upper GI bleeding and a comprehensive diagnostic approach to its many causes. You will learn, what key questions to ask patients, what to look for on examination, and most importantly you will learn which investigations and treatment options to perform at the appropriate time. Additionally, you will learn a thorough management plan for any patient with lower GI bleeding, as well as, what specific treatments to perform in specific cases, such as erosive gastritis, Mallory-weis tears, variceal bleeds, and bleeding peptic ulcers.