Below are some resources from the American Gastroenterology Associations websites for our patients to find out more about common GI related problems. Symptoms and complaints related to the digestive tract are some of the most common reasons we take over-the-counter medications, prescription medication or seek the advice of health care providers. Gastroenterologists, or "GIs," are medical specialists with extensive training in diseases of the digestive tract. GIs can answer your questions, perform tests in making a diagnosis and prescribe the best course of treatment to help you feel better.