Pharmacological treatment for upper gastrointestinal bleeding may include aggressive fluid resuscitation to improve symptoms of hypovolemia, transfusion of red blood cells when necessary to correct anemia, and the use of acid-suppressive and gastroprotective medications to prevent further bleeding. Common causes of upper gastrointestinal bleeding include gastric ulcers, duodenal ulcers, and even vascular anomalies. Therefore, in the early stages, it is advisable to choose acid-suppressive and gastroprotective medications to treat common causes such as gastric ulcers and gastritis, which lead to bleeding. The main symptoms of upper gastrointestinal bleeding are vomiting blood or bleeding from the bowels. In severe cases, the patient may also experience dizziness and fatigue due to low blood volume. For such patients, once the condition stabilizes, it is important to conduct routine blood tests, electrocardiography, and gastroscopy to identify the specific cause of the bleeding. Different causes require different treatment approaches. If the bleeding is suspected to be caused by a tumor, pharmacological treatment may not be very effective, and surgical intervention might be more appropriate. (The use of medications should be under the guidance of a doctor.)