What is the reason for drinking red wine black stool?

Drinking red stool black may be caused by drinking a lot of wine after gastrointestinal mucosa shows erosion bleeding, because the amount of bleeding is less, so there is no hematemesis performance, but blood mixed with feces and black, especially gastritis, gastric ulcer patients, more likely to show gastric bleeding, resulting in black stools. In addition, eating pig blood, sheep blood or chicken blood, duck blood, etc., can also cause stool black. Taking some iron, charcoal powder or traditional Chinese medicine, can also cause stool black, pay attention to the difference. Best to the hospital to do stool occult blood test, it is recommended that patients with stomach problems do not drink a lot.