Under normal circumstances, drinking cola will not lead to black stools, but a large amount of it may lead to black stools when gastrointestinal bleeding is induced.
The main ingredients of cola are caramel, carbon dioxide, theobromine, phosphoric acid, coffee and other ingredients, a small amount of which can provide energy, relieve fatigue and promote appetite, but a large amount of which may lead to increased secretion of gastric acid and damage to the gastric mucous membrane, resulting in abdominal distension, vomiting and other symptoms.
Under normal circumstances, the ingredients in cola can be digested and absorbed without affecting the color of the stool. However, if you have gastric diseases such as gastric ulcer and gastritis, the increased secretion of gastric acid after drinking cola may aggravate the damage of gastric mucosa and lead to gastric hemorrhage and the symptom of black stool.
If you have black stool after drinking cola, we recommend you to go to the hospital to check the stool routine, gastroscopy and other programs to find out the cause.