Eat pectin bismuth why stool meeting is black

After eating bismuth pectin showed black stool, which is the color of bismuth pectin drugs, is a normal phenomenon, stop this drug symptoms will disappear. Application of bismuth-containing drugs, will cause to show black stool situation. If this drug is not applied, but there is black stool, the main consideration may be a certain relationship with food, but at the same time it may be abnormal upper gastrointestinal bleeding performance, after stool routine examination, to see if there is abnormal occult blood, you can clearly see whether there is abnormal disease.