What causes black stool color?

Stool color blackening may be related to diet, drugs, gastric ulcer and other factors.

1, diet such

as red pitaya, beet and pig liver, duck heart, etc., which contains more pigments and iron, a large intake, may lead to stool staining, performance of black stools.

2, drugs

if long-term large intake of ibuprofen, aspirin and other non-steroidal anti-inflammatory drugs, may stimulate and damage the gastric mucosa, leading to blood exudation, and mixed with stool, making it black.

3, gastric ulcer

gastric ulcer occurs in the gastric lining mucosa or deeper ulcers, further by gastric acid or food stimulation, can make blood exudation, leading to stool blackening.