Or, click Cancel to remain on the current site. Please note, on the next page, only the information in the yellow box applies to DSM employees -- complete the information required. For questions on the Comparison Tool, contact Horizon Blue Cross Blue Shield at 1-800-722-2583. SHBP/SEHBP Home.
Green: 1  Green stools are always normal, but they can be mistaken for black stools. 2  Bile. Most dark green stools are caused by bile. 3  Green stools are more common in formula fed than breastfed infants. It can be normal with both.  Green stools are more common with diarrhea. This is due to a fast transit time through the gut.
Several possibilitie: Stool can be dark from iron pills pepto bismol (bismuth subsalicylate) or foods like spinach. Black tarry stools may indicate bleeding from the stomach area and should be checked right away. ...Read more.