Can Iron Tablets Cause Black Stools?
September 19, 2023 | by Yashaswi Pathakamuri | Posted in FAQ's
Yes, iron tablets or iron supplements can cause black or dark-colored stools. This change in stool color is a common and harmless side effect of taking iron supplements and is often referred to as “iron stool.”
The dark color of the stools occurs because iron supplements contain a form of iron that is not well-absorbed by the body, and some of it remains unchanged in the gastrointestinal tract. When this unabsorbed iron reacts with certain compounds in the digestive system, it can turn the stool black or dark green.
While black stools from iron supplements are usually harmless, it’s important to be aware of this potential side effect. However, not all black stools are caused by iron supplements. Black or tarry stools can also be a sign of gastrointestinal bleeding, which can be a serious medical condition. If you are not taking iron supplements and notice black stools, especially if it’s accompanied by other concerning symptoms like abdominal pain, nausea, vomiting, or rectal bleeding, you should seek medical attention promptly.
If you are taking iron supplements and experience black stools but have no other concerning symptoms, it is likely related to the iron supplementation. However, if you have any doubts or concerns, it’s always a good idea to discuss them with a healthcare provider, who can provide guidance and ensure that the black stools are not a sign of an underlying medical issue.