What Color Does Iron Change Poop?
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4 min read
Iron supplements often cause a harmless yet alarming change in stool color, turning it dark green or black due to unabsorbed iron compounds passing through the digestive tract. This benign side effect is widely documented and considered a normal consequence of oral iron therapy. However, it is crucial to understand the difference between this normal discoloration and a more serious condition, such as internal gastrointestinal bleeding.
