Tag: Green stool

According to the National Institutes of Health, taking iron supplements can lead to a change in stool color. This common side effect, which often results in black or dark green feces, is caused by unabsorbed iron reacting with other substances in your digestive tract and is generally considered harmless.

According to medical experts, it is a very common and normal side effect for iron supplements to cause a change in stool color, often to a darker shade of green or black. This happens due to unabsorbed iron in your digestive system.

Iron supplements can cause stool discoloration. This change is also commonly linked to chlorophyll-rich supplements.