Answered by Starshine22 - Jan. 5, 2017 5:23pm
If you are taking extra iron it can also turn it black. I'm taking extra iron and mine is sometimes black and I take it twice a day.
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Answered by Mammoth - Dec. 30, 2016 2:49pm
From what I looked up, it could be dark due to things you ate of a certain colour.... or it could be a sign of a little blood in the digestive tract.
If it's black, sticky and smells bad, that is definitely cause for concern, apparently.
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