can b12 injections cause black stools Causes of Stool Black stool isn’t always harmless—it

Black stool isnt always harmlessit can signal internal bleeding in the digestive tract. While some foods or iron supplements can darken stool, persistent black, tarry stools need urgent medical If you notice your poop is black , it might be due to something as simple as a change in your diet or a new medicine you're taking. Sometimes, though, it's a Vitamin B12 deficiency symptoms: Diarrhoea could be sign you're lacking B12 Black stools? Sometimes poo can be black in color if you are taking medicines like iron tablets. It can also be black if you have eaten a lot of liquorice. If the Does Iron Supplements Cause Black Stool? A Guide

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