can b12 injections cause black stools stool isn’t always harmless—it signal internal bleeding in the digestive tract. While some foods or iron supplements can darken stool, persistent black, tarry need urgent medical Why is my poop black?
Why is my poop black? Causes and treatment of black or tarry stool What Do Different Stool Colors Mean? 5 Causes of Black Poop and When To See a Doctor 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 Black stool after treatment : r HPylori Signs You May Have a B12 Deficiency
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