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 Understanding B12 Deficiency: Signs on

Understanding B12 Deficiency: Signs on Hands and Feet Why is my poop black? Causes and treatment of black or tarry stool What Do Different Stool Colors Mean? 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

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