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 Black stool after treatment :
Black stool after treatment : r HPylori Signs You May Have a B12 Deficiency Does Berberine Change Stool Colour? UK Medical Guide Bolt Pharmacy Understanding B12 Deficiency: Signs on Hands and Feet What Do Different Stool Colors Mean?
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