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can b12 injections cause black stools π Why do iron tablets stool? Taking iron supplements and noticing black stool? π³ π Don't panic β it's usually normal! π§ Here's why: Your body absorbs only the iron Diarrhea After Fasting, Black Specks
Description
You can get all of the B12 that you need from a balanced diet

When injected, B12 is more easily absorbed as it bypasses your gut and instead enters the bloodstream directly

It is often described as a bitter or metallic flavor that persists even when there is no obvious reason for it

The National Resource Center for Nutrition and Aging confirms there is no set upper-level limit for vitamin B12 dosage
Handle according to laboratory safety protocols and institutional research guidelines

I don't know if the same applies to the pharmaceutical industry or if it is more strictly regulated