can b12 injections be harmful Vitamin Benefits and Best Sources Vitamin B12: A Comprehensive Review

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Patients in this borderline range should not dismiss symptoms simply because their B12 level is above the strict cutoff clinical context and additional testing matter

People with documented malabsorption disorders including Crohns disease, celiac disease, or those whove had portions of stomach or small intestine removed need direct delivery

When you have pernicious anemia, you need daily B12 shots

The serum test measures all B12 present in the blood, as well as all substances that are chemically similar to vitamin B12