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Long-term use of medications like proton pump inhibitors (PPIs) and metformin[16], which can reduce B12 absorption
Where do our vitamins come from
"Therapeutic approaches to cobalamin-C methylmalonic acidemia and homocystinuria"
It describes a number, not a disease, and unlike a high potassium or calcium it does not itself damage tissue
B12 Deficiency: If there is a vitamin B12 deficiency, the starting dosage of 30mcg is administered beneath the skin or into the muscle daily for scheduled days to boost the overall levels
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