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Pain, swelling or itching can occur at the injection site
Always follow the instructions on your specific vial label and your laboratory SOP
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Without supplementation, deficiency is nearly universal within 23 years People taking metformin long-term metformin use reduces B12 absorption by 1030% through calcium-dependent ileal uptake disruption [4] People taking PPIs or H2 blockers acid suppression impairs B12 release from food proteins
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This inhibitory effect is reversed with calcium supplementation
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