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Dose and timing should follow a confirmed deficiency and your GPs review, not a fixed course sold in advance
reduced metabolic rate
The quality and source of the B12 solution can impact pricing, with FDA-compliant facilities potentially charging more due to strict quality control measures
Within sensible limits, the basics help your body hold its levels: a diet that includes B12 sources if you are not vegan, limiting heavy alcohol use, and not smoking, since both affect how you absorb and store nutrients
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