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All therapies require medical review, a licensed practitioner order, and authorization prior to administration
Without enough B12, the body may struggle to produce enough energy to sustain normal bodily functions, leading to tiredness and lethargy during the day and difficulty sleeping at night
Assay interference, sample handling and taking a supplement shortly before the blood draw can all distort a reading, and different laboratories use different methods and reference ranges
You can also find vitamin B12 in fortified cereals and nutritional yeast products
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