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Vitamin B12 injections are medically necessary for patients with pernicious anemia, severe malabsorption syndromes, post-bariatric surgery absorption failure, or critically low B12 levels with neurological symptoms
Not always
Bibcode:1999ARNut..19..357B
Therefore, a 1,000 g oral dose would yield approximately 10 g of absorbed B12
They are working hard to make changes and eliminate any further restrictions
For patients with a diagnosed deficiency, B12 injections may be given daily or weekly during the initial correction phase, then monthly for maintenance
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