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General recommendations are for 2.4 micrograms (mcg) a day, although those who are elderly or breastfeeding women may need more
For those without an absorption problem, research suggests that high-dose oral B12 supplements can be as effective as injections in raising and maintaining B12 levels
its page is the better starting point for the underlying copper-peptide chemistry
B vitamins are involved in a variety of physiologic processes, including supporting normal nervous system function, red blood cell production, and cellular health
Vitamin B12 (Cyanocobalamin) 10,000 mg/ml Injection Hematopoietic Pernicious anemia with or without neurological complications
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