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And women who are pregnant or breastfeeding need more
Same goes for many other major retailers like Alibaba and Walmart
Many of the issues above can be symptoms of other serious conditions
"Vitamin B12 and the risk of neural tube defects in a folic-acid-fortified population"
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The AAFPs evidence-based clinical review states directly: Oral administration of high-dose vitamin B12 (1 to 2 mg daily) is as effective as intramuscular administration for correcting anemia and neurologic symptoms in patients with B12 deficiency (Langan RC, Goodbred AJ, American Family Physician, 2017)
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