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They are essential nutrients for the immune system and boost metabolism and brainpower
Which Is Better: Injections or Oral Supplements
For the other three components, validated human values are lacking
Hold the vial up to a light
BMC Public Health (2012) 12:394.10.1186/1471-2458-12-394 Summary Keywords oral vitamin B12, pernicious anemia, mecobalamin, cobalamin, cyanocobalamin Citation Chan CQH, Low LL and Lee KH (2016) Oral Vitamin B12 Replacement for the Treatment of Pernicious Anemia
Side effects are generally mild or absent
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