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what is more effective b12 injections or pills Vitamin vs. Supplements: Which Works Best? B12 Injections vs Pills: Richmond's
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[DOI] [PMC free article] [PubMed] [Google Scholar] 248.Beltr, M

it is firmly rooted in science
If stores of b12 had been available to me surely that would not have been the case

Vitamin B12 is an essential nutrient required for many bodily functions

Common signs include fatigue, weakness, mood changes, poor memory, numbness or tingling in the hands and feet, anemia, skin rashes, and mouth sores
