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When using B12 you want to look for pre-methylated or pre-activated formulations of B12
And so she gave me a shot in the arm." The Toronto woman said she switched to an over-the-counter supplement once her levels returned to normal
J.et al (2018)
However, if low B12 is present for a long time, it can lead to problems such as anemia, nerve symptoms, and difficulties with concentration or balance
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