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To counteract this many people take supplements to help improve their B12 levels
Additionally for people who are dealing with an acute B12 deficiency, oral supplements may not be the best course of action given that there is no way to determine how much is actually absorbed
Cant say enough
Theyre portable enough to bring to the gym, the field, or wherever your activities take you
(3) Sun WD, Zhu XJ, Li JJ, Mei YZ, Li WS, Li JH
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