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In addition, the bioavailability of the vitamin B12 ingested depends on the amount delivered in each dose (Domke et al., 2004)
Fortunately, they were able to knock that on the head quite quickly, something that non clinicians find more challenging to do
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As a result, you can get more B12 with injections than with oral supplementseven if you take higher oral doses
Factors That Influence How Quickly Vitamin B12 Works The rate at which Vitamin B12 functions in your body depends on various influencing elements
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