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However, studies assessing bioavailability of B12 from specific food sources in healthy participants have shown that absorption varies depending on both the specific food product and the magnitude of the dose, ranging from 36%24% for egg products (dose 0.30.94mg, respectively), 83%52% for lean meat (dose 0.545.11mg, respectively), 42%30% for fish (dose 2.113.1mg, respectively) and 49%4.5% for liver products (dose 0.538mg, respectively) (Doets et al., 2013)

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Additional info National Heart, Lung, and Blood Institute (NHLBI) Learn more about Vitamin B12 deficiency Treatment options Care guides Further information Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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