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3 Rare But Serious Side Effects of Vitamin B12 Supplements

Table 1 summarizes anecdotal cases, case series, and both completed and ongoing trials

Malnutrition

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Thank you so much Patricia Not an expert but my reading of intrinsic factor abs (=antibodies I presume) - is that the test has shown that you do have antibodies and hence have tested positive and do have pernicious anaemia in the true sense - an autoimmune response which has shut down the mechanism by which you absorb most of your B12 from your diet - or at least made it so inefficent that you aren't getting enough B12