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How Do I Know If I Need a B12 Injection
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The uneducated clinicians will say, you dont have Intrinsic factor antibodies (IFA) so you dont have pernicious anaemia (PA) and so you will stay on tablets because we decided you can now miraculously absorb B12 from food! This ludicrous concept crops up frequently (I have blogged about it before here.) It needs repeating so often PA is just one of many causes and they are all serious and need correct treatment
For a deeper look at how milligrams translate to units across different scenarios, read our guide on converting 20 units of tirzepatide to milligrams and our breakdown of 40 units in milligrams
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