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How Long Does It Take for B12 to Work
Sourcing a tested material does not change the evidence picture described above trial data still do not transfer to any specific product, and nothing here is a therapeutic recommendation
They are well-conserved during genome evolution and have similar modes of action (Zhang et al., 2023)
Here in the UK, a B12 deficiency would usually mean 6 injections aver the course of a month (loading doses) then 1 every 3 months (maintenance doses)- a regime that seems dissatisfactory to the point of detriment to many many people, but one we have been stuck with for far too long
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