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True deficiency may be overlooked if folic acid is taken alone
Monitor with a thermometer
When absorbed directly through the gut, as food or tablets, your body will only take on as much B12 as it needs, and the excess will pass through your urine
The WHO recommends that once the vial of bacteriostatic water is open the preservatives will prolong its life for up to 28 days and after this period of time the vial should be discarded
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