Thanks
Health Professional
The current cut-off for Vitamin B12 is about 400 pg/mL (about 300 pmol/L) - anything lower than that probably needs taking it as a supplement.
It is preferable to take it as methylcobalamin on an empty stomach with no food for about an hour afterwards.
An Accredited Practising Dietitian whose knowledge is up-to-date should be able to help you with this.
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