b12 injection side effects pregnancy Vitamin Sites: All You Need to Know Vitamin B12 toxicity: Diarrhoea, dizziness

Findings suggest it may operate differently than growth hormone, particularly in relation to receptor interaction and lean body mass

With a higher and more balanced metabolism, your body will convert food into energy and help to burn calories faster

Further, NICE and the BNF says that if there are neurological symptoms present, then every other day injections are the recommended treatment, so all the points you make about B12 being stored and sufficient are not really relevant

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While no mechanism suggests delayed toxicity, this cannot be completely ruled out without long-term controlled studies