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When to recheck vitamin B12 levels after intramuscular vitamin B12 (cobalamin) injection?
Vitamin B12 (cobalamin) is a water-soluble vitamin critical for red blood cell formation, DNA synthesis, neurological function, and energy metabolism
Within a day or two I felt much better
Lifestyle factors such as heavy smoking and drinking or a poor diet over a prolonged period can also lead to low B12 levels or deficiency
Clinical guidance recommends testing before deciding on injections aimed at improving energy or weight
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