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Some people notice changes in energy sooner, especially if correcting a deficiency
Physician Assistants : Professionals under physician supervision performing injections
People with ME/CFS may be at risk of vitamin B12 deficiency if they have a diet that is low in vitamin B12-containing foods especially meat, dairy and fish
Haematological improvement typically occurs within days to weeks, with reticulocyte counts rising as the marrow responds
B12 injections are not a weight loss treatment
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