However, if there are neurological symptoms that have arisen due to B12 deficiency, they could take up to three months to improve, with mild improvements occurring in the first six weeks
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Restoring B12 levels can help alleviate common symptoms of deficiency such as fatigue, weakness, memory issues, and numbness or tingling in the hands and feet
Elevated serum B12 levels may sometimes indicate underlying medical conditions rather than true overdose, warranting clinical investigation to exclude haematological disorders, liver disease, or renal impairment
318 (4), G717G724
( National Institutes of Health, Office of Dietary Supplements