The Grading of Recommendation, Assessment, Development, and Evaluation (GRADE) tool was used to assess the certainty of the evidence for the two primary biochemical outcomesserum vitamin B12 concentration increase and homocysteine reductionacross all included studies, and separately for randomised controlled trials (RCTs) and observational studies
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In most cases, vitamin B12 deficiency symptoms may include extreme tiredness, poor concentration, memory loss, dizziness, and disorientation
Hypokalemic paralysis in an adolescent following dexamethasone and B12 injection: A case report and literature review