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"Oral vitamin B12 versus intramuscular vitamin B12 for vitamin B12 deficiency: a systematic review of randomized controlled trials"
Images created with BioRender.com Peer-reviewers and editors: the Nutritional Medicine Institute thanks the peer-reviewers and editors for their important contributions
How should vitamin B12 injections be stored and handled to maintain their stability
Acute symptoms such as fatigue may improve within days, whilst neurological symptoms like paraesthesia typically require weeks to months of treatment
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