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2 The British Society for Haematology recommends intramuscular vitamin B 12 for severe deficiency and malabsorption syndromes, whereas oral replacement may be considered for patients with asymptomatic, mild disease with no absorption or compliance concerns
Different B12 Treatment Options and Their Timelines The NHS and NICE guidelines recommend specific B12 treatment regimens based on the underlying cause and severity of deficiency
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The choice between them depends on whether appetite control or direct metabolic enhancement is the priority
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