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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
Treatment Frequency and Protocol: B12 injection frequency varies based on deficiency severity and individual response
No clear labeling or missing concentration information suggests non-pharmaceutical product
The suppliers labeling, marketing language, and documentation should reflect that distinction
How you react largely depends on your specific situation
Those with a diagnosed deficiency - usually through a symptom checker alongside a simple blood test - will be prescribed and offered regular vitamin B12 intramuscular injections through their GP practice, district nurse, or NHS services
