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Frontiers | Efficacy of sublingual and oral vitamin B12 versus intramuscular administration: insights from a systematic review and meta-analysis

Medically reviewed by: Micheal Seay, MSN, APRN, FNP-BC

Pharmacy

Strength:5mg+5mg

UK guidance (MHRA and NICE) advises checking B12 levels in patients on metformin who develop symptoms of deficiency (anaemia, neuropathy) and considering periodic monitoring in those on long-term therapy