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The NCL Joint Formulary Committee (JFC) has published guidance on managing patients who are receiving maintenance vitamin B12 injections during the COVID-19 outbreak, which provides specific advice for the following three patient groups:

• vitamin B12 deficiency not thought to be diet-related in patients without absorption issues
• vitamin B12 deficiency not thought to be diet-related in patients with absorption issues
• vitamin B12 deficiency thought to be diet related.