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It is the single variable that determines whether your vial is therapeutic or garbage
Commonly it is administered as 500 mcg per week for 6 weeks then maintenance dose is continued which is 500mcg per 2-4 weeks, as per vets findings
Last clinically reviewed: 31 July 2026 Clinical information sources NICE NG239 Vitamin B12 deficiency in over 16s: diagnosis and management NHS Vitamin B12 or folate deficiency anaemia NHS Diagnosis NHS Treatment MHRA Vitamin B12 and cobalt allergy advice This page provides general information about the pharmacy service and does not replace personalised advice from a pharmacist, GP or other healthcare professional
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