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Vitamin B12 injections require a prescription and are used under provider supervision
Providers routinely encounter patients who experience severe gastrointestinal intolerance, metabolic adaptation, or frustrating weight loss plateaus that render these first-line therapies insufficient
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
Neurological symptoms can include tingling or numbness in the hands and feet (peripheral neuropathy), a sensation often described as "pins and needles"
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