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Share a complete list of your prescriptions, over-the-counter products, vitamins, and supplements during your consultation so your provider can check for potential interactions
[13] This functionality is lost in vitamin B12 deficiency, and can be measured clinically as an increased homocysteine level in vitro
Medications: In most severe cases of vitamin deficiency, doctors may administer vitamin B12 injections or prescribe vitamin B12 medication
nice.org.uk/guidance/ng239/
2026 Jan;54(1):223-229
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