Suspected vitamin B12 deficiency

This page describes a consultation. Any treatment that follows is a prescription-only medicine, prescribed by Dr Badri after he has assessed you and reviewed your blood results.

Who genuinely needs treatment

National guidance identifies the groups who benefit: people with a confirmed deficiency, with or without anaemia; people with autoimmune gastritis or pernicious anaemia, who need lifelong replacement; people who have had stomach or bowel surgery affecting absorption; and people whose absorption is affected by long-term medication or a strict vegan diet without supplementation.

What the evidence says about everyone else

We are going to be blunt, because this is an area where a great deal is claimed.

A review pooling sixteen randomised trials across 6,276 people found no evidence of benefit in people who are not deficient — not for cognition, not for mood. Only one of those trials even measured fatigue, so the familiar claim that B12 injections help tiredness in otherwise healthy people rests on almost nothing.

We do not offer this as an energy treatment, a wellness shot or a pick-me-up. If that is what you are looking for, we are the wrong clinic, and we would rather tell you now.

Testing comes first

National guidance is explicit that blood samples are taken before replacement begins. Injecting first makes the deficiency impossible to diagnose and can mask an underlying cause that matters. A low B12 is a finding to be explained, not simply corrected.

For that reason we do not offer walk-in injections, and we cannot treat you on the strength of a test done elsewhere without reviewing it.

If treatment is appropriate

The medicine used and the schedule are matters for the prescriber and depend on your diagnosis. Where a deficiency is confirmed, treatment usually begins with a loading course followed by maintenance injections at intervals. Any side effects and risks are explained to you before you consent, in line with the patient information leaflet for the medicine prescribed.

Injections are given in a clinical setting because that is where they belong. Allergic reactions are rare but reported, and blood potassium needs monitoring at the start of treatment for some patients.

What this is not

It is not a course you can buy, a package, or something to be chosen from a menu. It is a consultation, a blood test, and a clinical decision.