Holistic & Other Treatments
B12 Injections in London
From £40A quick vitamin B12 injection to top up your levels and support energy, planned around your needs.
At a Glance
B12 Injections — The Essentials
- Treatment Time
- ~5 minutes
- Downtime
- None
- Results Last
- Ongoing with regular top-ups
- Results Visible
- Within days for some people
- Sessions
- Often 4 weekly, then monthly
- Price From
- £40
About the Treatment
What are B12 Injections?
Vitamin B12 is essential for making healthy red blood cells, for the nervous system and for turning food into energy. Low levels can leave you feeling tired and weak, and may cause tingling, low mood or poor concentration.
B12 injections deliver hydroxocobalamin, a form of vitamin B12, directly into a muscle, usually the upper arm, so they don't depend on absorption from the gut. The injection itself takes around five minutes.
B12 injections are prescription-only in the UK, so every treatment starts with a consultation about your symptoms, diet and medical history. Where a deficiency is suspected, we may suggest a blood test or advise you to see your GP, as low B12 can have causes that need medical investigation.
Benefits
Why You'll Love It
- Tops up vitamin B12 levels quickly
- Bypasses absorption from the gut
- Supports energy, red blood cell production and nerve health
- A quick 5-minute injection with no downtime
- A schedule tailored to your needs
What to Expect
Your B12 Injections Journey
- 01
Consultation
A thorough one-to-one assessment of your goals, skin and medical history.
- 02
Bespoke Plan
A personalised plan designed and explained by a GDC-registered practitioner.
- 03
Treatment
Your treatment carried out safely and precisely in our private Mayfair clinic.
- 04
Aftercare
Clear aftercare guidance and a follow-up to support your results.
Gallery
Inside the Clinic
A look at our calm, private Mayfair clinic and the B12 Injections experience.
Pricing
B12 Injections Costs
Prices below are a guide. Your exact plan and cost are confirmed at your consultation.
- B12 Shot£40
Questions
Frequently Asked
What are B12 injections and how do they work?
They deliver a concentrated dose of vitamin B12, usually as hydroxocobalamin, directly into a muscle. B12 is needed for red blood cell production, the nervous system, DNA synthesis and energy metabolism.
What are the benefits of B12 injections?
They help correct low B12 levels and support red blood cell production, nerve function and energy metabolism. They're most useful for people who are low in B12 or don't absorb it well from food.
How often should I have B12 injections?
It depends on your needs. We often start with four injections one week apart, then once a month, but the right schedule is agreed with you at your consultation.
How soon will I notice a difference?
It varies from person to person. Some people notice more energy within a few days of starting treatment.
Can B12 injections help with weight loss?
B12 plays a part in energy metabolism, but there's little scientific evidence that B12 injections help with weight loss. They're mainly used to correct low levels and support overall health.
Can I have too much B12?
B12 is water-soluble, so the body usually removes any excess. When given as recommended, the risk of having too much is low.
Are there any side effects?
Usually mild: soreness, redness or swelling where the injection was given, and occasionally temporary dizziness or a headache. Allergic reactions are rare, and we'll go through your medical history first.
Explore More
Our Treatments
GlycanAge
£245A finger-prick test that measures your biological age by analysing inflammation-linked glycan patterns in your blood.
Learn more →IV Drips & IM Shots
From £40Targeted vitamin and wellness infusions to support energy, recovery and radiance.
Learn more →Philips ZOOM Teeth Whitening
From £129Professional in-clinic teeth whitening for a brighter, confident smile.
Learn more →Weight Loss Management
From £160A medically supervised weight management programme tailored to you.
Learn more →Ready to book your B12 Injections?
Book a consultation with Dr Alexa in Mayfair, or send us a message and we'll be happy to help.
Suitability for any treatment is confirmed during your consultation. Results vary between individuals. This page is for general information and does not constitute medical advice.