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Vitamin B12, also known as cobalamin, is a water-soluble vitamin involved in metabolism. Humans use it as a cofactor in DNA synthesis, and in both fatty acid and amino acid metabolism. It is important in the normal functioning of the nervous system, and in the circulatory system in the maturation of red blood cells. 

Hands holding vials up

Who needs vitamin B-12 Injections?

B-12 injections are used to treat the symptoms of a deficiency in the B-12 vitamin. Symptoms of the deficiency include:

  • fatigue

  • mood swings 

  • depression

  • brain fog / difficulty thinking or remembering 

Vitamin B12 is the most chemically complex of all vitamins, and for humans, the only vitamin that must be sourced from animal-derived foods or from supplements.

How Does It Work?

Vitamin B12 deficiency anaemia is usually treated with intramuscular injections of vitamin B12, called hydroxocobalamin. 

We recommend that to see the full result you should have 1 injection weekly for 4 weeks to raise your B12 levels to where they should be and subsequently continue with a single injection every month. 

The injection is taken to alleviate symptoms, which you should notice an immediate response to. Therefore if after the initial 4 weeks there is no change to your symptoms we recommend you speak to your health care professional. 

What to expect:

Appointment Time

Injectable appointments are generally very quick; lasting no more than 15 minutes.

The B-12 injection involves an intramuscular injection to usually the upper arm or glutes. 


Similar to a vaccination the injection area might sting initially but there is no lasting discomfort or stiffness. 

Just make sure you follow aftercare instructions given to you by your practitioner.

Refresh Time

Initially 1 injection a week is recommended for 4 weeks and then following a maintenance dose of once a month. 

This can differ for certain medical histories therefore please speak to our practitioner directly.


Single injections are priced at £25 each. If you choose the recommended initial 4x injections these are priced as a package as £80. 

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