Vitamin B12 Injection Service

Even though it is found in many foods, a Vitamin B12 deficiency is still relatively common. Low levels of B12 can produce symptoms both physical and psychological.

At Cyncoed Pharmacy, our Vitamin B12 Injection Service is designed to help you address these symptoms and improve your overall health. Our local pharmacy is dedicated to providing you with the essential Vitamin B12 injections needed to maintain your well-being. Whether you have a confirmed Vitamin B12 deficiency or are experiencing symptoms of low B12 levels due to your risk factors, our professional and friendly team is here to assist you!

What is Vitamin B12?

Vitamin B12 is a nutrient that plays a crucial role in maintaining a healthy nervous system and supporting the body’s energy production. A deficiency in vitamin B12 can lead to a variety of health issues, including anaemia and neurological problems. 

Symptoms of Vitamin B12 Deficiency

Vitamin B12 deficiency can manifest through a range of symptoms, such as:

  • Cognitive changes. For example: issues with memory, understanding and judgement
  • Weakness and lethargy
  • Shortness of breath (Dyspnoea)
  • Rapid breathing (Tachypnoea)
  • Headache
  • Indigestion
  • Loss of appetite
  • Palpitations
  • Visual disturbances

For further information about the symptoms of a Vitamin B12 deficiency, please refer to the NHS website here.

Main Causes of a Vitamin B12 Deficiency

The primary causes of a Vitamin B12 deficiency include:

  • Insufficient dietary intake (common in vegan and vegetarian diets)
  • Certain medical conditions, e.g. Crohn’s disease, use of Proton Pump Inhibitors or a functional Vitamin B12 deficiency
  • Pernicious anaemia

For a more comprehensive understanding, more information can be found here.

Who Needs This Service?

Our Vitamin B12 Injection Service is suitable for:

  • Individuals aged 18 and above
  • Patients with a confirmed diagnosis of Vitamin B12 deficiency
  • Those previously prescribed Vitamin B12 injections
  • Individuals displaying symptoms of a B12 deficiency or having risk factors (such as those with pernicious anaemia or following a vegetarian/vegan diet)

Note: For patients without prior diagnosis, we may offer the service based on symptoms, risk factors or confirmation of a B12 deficiency through a reliable test kit.

vitamin b12 injection for vitamin b12 deficiency

How Does the Service Work?

  1. Consultation: Schedule an appointment with our pharmacist, Hayley Jones, for an initial consultation.
  2. Assessment: Hayley will assess your need for the injection based on your symptoms, medical history and risk factors.
  3. Administration: If eligible, the Vitamin B12 injection will be administered at your appointment.

It’s as simple as that!


The cost of our Vitamin B12 Injection Service is £39. This includes the initial consultation and the injection. 

Please note: If ineligible for the Vitamin B12 injection, there will be a consultation fee of £15.

How to Book

To book an appointment, you can book online here!

Frequency of Injections

The exact schedule will be determined by our pharmacist in conjunction with your GP, based on your specific treatment plan.

How Long Until You Feel the Effects?

Improvements in symptoms can be expected within 2 weeks but may take up to three months, especially for diet-related deficiencies.

Side Effects

Common side effects of Vitamin B12 injections include:

  • Discomfort at the injection site
  • Mild diarrhoea 
  • Itching

A Patient Information Leaflet will be provided at your appointment and our pharmacist will discuss with you potential side effects and their management. 

Note: Any adverse reactions should be reported via the Yellow Card scheme.


Our pharmacist reserves the right to refuse treatment based on clinical judgement. Where there is doubt, treatment will not be initiated until the patient has sought further advice from the recommended healthcare professional. 


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Additional Information

Preferred Injection Site: Deltoid muscle of the upper arm

Dietary Requirements: The Cobalin-H injection is suitable for vegetarians and vegans. 

Exclusions: We are unable to administer the Vitamin B12 injection to patients under the following conditions:

  • If you have a known hypersensitivity to any of the ingredients of the injection or have had a previous adverse reaction after having the Vitamin B12 injection
  • If you are known or suspected to be pregnant
  • If the diagnosis for Vitamin B12 deficiency is unclear or uncertain
  • If you have a cobalt allergy, cardiac arrhythmias or any other medical condition that would contraindicate the use of Vitamin B12 injections

For further details, you can visit NICE guidelines on B12 and Folate deficiency.