Are you suffering from exhaustion, poor concentration, tingling in fingers or toes, clumsiness, depression? You could have a deficiency of this vitamin.

Are you vegan or vegetarian? You may not be eating enough of the groups of foods that are high in this.

Vitamin B12 is the largest and most chemically complex of all the known vitamins and is water soluble. It is normally readily absorbed from the food that we eat, and plays an important role in the production of red blood cells, carbohydrate, fat and protein metabolism, DNA and RNA production and supports the nervous system and iron function.

The main source of B12 for humans is from eating meat and fish. It can also be obtained from cheese, milk and eggs - and some species of seaweed. It is because Vit B12 is mainly found in animal products, that it is common for vegans and vegetarians to have a deficiency.

Other possible reasons for deficiency of this vitamin include gastric surgery, intestinal disease, the long term use of certain medications, and lack of the glycoprotein "Intrinsic Factor" (IF) which is produced by the stomach and required for the absorption of B12.

As a former Registered Nurse working in General Practice, I have tested, monitored and treated countless patients with this condition. About Me

Conditions linked to B12 deficiency:

  • Depression
  • Mood swings
  • Irritability
  • Psychosis
  • Confusion
  • Anxiety and panic attacks
  • Forgetfulness
  • Tension headaches
  • Clumsiness - especially in the dark
  • Tingling in fingers or toes
  • Hallucinations
  • "Fogged" brain
  • Onset of dementia
  • Bells palsy
  • Myalgic encephalomyelitis (ME)
  • Chronic fatigue syndrome (CFS)

Autoimmune disorders where B12 deficiency is often found:

  • Type 1 Diabetes
  • Grave's disease
  • Addison's disease
  • Guillain-Barre syndrome
  • Amyloidosis
  • Hashimoto's thyroiditis
  • Ankylosing spondylitis
  • Multiple sclerosis (MS)
  • Coeliac disease
  • Myasthenia gravis
  • Crohn's disease
  • Reactive arthritis
  • Restless leg syndrome
  • Rheumatoid arthritis
  • Ulcerative colitis
  • Sjogren's syndrome
  • SLE (lupus)
  • Pernicious anaemia

Certain genetic and social factors can also result in deficiency eg:

  • Crohn's disease
  • Atrophic gastritis
  • Coeliac disease
  • Treatment with Proton pump inhibitors (PPIs)
  • The use of antacid medications.
  • Pernicious anaemia
  • The use of illegal drugs
  • Nitrous oxide substance abuse
  • Gastrointestinal surgery.
  • High alcohol intake

How do I know whether I have vitamin B12 deficiency?

Traditionally, a blood test can be used to check the serum levels of vitamin B12. - however many people who have the symptoms of deficiency may have serum levels that are within the "normal range". This is because there aren't any national or international definitions of what "normal" range is, and the tests don't check the bioavailability of the B12 in your system.

Hence, it is better to assess by symptoms or Key triggers:

  • Tiredness
  • Hair loss
  • Depression
  • Dizziness
  • Pins & Needles
  • Recurrent headaches
  • Tingling/numbness in hands or feet
  • Palpitations
  • Tremors

Vitamin B12

Why is Vitamin B12 so important? . It is needed for healthy functioning of the following:

  • Nervous system
  • Mood and brain function
  • Manufacture of blood in the bone marrow
  • Peripheral systems
  • Healthy skin and mucous membranes
  • Glandular system
  • Immune system
  • Digestive system
  • Fertility
  • Healthy bones
  • Pregnancy
  • Embryo development

Vitamin B12 is needed for energy production in the body and for the synthesis of DNA.

Prior to a an appointment, I would send you a short health questionnaire to assess the likelihood that you may have sub-optimal levels of vitamin B12. 


Vitamin B12 deficiency can be treated with a one-off or short course of hydroxocobalamin (B12 vitamin injection).

B12 has been shown to be safe at any concentration in the system, and the US National Institute of Health - Office of Dietary Supplements and the US Institute of Medicine has concluded that " because of its low toxicity", no upper limits have been established - and the IoM stated that "No adverse effects have been associated with excess vitamin B12 from food or supplements in healthy individuals".

What improvements can I expect to notice after the injection?

Depending on your levels of B12 prior to the injection, you may require 1 or up to 5 injections before you begin to notice an improvement in symptoms. The standard treatment is to give a dose on alternate days for up to 2 weeks - followed by maintenance dose every 1-3 months.

Improvements include;

Within hours;

  • Improvement in mood
  • Feeling more sociable

Within a week

  • Less tired
  • Brain fog lifts
  • Pins and needles in hands and feet start to improve

Within 2 weeks

  • Strength may return to muscles and joints

Within a month

  • Pains in hands and feet improve
  • Strength and grip improve
  • Cyclical hormone cycles begin to normalise
  • Thyroid and cortisol hormones normalise.

For more information, please see:


The injection is given into the deltoid muscle at the top of the arm



Single injections:  £30 

Course of 3:  £85

Course of 5:  £130