Who should get the injection?
If you do not already receive the B12 injection, you must be tested for a deficiency before we can treat you. This is to make sure that you are suitable for the injection.
The Vitamin B12 injection is an effective way to treat a deficiency. There is only one type of vitamin B12 injection available in the UK, known as hydroxocobalamin. Vitamin B12 tablets, also known as cyanocobalamin, can be bought over the counter from pharmacies or health stores, but are not as effective as the injection.
What is Vitamin B12 deficiency?
Vitamin B12 is a nutrient needed to keep your body fit and healthy. Your body doesn’t make it, it absorbs the vitamin from food – particularly meat, fish, eggs and dairy. Some people have conditions such as pernicious anaemia which stop them from getting as much as they need, other people, particularly those following a vegan diet, don’t get enough of the vitamin from their food. Symptoms of deficiency can vary from person to person, but can include extreme tiredness and lack of energy, breathlessness and feeling faint, headaches, pale skin, heart palpitations and sometimes a loss of appetite and weight loss.
If you do not already receive the B12 injection, you must be tested for a deficiency before we can treat you. This is to make sure that you are suitable for the injection.
The injection can be given every 6 months if due to a dietary deficiency, or 2-3 months if the cause of your low B12 levels is pernicious anaemia. There is no need to be re-tested.
The B12 injection is generally very safe. However, some people may experience some pain, swelling or redness at the injection site, and in much rarer cases headaches, itching or nausea. If any of these symptoms persist or worsen please contact your GP or 111.