why give b12 injections How to self-inject intramuscular vitamin - Overview Do You Need a Prescription

Vitamin B12 is primarily involved in the production of red blood cells, the maintenance of a healthy nervous system, including brain function, and releasing energy from food

While B12 injections are generally considered safe, its important to be aware of potential side effects, which are typically mild and may include: Mild pain or redness at the injection site Temporary itching or rash Diarrhea or upset stomach Headache These side effects are usually short-lived and resolve on their own

The treatment may support health benefits, including improved liver function, enhanced metabolism, and potential support for cardiovascular health [6]

The NHS notes pain and itching at the injection site as common and self-limiting