Always work with a healthcare provider to tailor the treatment to your specific needs
In these cases, B12 injections provide a direct source of the vitamin, circumventing the digestive system and aiding in absorption
Still, any time you put a needle in your arm or glute (common injection sites), theres a risk of some swelling at the site
Research community sources commonly describe rotating injection sites (abdomen, outer thigh, back of upper arm) to lower the chance of local irritation
But you can get it from fortified plant milks, breakfast cereals, and other foods (check the labels to make sure B12 is included)
Before injecting yourself with vitamin B12, it is important to seek guidance from your provider