b12 injection loading dose Shots at Home: How, Where & How Often to Inject Yourself B12 Injection Dose: 7 Guidelines

Injections are particularly appropriate for those with: Pernicious anaemia, an autoimmune condition affecting B12 absorption Conditions affecting the stomach or small intestine, such as Crohns disease or coeliac disease Those who have had gastric surgery or bariatric procedures Strict vegans and vegetarians not meeting their B12 needs through food or oral supplements For those who can absorb B12 normally, oral supplements are generally an effective and well-evidenced alternative to injections

This means they need more aggressive treatment

I just dont get why normally I inject B12 and dont feel like this

Depending on the type of injection, its typically administered in the deltoid muscle of your upper arm, much like a flu shot