b12 injections not working chronic fatigue I Feel Tired All the Time. Do I Need a Shot?: Shawn Veiseh, M.D.: Family Medicine Vitamin B12 injections help unexplained

Your body cannot make B12 on its own, so you have to get it through your diet (mainly animal products) or through supplementation

Treatment typically involves vitamin B12 supplementation, either through oral supplements or injections, depending on the severity of the deficiency and underlying causes.

Stay hydrated the day of injection

Here's the general pattern folks tend to experience

IT IS IMPORTANT that you keep all doctor and laboratory appointments while you are using this medicine

Autoimmune diseases such as pernicious anemia also disrupt normal absorption processes, requiring tailored dosing schedules to ensure consistent benefits from B12 shots