side effects vitamin b12 injections B-12 Benefits | Uses | Why Do I Feel Worse

It is not a standalone weight loss treatment and is not FDA-approved to diagnose, treat, cure, or prevent any disease

Together with B-vitamin fortified food (e.g., cereal, nutritional yeast) and supplements, these foods might contribute, though modestly, to prevent vitamin B 12 deficiency in individuals consuming vegetarian diets

But, it needs close medical watch because of the risk of bad reactions

Shift gradually if crossing more than six time zones: move dosing time forward or backward by two hours per day until you reach the new local morning window

However, there are a few rare cases where this treatment is not recommended

(PubMed) Mischoulon D, Fava M