Injections, on the other hand, provide high bioavailability and typically result in faster improvement of symptoms Injections may be a better choice if: Youve been diagnosed with a B12 deficiency You follow a vegetarian or vegan diet You take medications that impair absorption You want faster, more noticeable results Ideal B12 Injection Dosage & Frequency Theres no one-size-fits-all dosage for B12 injections
Note that the numbers in parentheses (1, 2, etc.) are clickable links to these studies
In animal research, significant reductions in body weight gain were observed over treatment periods of 14-19 days, with sustained effects during chronic administration
B12 injections offer a more direct and reliable solution
However, if you are seeking B12 injections for preventative measures or for increased energy and improved mood, many insurance companies view these as elective or preventative treatments that fall outside of essential health benefits