National Academies Press (US).
My Botox injector, Emily, is professional, informative, and experienced
Nevertheless, once you have learned and practiced administering vitamin B12 injections, it will be easy to do it regularly at home
As such, a person with B12 deficiency may have difficulty walking and balancing (2)
It is also worth seeking advice if you follow a vegan or vegetarian diet, take medications that may affect B12 absorption, or have a digestive condition that may increase your risk of deficiency
Only then you will be able to feel a world of a difference in your energy and mental function