vitamin b12 injections vs oral vs. B12 Injections: What Is the Difference? Efficacy of different routes of
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Retrieved 7 February 2012

Vegetarian and vegan diets Since B-12 is only found naturally in animal foods, it is important for people on these diets to supplement their diets with B-12

Why following advice about what not to do after a B12 injection matters The short rules clinicians give you are practical and based on common sense about how the body heals

This size is suitable for injecting into the fatty tissue just below the skin

doi: 10.1016/j.ghir.2009.04.015
