(PubMed) Egnell M, Fassier P, Lecuyer L, et al
Subcutaneous injections go into your fat, often in the belly, thigh or upper arm
But given that some multivitamins dont contain enough B12 to meet our minimum recommendations, Im sympathetic to the idea that it could be dangerous for vegan health professionals, and the greater vegan community, to promote the idea that for B12 vegans can just take a multivitamin. After the discussion with my colleague and reviewing the research, I see a need for vegan advocates to emphasize that when relying on daily multivitamins as a sole source of B12 vegans need to make sure it meets our minimum recommendations
Benzyl alcohol, while a robust preservative, is not invincible
Dose-response relationships appear to be tissue-specific, with adipose tissue showing high sensitivity while other tissues may require higher concentrations for detectable effects
Results vary by individual based on goals, lifestyle, and medical conditions