What would move this position is: a randomised, placebo-controlled trial in a defined population with an objective primary endpoint, a pre-registered protocol, and pharmacovigilance over a clinically meaningful duration
Certain medications, including some medications used to treat gastrointestinal disorders, may make it more difficult for some people to absorb B12 from food sources
Elsevier, Amsterdam, pp 7997 Taylor A, Foo SS, Bruzzone R et al (2015) Fc receptors in antibody-dependent enhancement of viral infections
Cellular protection: Preserves healthy cell function and reduces oxidative damage
Is getting a vitamin B12 booster shot worth it, even if I am not B12 deficient
Shimada, M., Hibino, M