doi: 10.3389/fphar.2025.1602976 Received 30 March 2025 Revised 13 November 2025 Accepted 14 November 2025 Published 19 December 2025 Volume 16 - 2025 Edited by Bernd Rosenkranz, Fundisa African Academy of Medicines Development, South Africa Reviewed by Kacper Nijakowski, Poznan University of Medical Sciences, Poland Miriam Njoki Karinja, Science for Africa Foundation, Kenya Updates Copyright 2025 Mazur, Ndokaj, Salerno, Vallone, Ardan, Bietolini, Carrouel, Wilk, Sarig, Ottolenghi and Bourgeois
No evidence of harm is not the same as evidence of no harm. It just means nobody has looked
Although vitamin B 12 deficiency is known to damage the myelin sheath covering cranial, spinal, and peripheral nerves, the biochemical processes leading to neurologic damage in vitamin B 12 deficiency are not yet fully understood (22)
That option is expensive in the long term
Can taking too much B12 kill you
For example, drinking alcohol in excess makes your liver work harder and less efficiently, which can undermind the amino acids present in this injection and make it more difficult for you to see any benefits from treatment
