are there any side effects from vitamin b12 injections Shots: B12 Benefits, Uses, Risks Vitamin B12: Overdose and Side
Description
Ill stick with them for the long-haul
B12 is not a stimulant like caffeine, so it cant suddenly cause you to feel like you have more energy
10.2337/dc08-s246 40 GuanX.-X.ZhuX.-J.DengZ.-H.ZengY.-R.LiuJ.-R.LiJ.-H.et al (2021)
For others, it might take a few weeks, depending on how severe the deficiency was, to begin with
