Your healthcare provider will give this as an intramuscular (IM) injection of vitamin B12. Once levels have returned to normal, additional oral supplementation can be added for a maintenance regimen.

If symptoms do not begin to clear after 5 minutes, give a second injection if one is available. If you notice any adverse effects after you start taking vitamin B12 supplements, you should ...

Learn how to spot vitamin B12 deficiency symptoms early and find the best ways to incorporate it into your daily routine. Sean Jackson is a creative copywriter living in Florida. He's had work ...

Vitamin B12 Levels Association with Functional and Structural Biomarkers of Central Nervous System Injury in Older Adults. Annals of Neurology , 2025; DOI: 10.1002/ana.27200 Cite This Page : ...