What to Expect from a B12 Shot To recap, heres what you need to know: How long does a B12 shot last
Even so, the frequency and significance of these observations are presently unclear
2009;60(Suppl 7):1916
No serious adverse events, hospitalization, organ damage, or deaths have been documented in over 100 preclinical studies, even at doses 1,000 times higher than typical therapeutic use
Chest pain Fainting Trouble breathing Dizziness or lightheadedness If you experience these issues, visit your doctor to determine the underlying cause and get the right treatment for your condition
Injection-site and systemic risks : Improper reconstitution or non-sterile technique can introduce bacteria or particulates into the solution, leading to localised infections, abscesses, or, in severe cases, systemic sepsis