can b12 injections be harmful Vitamin Injections: What You Need To Know Why Do You Need B12

This could be because they huffed a lot at the time, or they might have other health conditions (like anemia) or a pre-existing vitamin B12 deficiency

Factors Influencing the Effectiveness of Vitamin B12 Shots Several factors can influence how quickly and effectively a Vitamin B12 shot works: Severity of Deficiency : Individuals with severe Vitamin B12 deficiency may experience a more noticeable and rapid improvement in symptoms compared to those with mild deficiency

A 2020 review cites studies that indicate extravasation occurs in Injection site reactions may get better within a few days

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