why would you need a vitamin b12 injection Are Shots Right for You? What Are B12 Injections? And

PMID 33939715

Crashes With Fatalities In serious vehicle crashes involving the death of one or more people in a drunk driving wreck (with other vehicles or with a pedestrian, or a serious boding injury to another person), the existence of reasonable suspicion of one or more drivers being impaired can be the basis of a law enforcement officer utilizing a statutory provision or (more likely) a judicial search warrant to forcibly draw blood and/or collect urine, to determine the BAC level or the drug concentration within a DUI drivers bloodstream

The authors also point out that in some rare genetic disorders of B12 metabolism, the active forms may be required, and that smokers, who tend to have an excess of thiocyanate in their blood, may benefit from a taking a form other than cyano-B12

Phlebotomists go through a lot of training to learn the best way to draw blood, where to draw from, and how to do it so it doesnt hurt much