allergy to b12 injections Shots Side Effects And How Treat Them Cobalt Allergy and Vitamin B12

No study has compared injecting near an injury against injecting elsewhere for these compounds "inject near the injury" is a reasonable, low-cost default, but it is practitioner convention, not an evidence-backed advantage

Injections containing B12 deliver a concentrated dose of this vital nutrient, helping to combat fatigue, improve focus, and boost energy levels, while the lipotropic compounds of amino acids promote fat metabolism and help lower cholesterol

Pernicious anaemia: self-administration of hydroxocobalamin in the covid-19 crisis BMJ 2020;369:m2380

Self-administration without guidance increases risk significantly