B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics Vitamin B12 Injections AdvancedMD Aesthetics Red urinary discolouration following hydroxocobalamin treatment for vasoplegic syndrome Canadian Journal of Anesthesia Journal canadien d'anesthsie Springer Nature Link Is a Vitamin B12 Injection ACTUALLY Worth It? Urine color is not random. It's one of the simplest ways the body signals what's going on beneath the surface. Image Credits : Dr Berg