Is the bright red color of B12 injections natural? Vitamin B12 injections deliver high doses of this essential vitamin directly into your bloodstream for better absorption than oral supplements to boost energy, support red blood cell production and maintain nerve function. Ever wonder why B12 shots are red? Here's the scoop! B12 injections naturally have a deep red color due to the presence of the cobalt corrin complex, a key component of B12 Shots at Home: How, Where & How Often to Inject Yourself AZ IV Medics Vitamin B12: Administration by Injection or Oral? Tofarmakeiomou.gr