B12 Injections East Valley Urology Center of Arizona Vitamin B12 Injections in Wheaton, IL Jade Aesthetics Fun Fact Friday! Ever wondered Why is my B12 injection red? All B12s are cobalamins they have a cobalt atom at the center of a special ring shaped molecule called How to self inject intramuscular vitamin B12 Overview Guy's and St Thomas' NHS Foundation Trust Vitamin B12 Injection in Luton Boost Energy & Wellbeing Biscot Pharmacy 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 its molecular structure.