Vitamin B12 Injection: Energy Boost and Anemia Treatment Mountainside Medical 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 Do you know why vitamin B12 is red? Vitamin B12 (Methylcobalamin) is red in color because it contains cobalt (Co), a rare biochemical element, at the center of a porphyrin ring Everywhere you turn nowadays, people are harping on about B12 injections. It's obvious why, though: they are especially good in the autumn winter months when many of us look and feel a bit