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 NEW TREATMENT ALERT A vitamin B12 injection helps treat or prevent deficiency by delivering the vitamin directly into the bloodstream. It's often used for people with absorption issues and is usually safe B12 vitamin injection hi res stock photography and images Alamy Vitamin B12 Injection at BiosenseClinic.com a Licensed Pharmacy Vitamin B12 Injections Vie Aesthetics