Ever wondered about the vibrant colors in our IV bags? The red (or pink) hue comes from Vitamin B12 but it fades when we add the vitamin B Complex. Some Red or Pink Urine With B12 Injections YouTube Hydroxocobalamin acetate ampoules, vitamin B12a. Red coloured solution for injection in the treatment for vitamin B12 deficiency. Accord Healthcare Stock Photo Alamy Cyanocobalamin (B12) Injection 1000 mcg mL, Multiple Dose Vial 30 mL McGuff B12 Vitamin Injection: Over 543 Royalty Free Licensable Stock Photos Shutterstock 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