Choosing the Right Needle and Syringe for B12 Injections: A Complete Guide Do you follow a vegetarian diet? Did you know that vitamin b12 is mainly present in animal based products so those following a strict plant based are more likely to be deficient in vitamin Cynaofar B12 injection 50 ml buy online in Pakistan Dr. prescribed B12 injections. Pharmacy only gave me vials. Where do you get your needles and syringes? What size?? Where do I inject? : r B12_Deficiency