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 Optimizing Diabetes Care: Choosing the Right Insulin Syringe B12 Injection sites + How to use B12 Shots Safely A Guide to the Best Needles for B12 Injections Precision Labs How to Give an Insulin Injection What You Need to Know Luer Lock Syringes 3 mL without Needle 5 16 inch, 0.3 mL Ultra Fine, 1 Mountainside Medical