B12 vitamin Store Needle and Syringe Information for injecting vitamin B12 and vitamin C. Find out what needle sizes are recommended. B12 Injection Dosage and Frequency: 7 Essential Guidelines for Adults Liv Hospital Choosing the Right Needle and Syringe for B12 Injections: A Complete Guide Choosing the Right Needle and Syringe for B12 Injections: A Complete Guide Treating Severe Vitamin B12 Deficiency B12 IM Injection 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