Is this the right size needle for im injections? : r B12_Deficiency 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 B12 Injection Kit: Syringes & Needles & Alcohol Wipes Medbasic Self injecting vitamin B12. Quick and painless jabs after a B12 by Dr Caroline Palmer Medium Spinal Needle Size: Choosing the Right One for Your Needs